Ripv1 question

[jadiutori1]

Hi All,

Newbie here.  Just studying for the test.  I have two small routers back to back on my work bench.  Trying to get ripv1 going between them.  It seemed to work for a while but it seems the serial port on the router "Joe1700" is not enabled.  Not sure how that happened.  When I do "debug ip rip" I get the message "RIP: ignored v1 packet from 11.0.0.2 (not enabled on Serial1)".

How do I enable Serial1 ???

Thank you

This is the disable serial port.  You can see no interface is listed.

This is the good one.  Interface is listed.

Joe1700>sh ip protocol Routing Protocol is "rip" Sending updates every 30 seconds, next due in 3 seconds Invalid after 180 seconds, hold down 180, flushed after 240 Outgoing update filter list for all interfaces is Incoming update filter list for all interfaces is Redistributing: rip Default version control: send version 1, receive version 1 Automatic network summarization is in effect Routing for Networks: 192.168.1.0 Passive Interface(s): FastEthernet0 Routing Information Sources: Gateway Distance Last Update Distance: (default is 120)

Joe1601>sh ip protocol Routing Protocol is "rip" Sending updates every 30 seconds, next due in 0 seconds Invalid after 180 seconds, hold down 180, flushed after 240 Outgoing update filter list for all interfaces is Incoming update filter list for all interfaces is Redistributing: rip Default version control: send version 1, receive version 1 Interface Send Recv Key-chain Serial0     1     1 Routing for Networks: 11.0.0.0 12.0.0.0 21.0.0.0 22.0.0.0 Passive Interface(s): Ethernet0 Loopback1 Loopback2 Routing Information Sources: Gateway Distance Last Update Distance: (default is 120)

[jadiutori1]

I should point out the interace is up.  I can ping across it to the other router.

[Mark Malone]

Hi

Looks like only one side is advertising the 192 network in routing for networks, is that the serial interfaces ,if its 192.168.1.x on each serial each interface the network should be advertised on each router to form the RIP relationship

whats the router rip configuration on each side and the sh run int serial x/x currently configured

also if this is real equipment with real serial cables you will need clocking set on dce side

best off practising with ripv2 , rip1 wouldn't be used in real world , rare you would see even see RIP that much at all anymore but it is still out there in some lans

[jadiutori1]

Hi Mark,

Thanks for the reply.  I think the clocking is fine.  I can ping across the link.

The 192 is only on one side.  

The real question to me is why and how is a serial interface not enabled?  The interface is working, as I said I can ping across it.  

Joe

[Mark Malone · Accepted solution]

if you have 192 network on each serial interface , it needs to be advertised locally in each router , nothing wrong with the serial if its up/up and you can ping far side that shows arp is working and the interface is working but rip wont form between the 2 serial interfcaes unless the subnet is advertised each side

[jadiutori1]

Hi Mark.  You were right.  I was not advertising the route of the interface.  

Thanks so much.  I know RIPv1 is old, but if I cant configure that, how am I ever going to configure OSPF, BGP, etc.....

Thanks again.

[Mark Malone]

glad you got it sorted , you will find with most of the igps there similar in setup and rules some just have extra features and ability's in how they operate but generally setup the same , BGP is bit different alright it requires an igp to work with it for routing in IBGP anyway,  but that's what the forum and labbing is, for good luck with the rest and post any issues you run into theres nearly always someone that can assist here