RIP not working on 2821/12.4.20T

Hello,

if i configure rip on a 2821 box there`s not error message. But RIP doesn't work, and the configured lines are not visible in the configuration!?

Any Ideas?

Regards,

Karsten

Reply to
Karsten Fischer
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They are not showing up in 'show run'? I'm sure this is not the case, but you aren't doing 'show start' and haven't done a write mem or copy run start right? Please define rip is not working...do you have a neighbor? What does show ip protocol say (please paste)?

Reply to
Trendkill

RIP requires that the interfaces are configured with an IP address, are not shutdown, have a working communication path to the other router, and have the adjoining interfaces advertised with the network command in the RIP configuration. Here is a sample RIP configuration for two routers directly connected through a switch:

Router R1: FastEthernet0/0 ip address 192.168.1.1 255.255.255.252 Loopback0 ip address 172.31.1.0 255.255.255.192

Router R2: FastEthernet0/0 ip address 192.168.1.2 255.255.255.252 Loopback0 ip address 172.31.2.0 255.255.255.192

Configuration Commands for R1:

router rip version 2 network 192.168.1.0 0.0.0.3 network 172.31.1.0 0.0.0.63

Configuration Commands for R2:

router rip version 2 network 192.168.1.0 0.0.0.3 network 172.31.1.0 0.0.0.63

You should be able to see the 172.31.1.0/26 network in the R2 routing table and the 172.31.2.0/26 network in the R1 routing table.

----- Scott Perry Indianapolis, IN

-----

They are not showing up in 'show run'? I'm sure this is not the case, but you aren't doing 'show start' and haven't done a write mem or copy run start right? Please define rip is not working...do you have a neighbor? What does show ip protocol say (please paste)?

Reply to
Scott Perry

That's not an assignable host address, that's a network ID.

Network ID: 172.31.1.0 Host range: 172.31.1.1 - 172.31.1.62 Broadcast:

172.31.1.63

That's not an assignable host address, that's a network ID.

Network ID: 172.31.2.0 Host range: 172.31.2.1 - 172.31.2.62 Broadcast:

172.31.2.63

Specifying a mask with RIP network command?

network 172.31.2.0, not network 172.31.1.0

Specifying a mask with RIP network command?

Best Regards, News Reader

Reply to
News Reader

RIGHT! You got me! Now why didn't you put a corrected version up, Newsreader?

THIS configuration was tested on two routers connected to each other via FastEthernet, not from memory like my last posting:

R1 interface Loopback0 ip address 172.31.1.1 255.255.255.192 ! interface FastEthernet0/0 ip address 192.168.1.1 255.255.255.252 ! router rip version 2 network 172.31.1.0 network 192.168.1.0

R2 interface Loopback0 ip address 172.31.2.1 255.255.255.192 ! interface FastEthernet0/0 ip address 192.168.1.2 255.255.255.252 ! router rip version 2 network 172.31.1.0 network 192.168.1.0

The configuration will revert back to where the RIP configuration has "network 172.31.0.0" instead of what was entered.

Again, make sure that the two routers running RIP have a good connection to each other, have interfaces up that will be advertised through RIP, and both are advertising the network range which they use to connect to each other. Use the command "show ip rip database" for some more information.

----- Scott Perry Indianapolis, IN

-----

Reply to
Scott Perry

network 172.31.2.0, not network 172.31.1.0

Best Regards, News Reader

Reply to
News Reader

Ah, quite true. Then again, the configuration will revert back to where the RIP configuration has "network 172.31.0.0" instead of what was entered, so it still works, as stated in my previous message.

Karsten, I hope this helps you with your RIP configuration. If not, ask "News Reader".

----- Scott Perry Indianapolis, IN

-----

Reply to
Scott Perry

Try to use the following command:

router rip no auto-summary

Its possible to solve, maybe because the net is summarizing.

Marlon Resende- Brazil

Reply to
marlonvresende

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