First determine the subnet addresses of each link and then write the static routes. Remember that the routers will already have entries in their route tables for any directly connected subnet. The static routes are as follows: RTA: ip route 192.168.2.64 255.255.255.224 192.168.2.131 ip route 192.168.2.160 255.255.255.224 192.168.2.131 ip route 192.168.1.128 255.255.255.240 192.168.2.131 ip route 192.168.1.16 255.255.255.240 192.168.2.131 ip route 192.168.2.32 255.255.255.224 192.168.2.131 ip route 192.168.1.160 255.255.255.240 192.168.2.131 ip route 10.1.1.0 255.255.255.0 192.168.2.131 ip route 10.1.3.0 255.255.255.0 192.168.2.131 ip route 10.1.2.0 255.255.255.0 192.168.2.131 RTB: ip route 10.1.4.0 255.255.255.0 192.168.2.132 ip route 192.168.1.128 255.255.255.240 192.168.2.174 ip route 192.168.1.16 255.255.255.240 192.168.2.174 ip route 192.168.2.32 255.255.255.224 192.168.2.174 ip route 192.168.1.160 255.255.255.240 192.168.2.174 ip route 10.1.1.0 255.255.255.0 192.168.2.174 ip route 10.1.3.0 255.255.255.0 192.168.2.174 ip route 10.1.2.0 255.255.255.0 192.168.2.174 RTC: ip route 10.1.4.0 255.255.255.0 192.168.2.185 ip route 192.168.2.128 255.255.255.224 192.168.2.185 ip route 192.168.2.64 255.255.255.224 192.168.2.185 ip route 192.168.2.32 255.255.255.224 192.168.1.20 ip route 10.1.1.0 255.255.255.0 192.168.1.173 ip route 10.1.3.0 255.255.255.0 192.168.1.173 ip route 10.1.2.0 255.255.255.0 192.168.1.173 RTD: ip route 10.1.4.0 255.255.255.0 192.168.1.29 ip route 192.168.2.128 255.255.255.224 192.168.1.29 ip route 192.168.2.64 255.255.255.224 192.168.1.29 ip route 192.168.2.160 255.255.255.224 192.168.1.29 ip route 192.168.1.128 255.255.255.240 192.168.1.29 ip route 192.168.1.160 255.255.255.240 192.168.1.29 ip route 10.1.1.0 255.255.255.0 192.168.1.29 ip route 10.1.3.0 255.255.255.0 192.168.1.29 ip route 10.1.2.0 255.255.255.0 192.168.1.29 RTE: ip route 10.1.4.0 255.255.255.0 192.168.1.163 ip route 192.168.2.128 255.255.255.224 192.168.1.163 ip route 192.168.2.64 255.255.255.224 192.168.1.163 ip route 192.168.2.160 255.255.255.224 192.168.1.163 ip route 192.168.1.128 255.255.255.240 192.168.1.163 ip route 192.168.1.16 255.255.255.240 192.168.1.163 ip route 192.168.2.32 255.255.255.224 192.168.1.163 ip route 10.1.2.0 255.255.255.0 10.1.3.2 RTF: ip route 10.1.4.0 255.255.255.0 10.1.3.1 ip route 192.168.2.128 255.255.255.224 10.1.3.1 ip route 192.168.2.64 255.255.255.224 10.1.3.1 ip route 192.168.2.160 255.255.255.224 10.1.3.1 ip route 192.168.1.128 255.255.255.240 10.1.3.1 ip route 192.168.1.16 255.255.255.240 10.1.3.1 ip route 192.168.2.32 255.255.255.224 10.1.3.1 ip route 192.168.1.160 255.255.255.240 10.1.3.1 ip route 10.1.1.0 255.255.255.0 10.1.3.1 | |
The static routes are as follows: RTA: ip route 192.168.0.0 255.255.0.0 192.168.2.131 ip route 10.1.0.0 255.255.0.0 192.168.2.131 RTB: ip route 10.1.4.0 255.255.255.0 192.168.2.132 ip route 192.168.0.0 255.255.0.0 192.168.2.174 ip route 10.1.0.0 255.255.0.0 192.168.2.174 RTC: ip route 10.1.4.0 255.255.255.0 192.168.2.185 ip route 192.168.2.32 255.255.255.224 192.168.1.20 ip route 10.1.0.0 255.255.0.0 192.168.1.173 ip route 192.168.2.64 255.255.255.224 192.168.2.185 ip route 192.168.2.128 255.255.255.224 192.168.2.185 RTD: ip route 10.1.0.0 255.255.0.0 192.168.1.29 ip route 192.168.0.0 255.255.05.0 192.168.1.29 RTE ip route 10.1.4.0 255.255.255.0 192.168.1.163 ip route 192.168.0.0 255.255.0.0 192.168.1.163 ip route 10.1.2.0 255.255.255.0 10.1.3.2 RTF: ip route 10.1.0.0 255.255.0.0 10.1.3.1 ip route 192.168.0.0 255.255.0.0 10.1.3.1 | |
The static routes are as follows: RTA: ip route 172.16.7.0 255.255.255.0 172.16.2.2 ip route 172.16.7.0 255.255.255.0 172.16.4.2 50 ip route 172.16.6.0 255.255.255.0 172.16.2.2 ip route 172.16.6.0 255.255.255.0 172.16.4.2 50 ip route 172.16.8.0 255.255.255.0 172.16.4.2 ip route 172.16.8.0 255.255.255.0 172.16.2.2 50 ip route 172.16.5.0 255.255.255.0 172.16.4.2 ip route 172.16.5.0 255.255.255.0 172.16.2.2 50 ip route 172.16.9.0 255.255.255.0 172.16.2.2 ip route 172.16.9.0 255.255.255.0 172.16.4.2 RTB: ip route 172.16.1.0 255.255.255.0 172.16.2.1 ip route 172.16.1.0 255.255.255.0 172.16.6.1 50 ip route 172.16.4.0 255.255.255.0 172.16.2.1 ip route 172.16.4.0 255.255.255.0 172.16.6.1 50 ip route 172.16.9.0 255.255.255.0 172.16.6.1 ip route 172.16.9.0 255.255.255.0 172.16.2.1 50 ip route 172.16.5.0 255.255.255.0 172.16.6.1 ip route 172.16.5.0 255.255.255.0 172.16.2.1 50 ip route 172.16.8.0 255.255.255.0 172.16.6.1 ip route 172.16.8.0 255.255.255.0 172.16.2.1 RTC: ip route 172.16.1.0 255.255.255.0 172.16.6.2 ip route 172.16.1.0 255.255.255.0 172.16.5.1 ip route 172.16.4.0 255.255.255.0 172.16.5.1 ip route 172.16.4.0 255.255.255.0 172.16.6.2 50 ip route 172.16.2.0 255.255.255.0 172.16.6.2 ip route 172.16.2.0 255.255.255.0 172.16.5.1 50 ip route 172.16.7.0 255.255.255.0 172.16.6.2 ip route 172.16.7.0 255.255.255.0 172.16.5.1 50 ip route 172.16.8.0 255.255.255.0 172.16.5.1 ip route 172.16.8.0 255.255.255.0 172.16.6.2 50 RTD: ip route 172.16.1.0 255.255.255.0 172.16.4.1 ip route 172.16.1.0 255.255.255.0 172.16.5.2 50 ip route 172.16.2.0 255.255.255.0 172.16.4.1 ip route 172.16.2.0 255.255.255.0 172.16.5.2 50 ip route 172.16.9.0 255.255.255.0 172.16.5.2 ip route 172.16.9.0 255.255.255.0 172.16.4.1 50 ip route 172.16.6.0 255.255.255.0 172.16.5.2 ip route 172.16.6.0 255.255.255.0 172.16.4.1 50 ip route 172.16.7.0 255.255.255.0 172.16.5.2 ip route 172.16.7.0 255.255.255.0 172.16.4.1 |
In addition to the RIP configurations shown here, a subnet of 192.168.5.0 must be configured between RTE and RTF, using secondary addresses. Otherwise, subnets 192.168.5.192/27 and 192.168.5.96/27 are discontiguous. The RIP configurations are RTA: router rip network 192.168.2.0 RTB: router rip network 192.168.2.0 RTC: router rip network 192.168.2.0 network 192.168.3.0 RTD: interface ethernet 0 ip address 192.168.4.3 255.255.255.0 ip address 192.168.5.3 255.255.255.224 secondary router rip network 192.168.3.0 network 192.168.4.0 RTE: interface ethernet 0 ip address 192.168.4.1 255.255.255.0 ip address 192.168.5.1 255.255.255.224 secondary router rip network 192.168.4.0 network 192.168.5.0 RTF: interface ethernet 0 ip address 192.168.4.2 255.255.255.0 ip address 192.168.5.2 255.255.255.224 secondary router rip network 192.168.4.0 network 192.168.6.0 | |
To unicast RIP updates between RTC and RTD, the configurations are RTC: router rip network 192.168.2.0 neighbor 192.168.3.2 RTD: router rip network 192.168.3.0 neighbor 192.168.3.1 | |
The update time applies to the entire RIP process. If the update time is changed for the serial link, it will also be changed for the router’s other links. That, in turn, means that the timers must be changed on the neighboring routers, which means those neighbors’ neighbors must be changed, and so on. The cascade effect of changing the update timer on a single router means that the timers must be changed on every router in the RIP domain. The command to increase the RIP update period to two minutes, configured on every router, is timers basic 120 360 360 480Because the update timer is changed, the invalid, holddown, and flush timers must also be changed. Setting the invalid and holddown timers to six times the update period, as the default timers are, would make the conversion time of the network extremely high. Therefore, the invalid and holddown timers are set to three times the update period. The flush timer must be longer than the holddown timer, so it is set to 60 seconds longer. | |
Network 192.168.4.0 is two hops from RTA, so adding 14 to the metric will give the route an unreachable metric of 16. Remember that in Configuration Exercise 1 a subnet of 192.168.5.0 had to be configured on the same link as 192.168.4.0 using secondary addresses, so that the subnets of 192.168.5.0 are contiguous. Therefore, 192.168.5.0 is also two hops from RTB. Assuming the interfaces of RTA and RTB connected to RTC are E0 on both routers, the configurations are RTA: router rip offset-list 1 in 14 Ethernet0 network 192.168.2.0 ! access-list 1 permit 192.168.4.0 0.0.0.0 RTB: router rip offset-list 1 in 14 Ethernet0 network 192.168.2.0 ! access-list 1 permit 192.168.5.0 0.0.0.0 | |
RTB, with its longer mask, can interpret all subnets correctly. The problem is at RTA. With a 27-bit mask, RTA interprets RTB’s subnets 192.168.20.40/29 and 192.168.20.49/29 as 192.168.20.32/27—the same subnet as its directly connected link. Therefore, RTA does not have a correct “view” of the network. However, packets can still be routed if Proxy ARP is enabled. For example, suppose RTA has a packet to forward with a destination address of 192.168.20.50. RTA incorrectly interprets this address as a member of its subnet 192.168.20.32/27, and ARPs for the MAC identifier of 192.168.20.50 on that subnet. RTB hears the ARP; it correctly interprets 192.168.20.50 as being a member of its subnet 192.168.20.48/29 and responds with the MAC identifier of its interface on 192.168.20.32/29. RTA then forwards the packet to RTB, and RTB forwards the packet to the correct destination. If Proxy ARP is disabled, packets will not be delivered correctly from RTA to RTB. |
The statement neighbor 172.25.150.206 can be added to Taos’s RIP configuration, causing Taos to unicast RIP updates to that address. This approach works only if Pojoaque’s RIPv1 process complies with the rule that the unused fields of RIP messages with version numbers higher than 1 will be ignored and the rest of the packet processed. | |||||||||||||||||||||||||||||||||||||||||||||
Begin by calculating the subnets with the highest number of hosts. From the unused subnet bits, calculate the subnet(s) with the next-highest number of hosts, and so on. Remember that as a group of bits are used for a subnet, no subsequent subnet can begin with that same bit combination. For example, if the first subnet begins with 00, all subsequent subnets must begin with 01, 10, or 11. If the second subnet begins with 010, no subsequent subnet can begin with 010. One solution (with the subnet bits shaded) is
| |||||||||||||||||||||||||||||||||||||||||||||
RTA, RTB, and RTD have the statement version 2 in their RIP configurations. Additionally, the RIP configurations of RTA and RTB include the statement no auto-summary. The interfaces of RTA and RTB connected to subnet 192.168.2.64/28 have the statements ip rip send version 1 2 and ip rip receive version 1 2. The interface of RTD connected to subnet 192.168.2.128/28 has the statements ip rip send version 1 and ip rip receive version 1. | |||||||||||||||||||||||||||||||||||||||||||||
The following solution uses a key chain name of CCIE and a key string named exercise4 on RTB and RTD. Assuming both routers’ interfaces are S0, the configuration of both RTB and RTD is key chain CCIE key 1 key-string exercise4 ! interface Serial0 ip address 192.168.1.15X 255.255.255.252 ip rip authentication mode md5 ip rip authentication key-chain CCIE | |||||||||||||||||||||||||||||||||||||||||||||
The configuration here assumes that the authentication key in Configuration Exercise 4 was enabled on October 31, 2004, at midnight. The second key string used here is exercise5a, and the third key string is exercise5b: key chain CCIE key 1 key-string exercise4 accept-lifetime 00:00:00 Oct 31 2004 00:00:00 Nov 3 2004 send-lifetime 00:00:00 Oct 31 2004 00:30:00 Nov 3 2004 key 2 key-string exercise5a accept-lifetime 00:00:00 Nov 3 2004 duration 36000 send-lifetime 00:00:00 Nov 3 2004 duration 36000 key 3 key-string exercise5b accept-lifetime 10:00:00 Nov 3 2004 infinite send-lifetime 10:00:00 Nov 3 2004 infinite ! interface Serial0 ip address 192.168.1.15X 255.255.255.252 ip rip authentication mode md5 ip rip authentication key-chain CCIE | |||||||||||||||||||||||||||||||||||||||||||||
Globally configure ipv6 unicast-routing. Configure the IPv6 addresses on the LAN ports. 2001:DB8:0:2::/64 is configured on the LAN shared between RTA and RTB. Configure a RIPng routing process on all IPv6 addressed interfaces. |
The EIGRP configurations are RTA: router eigrp 5 network 172.16.0.0 network 172.18.0.0 RTB: router eigrp 5 network 172.16.0.0 RTC: router eigrp 5 network 172.16.0.0 network 172.17.0.0 | |
This solution uses a key chain named CCIE and key strings named exercise2a and exercise2b. Assuming today’s date is November 30, 2004, and the first key begins being used at 8:30 AM, the configurations of the serial interfaces are key chain CCIE key 1 key-string exercise2a accept-lifetime 08:30:00 Dec 2 2004 08:30:00 Jan 1 2005 send-lifetime 08:30:00 Dec 2 2004 08:30:00 Jan 1 2005 key 2 key-string exercise2b accept-lifetime 08:30:00 Jan 1 2005 infinite send-lifetime 08:30:00 Jan 1 2005 infinite ! interface Serial0 ip address 172.16.3.19X 255.255.255.252 ip authentication key-chain eigrp 5 CCIE ip authentication mode eigrp 5 md5 | |
The EIGRP configuration of RTD is router eigrp 5 network 172.16.0.0 network 172.17.0.0 no auto-summary Auto-summarization must also be turned off on RTC. | |
The EIGRP configuration of RTF is router eigrp 5 network 172.16.0.0 network 172.18.0.0 no auto-summary The statement ip summary-address eigrp 5 172.18.10.192 255.255.255.224 is added to RTA’s interface on subnet 172.18.10.96/27. Also, note that auto-summarization must be turned off on RTA, because of the appearance of the 172.16.0.0 network on RTF. | |
RTA can send a summary address of 172.16.3.128/25 to RTF and a summary address of 172.16.3.0/25 to RTB. All other summarization is performed automatically. |
The OSPF configurations are RTA: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 RTB: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.5.0.0 0.0.255.255 area 5 area 5 virtual-link 10.100.100.9 RTC: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.10.0.0 0.0.255.255 area 10 network 10.30.0.0 0.0.255.255 area 30 RTD: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.20.0.0 0.0.255.255 area 20 RTE: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.15.0.0 0.0.255.255 area 15 RTF: router ospf 1 network 10.5.0.0 0.0.255.255 area 5 RTG: router ospf 1 network 10.10.1.58 0.0.0.0 area 10 RTH: router ospf 1 network 10.20.100.100 0.0.0.0 area 20 network 10.20.1.0 0.0.0.255 area 20 RTI: router ospf 1 network 10.5.0.0 0.0.255.255 area 5 network 10.35.0.0 0.0.255.255 area 35 area 5 virtual-link 10.100.100.2 RTJ: router ospf 1 network 10.15.0.0 0.0.255.255 area 15 RTK through RTN have Frame Relay interfaces. The four interfaces to the Frame Relay network are all on the same subnet, so the OSPF network type must be either broadcast or point-to-multipoint: RTK: interface Serial0 encapsulation frame-relay ip address 10.30.254.193 255.255.255.192 ip ospf network point-to-multipoint ! router ospf 1 network 10.30.0.0 0.0.255.255 area 30 RTL: encapsulation frame-relay ip address 10.30.254.194 255.255.255.192 ip ospf network point-to-multipoint ! router ospf 1 network 10.30.0.0 0.0.255.255 area 30 RTM: encapsulation frame-relay ip address 10.30.254.195 255.255.255.192 ip ospf network point-to-multipoint ! router ospf 1 network 10.30.0.0 0.0.255.255 area 30 RTN: encapsulation frame-relay ip address 10.30.254.196 255.255.255.192 ip ospf network point-to-multipoint ! router ospf 1 network 10.30.0.0 0.0.255.255 area 30 | |
The ABR configurations are RTB: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.5.0.0 0.0.255.255 area 5 area 5 virtual-link 10.100.100.9 area 0 range 10.0.0.0 255.255.0.0 area 5 range 10.5.0.0 255.255.0.0 RTC: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.10.0.0 0.0.255.255 area 10 network 10.30.0.0 0.0.255.255 area 30 area 0 range 10.0.0.0 255.255.0.0 area 10 range 10.10.0.0 255.255.0.0 area 30 range 10.30.0.0 255.255.0.0 RTD: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.20.0.0 0.0.255.255 area 20 area 0 range 10.0.0.0 255.255.0.0 area 20 range 10.20.0.0 255.255.0.0 RTE: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.15.0.0 0.0.255.255 area 15 area 0 range 10.0.0.0 255.255.0.0 area 15 range 10.15.0.0 255.255.0.0 RTI: router ospf 1 network 10.5.0.0 0.0.255.255 area 5 network 10.35.0.0 0.0.255.255 area 35 area 5 virtual-link 10.100.100.2 area 0 range 10.0.0.0 255.255.0.0 area 5 range 10.5.0.0 255.255.0.0 area 35 range 10.35.0.0 255.255.0.0 | |
The configurations are RTE: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.15.0.0 0.0.255.255 area 15 area 15 stub RTJ: router ospf 1 network 10.15.0.0 0.0.255.255 area 15 area 15 stub | |
The configurations are RTC: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.10.0.0 0.0.255.255 area 10 network 10.30.0.0 0.0.255.255 area 30 area 0 range 10.0.0.0 255.255.0.0 area 10 range 10.10.0.0 255.255.0.0 area 30 stub no-summary area 30 range 10.30.0.0 255.255.0.0 RTK: router ospf 1 network 10.30.0.0 0.0.255.255 area 30 area 30 stub RTL: router ospf 1 network 10.30.0.0 0.0.255.255 area 30 area 30 stub RTM: router ospf 1 network 10.30.0.0 0.0.255.255 area 30 area 30 stub RTN: router ospf 1 network 10.30.0.0 0.0.255.255 area 30 area 30 stub | |
The configurations are RTD: router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.20.0.0 0.0.255.255 area 20 area 20 nssa RTH: router ospf 1 network 10.20.100.100 0.0.0.0 area 20 area 20 nssa | |
Only one end of a point-to-point circuit needs to be configured as a demand circuit. In this solution, RTC is chosen: interface Serial0 ip address 10.30.255.249 255.255.255.252 ip ospf demand-circuit ! router ospf 1 network 10.0.0.0 0.0.255.255 area 0 network 10.10.0.0 0.0.255.255 area 10 network 10.30.0.0 0.0.255.255 area 30 area 0 range 10.0.0.0 255.255.0.0 area 10 range 10.10.0.0 255.255.0.0 area 30 range 10.30.0.0 255.255.0.0 |
No additional OSPFv3 command is needed to include a second IPv6 prefix that has been configured on an interface in the OSPFv3 process. If OSPFv3 is configured on an interface, and a second IPv6 address is added to the interface, the second address is automatically included in the OSPFv3 process. | |
Yes, two routers can become adjacent if they are configured with different prefixes. No prefix information is included in Hellos, the source address of the Hello packet is the Link-local address. Other IPv6 addresses configured on the interfaces have no bearing on whether two routers become adjacent or not. | |
The basic router configurations are RtrA: ipv6 unicast-routing int e 0/0 ipv6 address 2001:db8:0:4::3/64 ipv6 ospf 1 area 1 int e 0/1 ipv6 address 2001:db8:0:5::1/64 ipv6 ospf 1 area 1 RtrB: ipv6 unicast-routing int e 0/0 ipv6 address 2001:db8:0:4::2/64 ipv6 ospf 1 area 1 int e 0/1 ipv6 address 2001:db8:0:6::1/64 ipv6 ospf 1 area 1 RtrC: ipv6 unicast-routing int e 0/0 ipv6 address 2001:db8:0:4::1/64 ipv6 ospf 1 area 1 int serial 0/0 ipv6 address 2001:db8:0:8::1/64 ipv6 ospf 1 area 0 RtrD: ipv6 unicast-routing int s 0/0 ipv6 address 2001:db8:0:8::2/64 ipv6 ospf 1 area 0 | |
To change area 1 to a totally stubby area and summarize into area 0, new router configurations are RtrA: ipv6 unicast-routing int e 0/0 ipv6 address 2001:db8:0:5::3/64 ipv6 ospf 1 area 1 ipv6 router ospf 1 area 1 stub RtrB: ipv6 unicast-routing int e 0/0 ipv6 address 2001:db8:0:4::2/64 ipv6 ospf 1 area 1 ipv6 router ospf 1 area 1 stub RtrC: ipv6 unicast-routing int e 0/0 ipv6 address 2001:db8:0:4::1/64 ipv6 ospf 1 area 1 int serial 0/0 ipv6 address 2001:db8:0:8::1/64 ipv6 ospf 1 area 0 ipv6 router ospf 1 area 1 stub no-summary area 1 range 2001:db8:0:10::/61 |
This solution uses a System ID of 0000.1234.abcX, where X is a number that makes the router unique within the IS-IS domain. The System ID is six octets, which is required by Cisco IOS. The minimum NET length is eight octets, one of which is the SEL, so the area address is a one-octet number corresponding to the area number shown in Table 10-6. The configurations are RTA: interface Ethernet0 ip address 192.168.1.17 255.255.255.240 ip router isis ! interface Ethernet1 ip address 192.168.1.50 255.255.255.240 ip router isis ! router isis net 00.0000.1234.abc1.00 is-type level-1 RTB: interface Ethernet0 ip address 192.168.1.33 255.255.255.240 ip router isis ! interface Ethernet1 ip address 192.168.1.51 255.255.255.240 ip router isis ! router isis net 00.0000.1234.abc2.00 is-type level-1 RTC: interface Ethernet0 ip address 192.168.1.49 255.255.255.240 ip router isis ! interface Serial0 ip address 192.168.1.133 255.255.255.252 ip router isis ! router isis net 00.0000.1234.abc3.00 RTD: interface Serial0 ip address 192.168.1.134 255.255.255.252 ip router isis ! interface Serial1 ip address 192.168.1.137 255.255.255.252 ip router isis ! router isis net 02.0000.1234.abc4.00 is-type level-2-only RTE: interface Serial0 ip address 192.168.1.142 255.255.255.252 ip router isis ! interface Serial1 ip address 192.168.1.145 255.255.255.252 ip router isis ! interface Serial2 ip address 192.168.1.138 255.255.255.252 ip router isis ! router isis net 02.0000.1234.abc5.00 is-type level-2-only RTF: interface Serial0 ip address 192.168.1.141 255.255.255.252 ip router isis ! interface Serial1 ip address 192.168.1.158 255.255.255.252 ip router isis ! router isis net 02.0000.1234.abc6.00 is-type level-2-only RTG: interface Ethernet0 ip address 192.168.1.111 255.255.255.224 ip router isis ! interface Serial0 ip address 192.168.1.157 255.255.255.252 ip router isis ! router isis net 01.0000.1234.abc7.00 RTH: interface Ethernet0 ip address 192.168.1.73 255.255.255.224 ip router isis ! interface Ethernet1 ip address 192.168.1.97 255.255.255.224 ip router isis ! router isis net 01.0000.1234.abc8.00 is-type level-1 RTI: interface Ethernet0 ip address 192.168.1.225 255.255.255.248 ip router isis ! interface Ethernet1 ip address 192.168.1.221 255.255.255.248 ip router isis ! interface Serial0 ip address 192.168.1.249 255.255.255.252 ip router isis ! interface Serial1 ip address 192.168.1.146 255.255.255.252 ip router isis ! router isis net 03.0000.1234.abc9.00 RTJ: interface Ethernet0 ip address 192.168.1.201 255.255.255.248 ip router isis ! interface Ethernet1 ip address 192.168.1.217 255.255.255.248 ip router isis ! router isis net 03.0000.1234.abca.00 is-type level-1 RTK: interface Ethernet0 ip address 192.168.1.209 255.255.255.248 ip router isis ! interface Serial0 ip address 192.168.1.250 255.255.255.252 ip router isis ! router isis net 03.0000.1234.abcb.00 is-type level-1 | |
The configurations are RTA: ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.17 255.255.255.240 ip router isis ipv6 address 2001:db8:0:10::1/64 ipv6 router isis ! interface Ethernet1 ip address 192.168.1.50 255.255.255.240 ip router isis ipv6 address 2001:db8:0:30::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc1.00 is-type level-1 metric-style wide address-family ipv6 multi-topology RTB: ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.33 255.255.255.240 ip router isis ipv6 address 2001:db8:0:20::1/64 ipv6 router isis ! interface Ethernet1 ip address 192.168.1.51 255.255.255.240 ip router isis ipv6 address 2001:db8:0:30::3/64 ipv6 router isis ! router isis net 00.0000.1234.abc2.00 is-type level-1 metric-style wide address-family ipv6 multi-topology RTC: ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.49 255.255.255.240 ip router isis ipv6 address 2001:db8:0:30::1/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.133 255.255.255.252 ip router isis ipv6 address 2001:db8:0:84::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc3.00 metric-style wide address-family ipv6 multi-topology RTD: ipv6 unicast-routing interface Serial0 ip address 192.168.1.134 255.255.255.252 ip router isis ipv6 address 2001:db8:0:84::2/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.137 255.255.255.252 ip router isis ipv6 address 2001:db8:0:88::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc4.00 is-type level-2-only metric-style wide address-family ipv6 multi-topology RTE: ipv6 unicast-routing interface Serial0 ip address 192.168.1.142 255.255.255.252 ip router isis ipv6 address 2001:db8:0:8c::2/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.145 255.255.255.252 ip router isis ipv6 address 2001:db8:0:90::1/64 ipv6 router isis ! interface Serial2 ip address 192.168.1.138 255.255.255.252 ip router isis ipv6 address 2001:db8:0:88::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc5.00 is-type level-2-only metric-style wide address-family ipv6 multi-topology RTF: ipv6 unicast-routing interface Serial0 ip address 192.168.1.141 255.255.255.252 ip router isis ipv6 address 2001:db8:0:8c::1/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.158 255.255.255.252 ip router isis ipv6 address 2001:db8:0:9c::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc6.00 is-type level-2-only metric-style wide address-family ipv6 multi-topology RTG: ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.111 255.255.255.224 ip router isis ip router clns ipv6 address 2001:db8:0:60::f/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.157 255.255.255.252 ip router isis ipv6 address 2001:db8:0:9c::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc7.00 metric-style wide address-family ipv6 multi-topology RTH: ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.73 255.255.255.224 ip router isis ipv6 address 2001:db8:0:40::9/64 ipv6 router isis ! interface Ethernet1 ip address 192.168.1.97 255.255.255.224 ip router isis ip router clns ipv6 address 2001:db8:0:60::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc8.00 is-type level-1 metric-style wide address-family ipv6 multi-topology RTI: ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.225 255.255.255.248 ip router isis ipv6 address 2001:db8:0:e0::1/64 ipv6 router isis ! interface Ethernet1 ip address 192.168.1.221 255.255.255.248 ip router isis ipv6 address 2001:db8:0:d8::5/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.249 255.255.255.252 ip router isis ipv6 address 2001:db8:0:f8::1/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.146 255.255.255.252 ip router isis ipv6 address 2001:db8:0:90::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc9.00 metric-style wide address-family ipv6 multi-topology RTJ: ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.201 255.255.255.248 ip router isis ipv6 address 2001:db8:0:c8::1/64 ipv6 router isis ! interface Ethernet1 ip address 192.168.1.217 255.255.255.248 ip router isis ipv6 address 2001:db8:0:d8::1/64 ipv6 router isis ! router isis net 00.0000.1234.abca.00 is-type level-1 metric-style wide address-family ipv6 multi-topology RTK: ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.209 255.255.255.248 ip router isis ipv6 address 2001:db8:0:d0::1/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.250 255.255.255.252 ip router isis ipv6 address 2001:db8:0:f8::2/64 ipv6 router isis ! router isis net 00.0000.1234.abcb.00 is-type level-1 metric-style wide address-family ipv6 multi-topology | |
The configurations are RTD: Ipv6 unicast-routing Key chain Fair Key 1 Key-string Eiffel interface Serial0 ip address 192.168.1.134 255.255.255.252 ip router isis ipv6 address 2001:db8:0:84::2/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.137 255.255.255.252 ip router isis ipv6 address 2001:db8:0:88::1/64 ipv6 router isis authentication key-chain Fair level-2 authentication mode md5 level-2 ! router isis net 00.0000.1234.abc4.00 is-type level-2-only metric-style wide address-family ipv6 multi-topology RTE: Ipv6 unicast-routing Key chain Fair Key 1 Key-string Eiffel Key chain Paris Key 1 Key-string Tower interface Serial0 ip address 192.168.1.142 255.255.255.252 ip router isis ipv6 address 2001:db7:0:8c::2/64 ipv6 router isis authentication key-chain Paris level-2 authentication mode md5 level-2 ! interface Serial1 ip address 192.168.1.145 255.255.255.252 ip router isis ipv6 address 2001:db8:0:90::1/64 ipv6 router isis ! interface Serial2 ip address 192.168.1.138 255.255.255.252 ip router isis ipv6 address 2001:db8:0:88::2/64 ipv6 router isis authentication key-chain Fair level-2 authentication mode md5 level-2 ! router isis net 00.0000.1234.abc5.00 is-type level-2-only metric-style wide address-family ipv6 multi-topology RTF: Ipv6 unicast-routing Key chain Paris Key 1 Key-string Tower interface Serial0 ip address 192.168.1.141 255.255.255.252 ip router isis ipv6 address 2001:db8:0:8c::1/64 ipv6 router isis authentication key-chain Paris level-2 authentication mode md5 level-2 ! interface Serial1 ip address 192.168.1.158 255.255.255.252 ip router isis ipv6 address 2001:db8:0:9c::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc6.00 is-type level-2-only metric-style wide address-family ipv6 multi-topology | |
The configurations are RTG: Ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.111 255.255.255.224 ip router isis ipv6 address 2001:db8:0:96::f/64 ipv6 router isis ip router clns ! interface Serial0 ip address 192.168.1.157 255.255.255.252 ip router isis ipv6 address 2001:db8:0:9c::1/64 ipv6 router isis! router isis net 00.0000.1234.abc7.00 area-password Scotland metric-style wide address-family ipv6 multi-topology RTH: Ipv6 unicast-routing interface Ethernet0 ip address 192.168.1.73 255.255.255.224 ip router isis ipv6 address 2001:db8:0:40::9/64 ipv6 router isis ! interface Ethernet1 ip address 192.168.1.97 255.255.255.224 ip router isis ip router clns ipv6 address 2001:db8:0:60::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc8.00 is-type level-1 area-password Scotland metric-style wide address-family ipv6 multi-topology | |
The configurations are RTC: Ipv6 unicast-routing Key chain Austria Key 1 Key-string Vienna interface Ethernet0 ip address 192.168.1.49 255.255.255.240 ip router isis ipv6 address 2001:db8:0:30::1/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.133 255.255.255.252 ip router isis ipv6 address 2001:db8:0:84::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc3.00 authentication key-chain Austria level-2 authentication mode text metric-style wide address-family ipv6 multi-topology RTD: Ipv6 unicast-routing Key chain Fair Key 1 Key-string Eiffel Key chain Austria Key 1 Key-string Vienna interface Serial0 ip address 192.168.1.134 255.255.255.252 ip router isis ipv6 address 2001:db8:0:84::2/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.137 255.255.255.252 ip router isis authentication key-chain Fair level-2 authentication mode md5 level-2 ipv6 address 2001:db8:0:88::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc4.00 is-type level-2-only authentication key-chain Austria level-2 authentication mode text metric-style wide address-family ipv6 multi-topology RTE: Ipv6 unicast-routing Key chain Fair Key 1 Key-string Eiffel Key chain Paris Key 1 Key-string Tower Key chain Austria Key 1 Key-string Vienna interface Serial0 ip address 192.168.1.142 255.255.255.252 ip router isis authentication key-chain Paris level-2 authentication mode md5 level-2 ipv6 address 2001:db8:0:8c::2 ipv6 routing isis ! interface Serial1 ip address 192.168.1.145 255.255.255.252 ip router isis ipv6 address 2001:db8:0:90::1/64 ipv6 router isis ! interface Serial2 ip address 192.168.1.138 255.255.255.252 ip router isis authentication key-chain Fair level-2 authentication mode md5 level-2 ipv6 address 2001:db8:0:88::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc5.00 is-type level-2-only authentication key-chain Austria level-2 authentication mode text metric-style wide address-family ipv6 multi-topology RTF: Ipv6 unicast-routing Key chain Paris Key 1 Key-string Tower Key chain Austria Key 1 Key-string Vienna interface Serial0 ip address 192.168.1.141 255.255.255.252 ip router isis authentication key-chain Paris level-2 authentication mode md5 level-2 ipv6 address 2001:db8:0:8c::1/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.158 255.255.255.252 ip router isis ipv6 address 2001:db8:0:9c::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc6.00 is-type level-2-only authentication key-chain Austria level-2 authentication mode text metric-style wide address-family ipv6 multi-topology RTG: Ipv6 unicast-routing Key chain Austria Key 1 Key-string Vienna interface Ethernet0 ip address 192.168.1.111 255.255.255.224 ip router isis ip router clns ipv6 address 2001:db8:0:96::f/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.157 255.255.255.252 ip router isis ipv6 address 2001:db8:0:9c::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc7.00 area-password Scotland authentication key-chain Austria level-2 authentication mode text metric-style wide address-family ipv6 multi-topology RTI: Ipv6 unicast-routing Key chain Austria Key 1 Key-string Vienna interface Ethernet0 ip address 192.168.1.225 255.255.255.248 ip router isis ipv6 address 2001:db8:0:e0::1/64 ipv6 router isis ! interface Ethernet1 ip address 192.168.1.221 255.255.255.248 ip router isis ipv6 address 2001:db8:0:d8::5/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.249 255.255.255.252 ip router isis ipv6 address 2001:db8:0:f8::1/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.146 255.255.255.252 ip router isis ipv6 address 2001:db8:0:90::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc9.00 authentication key-chain Austria level-2 authentication mode text metric-style wide address-family ipv6 multi-topology | |
The configurations are RTC: Ipv6 unicast-routing Key chain Austria Key 1 Key-string Vienna interface Ethernet0 ip address 192.168.1.49 255.255.255.240 ip router isis ipv6 address 2001:db8:0:30::1/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.133 255.255.255.252 ip router isis ipv6 address 2001:db8:0:84::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc3.00 summary-address 192.168.1.0 255.255.255.192 authentication key-chain Austria level-2 authentication mode text metric-style wide address-family ipv6 multi-topology summary-prefix 2001:db8::/58 RTG: Ipv6 unicast-routing Key chain Austria Key 1 Key-string Vienna interface Ethernet0 ip address 192.168.1.111 255.255.255.224 ip router isis ip router clns ipv6 address 2001:db8:0:96::f/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.157 255.255.255.252 ip router isis ipv6 address 2001:db8:0:9c::1/64 ipv6 router isis ! router isis net 00.0000.1234.abc7.00 area-password Scotland authentication key-chain Austria level-2 authentication mode text metric-style wide summary-address 192.168.1.64 255.255.255.192 address-family ipv6 multi-topology summary-prefix 2001:db8:0:40::/58 RTI: Ipv6 unicast-routing Key chain Austria Key 1 Key-string Vienna interface Ethernet0 ip address 192.168.1.225 255.255.255.248 ip router isis ipv6 address 2001:db8:0:e0::1/64 ipv6 router isis ! interface Ethernet1 ip address 192.168.1.221 255.255.255.248 ip router isis ipv6 address 2001:db8:0:d8::5/64 ipv6 router isis ! interface Serial0 ip address 192.168.1.249 255.255.255.252 ip router isis ipv6 address 2001:db8:0:f8::1/64 ipv6 router isis ! interface Serial1 ip address 192.168.1.146 255.255.255.252 ip router isis ipv6 address 2001:db8:0:90::2/64 ipv6 router isis ! router isis net 00.0000.1234.abc9.00 authentication key-chain Austria level-2 authentication mode text metric-style wide summary-address 192.168.1.192 255.255.255.192 address-family ipv6 multi-topology summary-prefix 2001:db8:0:c0::/58 |
RIP does not advertise subnet 172.16.1.144/28. To remedy this problem, a static route is entered to that subnet but with a 27-bit mask. Because the mask references RTB’s E0 interface, it is redistributed into RIP automatically. interface Ethernet0 ip address 172.16.1.146 255.255.255.240 ipv6 address 2001:db8:0:190::2/64 ipv6 ospf 1 area 0 ! interface Ethernet1 ip address 172.16.1.98 255.255.255.224 ipv6 address 2001:db8:0:160::2/64 ipv6 rip ripdomain enable ! router ospf 1 redistribute rip metric 50 subnets network 172.16.1.0 0.0.0.255 area 0 ! router rip redistribute ospf 1 metric 2 passive-interface Ethernet0 network 172.16.0.0 ! ipv6 router rip ripdomain redistribute ospf 1 metric 2 ipv6 router ospf redistribute rip ripdomain metric 50 ip classless ip route 172.16.1.128 255.255.255.224 Ethernet0 | |
RTB’s configuration is ipv6 router rip ripdomain redistribute ospf 1 metric 2 ipv6 router ospf redistribute rip ripdomain metric 50 summary-prefix 2001:db8:0:200::/48 | |
RTB’s configuration is interface Ethernet0 ip address 172.16.1.146 255.255.255.240 ip router isis ipv6 address 2001:db8:0:190::2/64 ipv6 router isis ! interface Ethernet1 ip address 172.16.1.98 255.255.255.224 ip summary-address eigrp 1 172.16.1.128 255.255.255.128 ipv6 address 2001:db8:0:160::2/64 ipv6 rip ripdomain enable ! router eigrp 1 redistribute isis level-1 metric 10000 1000 255 1 1500 passive-interface Ethernet0 network 172.16.0.0 ! router isis net 00.0000.1234.abc1.00 summary-address 172.16.2.0 255.255.255.0 redistribute eigrp 1 metric 20 metric-type external level-1 address-family ipv6 summary-prefix 2001:db8:0:200::/48 redistribute rip metric 20 metric-type external level-1 ! ipv6 router rip ripdomain redistribute isis metric 5 |
RTA’s configuration is router rip redistribute eigrp 1 metric 3 passive-interface Ethernet0 passive-interface Ethernet1 network 172.16.0.0 distribute-list 1 in Ethernet3 ! router eigrp 1 redistribute rip metric 10000 1000 255 1 1500 passive-interface Ethernet2 passive-interface Ethernet3 network 172.16.0.0! access-list 1 deny 172.16.12.0 access-list 1 permit any | |
RTA’s configuration is router rip redistribute eigrp 1 metric 3 passive-interface Ethernet0 passive-interface Ethernet1 network 172.16.0.0 distribute-list 2 out Ethernet2 ! router eigrp 1 redistribute rip metric 10000 1000 255 1 1500 passive-interface Ethernet2 passive-interface Ethernet3 network 172.16.0.0 ! access-list 2 deny 172.16.10.0 access-list 2 permit any | |
RTA’s configuration is router rip redistribute eigrp 1 metric 3 passive-interface Ethernet0 passive-interface Ethernet1 network 172.16.0.0 distribute-list 3 out eigrp 1 ! router eigrp 1 redistribute rip metric 10000 1000 255 1 1500 passive-interface Ethernet2 passive-interface Ethernet3 network 172.16.0.0 ! access-list 3 permit 172.16.2.0 access-list 3 permit 172.16.8.0 access-list 3 permit 172.16.9.0 | |
RTA’s configuration is router rip redistribute eigrp 1 metric 3 passive-interface Ethernet0 passive-interface Ethernet1 network 172.16.0.0 ! router eigrp 1 redistribute rip metric 10000 1000 255 1 1500 passive-interface Ethernet2 passive-interface Ethernet3 network 172.16.0.0 distribute-list 4 out Ethernet0 ! access-list 4 permit 172.16.1.0 access-list 4 permit 172.16.2.0 access-list 4 permit 172.16.3.0 access-list 4 permit 172.16.7.0 access-list 4 permit 172.16.8.0 access-list 4 permit 172.16.9.0 | |
The distribute list configured under the RIPng process is ipv6 router rip ripname distribute-list prefix-list listname out ethernet2 ! ipv6 prefix-list listname seq 5 deny 2001:DB8:0:A::/63 le 64 ipv6 prefix-list listname seq 10 permit ::/0 le 128 | |
EIGRP assigns a higher distance (170) to external routes than to internal routes (90). If any destination within the EIGRP domain is advertised into EIGRP from IS-IS, it will be ignored unless the internal route to the destination fails. Therefore, the EIGRP distances do not have to be manipulated. The distance statements under the IS-IS configurations of RTC and RTD follow: RTC: distance 115 distance 170 192.168.10.254 0.0.0.0 1 ! access-list 1 permit any RTD: distance 115 distance 170 192.168.10.249 0.0.0.0 1 distance 170 192.168.10.241 0.0.0.0 1 ! access-list 1 permit any | |
The distance statement under the IS-IS configuration of RTD is distance 115 distance 255 192.168.10.241 0.0.0.0 1 ! access-list 1 permit any | |
The distance statement under RTC’s EIGRP configuration is distance eigrp 90 90 |
RTA’s configuration is interface Serial0 ip address 172.16.14.6 255.255.255.252 ip policy route-map Exercise1 ! interface Serial1 ip address 172.16.14.10 255.255.255.252 ip policy route-map Exercise1 ! access-list 1 permit 172.16.1.0 0.0.0.127 access-list 2 permit 172.16.1.128 0.0.0.127 ! route-map Exercise1 permit 10 match ip address 1 set ip next-hop 172.16.14.17 ! route-map Exercise1 permit 20 match ip address 2 set ip next-hop 172.16.14.13 | |
RTA’s configuration is interface Serial0 ip address 172.16.14.6 255.255.255.252 ip policy route-map Exercise2A ! interface Serial1 ip address 172.16.14.10 255.255.255.252 ip policy route-map Exercise2B ! access-list 1 permit 172.16.1.64 0.0.0.63 ! route-map Exercise2 permit 10 match ip address 1 set ip next-hop 172.16.14.13 ! route-map Exercise2B permit 10 match ip address 1 set ip next-hop 172.16.14.17 | |
RTA’s configuration is interface Serial2 ip address 172.16.14.18 255.255.255.252 ip access-group 101 in ip policy route-map Exercise3 ! interface Serial3 ip address 172.16.14.14 255.255.255.252 ip access-group 101 in ip policy route-map Exercise3 ! access-list 101 permit udp any 172.168.1.0 0.0.0.255 access-list 101 permit tcp any eq smtp 172.16.1.0 0.0.0.255 access-list 102 permit tcp any eq smtp 172.16.1.0 0.0.0.255 access-list 103 permit udp any 172.168.1.0 0.0.0.255 ! route-map Exercise3 permit 10 match ip address 102 set ip next-hop 172.16.14.9 ! route-map Exercise3 permit 20 match ip address 103 set ip next-hop 172.16.14.5 | |
The OSPF configuration is router ospf 1 redistribute eigrp 1 route-map Exercise4 network 192.168.1.0 0.0.0.255 area 16 ! access-list 1 permit 10.201.100.0 ! route-map Exercise4 deny 10 match ip address 1 ! route-map Exercise4 permit 20 match route-type internal set metric 10 set metric-type type-1 ! route-map Exercise4 permit 30 match route-type external set metric 50 set metric-type type-2 | |
The EIGRP configuration is router eigrp 1 redistribute ospf 1 route-map Exercise5 network 192.168.100.0 ! access-list 1 permit 192.168.1.0 access-list 1 permit 192.168.2.0 access-list 1 permit 192.168.3.0 ! route-map Exercise5 permit 10 match ip address 1 match route-type internal set metric 10000 100 255 1 1500 ! route-map Exercise5 permit 30 match ip address 1 match route-type external set metric 10000 10000 255 1 1500 |