God

CCNP ROUTE Session 2

How to see routing table?

Router>show ip route

Router>show ip route 172.25.100.15

Router>show ip route connected

Router>show ip route static

Router>show ip route summary

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Static Route Tip & Trick

Router(config)#ip route 10.35.15.5 255.255.255.255 Ethernet0

Router(config)#ip route 172.16.0.0 255.255.0.0 10.35.6.1 2

Router(config)#ip route 10.35.15.5 255.255.255.255 Ethernet0 permanent

Router(config)#ip route 172.16.0.0 255.255.0.0 10.35.6.1 2 tag 36291

Router(config)#ip route 172.16.3.0 255.255.255.0 10.35.6.1 2

Router(config)#ip route 172.16.3.0 255.255.255.0 10.35.7.3 5 (Floating Static Routes)

Router(config)#ip route static adjust-time 30 ( By default every 60 seconds-- 12.3(10) )

Router(config)#ip route 0.0.0.0 0.0.0.0 Dialer1 190

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Policy-Based Routing(PBR)

Example 1) How to use different network links depending on the source address?

Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#access-list 1 permit 10.15.35.0 0.0.0.255 Router(config)#access-list 2 permit 10.15.36.0 0.0.0.255 Router(config)#interface Ethernet0 Router(config-if)#ip address 10.15.22.7 255.255.255.0 Router(config-if)#ip policy route-map Engineers Router(config-if)#ip route-cache policy Router(config-if)#exit Router(config)#route-map Engineers permit 10 Router(config-route-map)#match ip address 1 Router(config-route-map)#set ip next-hop 10.15.27.1 Router(config-route-map)#exit Router(config)#route-map Engineers permit 20 Router(config-route-map)#match ip address 2 Router(config-route-map)#set interface Ethernet1 Router(config-route-map)#end Router#

Note:

Router(config-route-map)#set interface Ethernet1 Ethernet2

Router(config-route-map)#set default interface Null0

Example 2) How to force different applications to use different network links?

Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#access-list 101 deny tcp 10.15.25.0 0.0.0.255 any eq www Router(config)#access-list 101 permit tcp any any eq www Router(config)#interface Ethernet0 Router(config-if)#ip address 10.15.22.7 255.255.255.0 Router(config-if)#ip policy route-map Websurfers Router(config-if)#ip route-cache policy Router(config-if)#exit Router(config)#route-map Websurfers permit 10 Router(config-route-map)#match ip address 101 Router(config-route-map)#set ip next-hop 10.15.27.1 Router(config-route-map)#exit Router(config)#route-map Websurfers permit 20 Router(config-route-map)#set ip default next-hop 10.15.26.1 Router(config-route-map)#end

Router#

Example 2) How to use IP TOS field?

Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#access-list 102 permit ip any any tos 4 Router(config)#interface Serial0 Router(config-if)#ip address 10.15.23.6 255.255.255.252 Router(config-if)#ip policy route-map High-priority Router(config-if)#ip route-cache policy Router(config-if)#exit Router(config)#route-map High-priority permit 10 Router(config-route-map)#match ip address 102 Router(config-route-map)#set ip next-hop 10.15.27.1 Router(config-route-map)#end

Router#

How to chek PBR ?

router>show access-list 103

Router>show route-map

Router>show ip policy

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Static Routes That Track Interfaces or Other Routes Example 1) How to create a static route that tracks an interface? Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#track 10 interface Serial0/0 line-protocol Router(config-track)#delay down 5 up 30 Router(config-track)#exit Router(config)#ip route 192.168.10.0 255.255.255.0 10.3.12.26 track 10 Router(config)#end Router#

Not :

In this case, we have opted to wait 5 seconds after the interface goes down, and 30 seconds after it comes back up, before changing the state of the tracking object.

Example 2) how to create a static route that tracks a prefix in the IP routing table? Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#track 11 ip route 10.2.95.0 255.255.255.0 reachability Router(config-track)#delay down 5 up 5 Router(config-track)#exit Router(config)#ip route 0.0.0.0 0.0.0.0 10.3.12.26 track 11 Router(config)#end Router#

Configuring RIP

Example1) How to configure basic RIP functionality? Router2#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router2(config)#interface Ethernet0 Router2(config-if)#ip address 192.168.30.1 255.255.255.0 Router2(config-if)#interface Serial0.1 Router2(config-subif)#ip address 172.25.2.2 255.255.255.0 Router2(config-subif)#exit Router2(config)#router rip Router2(config-router)#network 172.25.0.0 Router2(config-router)#network 192.168.30.0 Router2(config-router)#exit Router2(config)#end Router2#

Example2) How to configure basic RIPv2 functionality? Router2#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router2(config)#router rip Router2(config-router)#version 2 Router2(config-router)#network 172.25.0.0 Router2(config-router)#network 192.168.30.0 Router2(config-router)#end

Router2#

Example3) How to enables plain-text RIP authentication?

Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#key chain ORA Router1(config-keychain)#key 1 Router1(config-keychain-key)#key-string oreilly Router1(config-keychain-key)#exit Router1(config)#interface FastEthernet0/0.1 Router1(config-subif)#ip rip authentication key-chain ORA Router1(config-subif)#ip rip authentication mode text Router1(config-subif)#end

Router1#

Example4) How to enables MD5-based RIP authentication?

Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#key chain ORA Router1(config-keychain)#key 1 Router1(config-keychain-key)#key-string oreilly Router1(config-keychain-key)#exit Router1(config)#interface FastEthernet0/0.1 Router1(config-subif)#ip rip authentication key-chain ORA Router1(config-subif)#ip rip authentication mode md5 Router1(config-subif)#end

Router1#

Example5) How to disable the sending of RIP updates on all interfaces? Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#router rip Router1(config-router)#passive-interface default Router1(config-router)#no passive-interface FastEthernet0/0.1 Router1(config-router)#network 172.22.0.0 Router1(config-router)#network 172.25.0.0 Router1(config-router)#network 192.168.1.0 Router1(config-router)#exit Router1(config)#end Router1#