Lets say I have a 48 port Layer 3 switch and I only want to advertise out of one interface (with the ability to add interfaces later; one at a time) and not receive any advertising. What is the easiest way to accomplish this task without advertising out all of the other interfaces. I will eventually be adding other interfaces as we bring on devices connected to that interface, but I do not want it to broadcast out every interface. I am guessing I will need to add a default to the router rip statement of some sore. I also know that I could suppress advertising by doing a default passive interface, but I do not want them to receive rip updates. These legs are the only thing that runs rip on the network and is intended for FTTH NIDS. If there is a document that would help, I would appreciate that too.
This is a generic sample of what I am doing right now:
The interfaces are actually trunks. There are a couple of them that are actually routed ports however too. The interfaces are set up in different broadcast domains and are on seperate vlans. The vlans would be perfect and was what i was looking for. This is a 3750 that has 802.1q vlans to DSLAMS. There are usually 4 VLANS:
I only want to send out rip advertisements out the Management VLANS. Here is the exact port configuration/ interface I am talking about:
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 15,131,225,324
switchport mode trunk
The vlan 324 is where I want rip advertised. The other ones i do not want any rip at all.
ip address 10.101.31.1 255.255.255.0
ip helper-address 10.100.254.25
no ip proxy-arp
I have tried doing rip like this:
redistribute ospf 3000 metric 2 route-map KENZ
distribute-list 15 out Vlan324
distribute-list 16 out
distribute-list 16 in
This seemed to break everything which kind of makes sense. I mirrored g1/0/6 and didn't see rip at all after that. I didn't see it out the other interfaced either though :).
Basically, I want to advertise only on specific VLANS. I can post run-config if that would help, but I think this helps.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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