MikroTik

I use OSPF dynamic routing on our Mikrotik RouterOSs.

I have two problems.

1. The OSPF Hello packets are broadcast out every interface even though I only have it setup on one interface. How can I stop this.


2. the OSPF route advertising does not get summarised. Every dynamically connected customer has a /32 route advised upstream. I would like to advertise the POOL address if possible and also support summarisation

To stop the excess Hello packets, you can set the interface you don't want them on to have extremely high timers (dosen't stop it, but makes it a non-issue). Or, you can block them in the output firewall chain.

For route summarization of dynamic pools, I do this:

Create a bridge with no member ports (loopback).
Place a tiny (/30) non-routable subnet on that loopback.
Set a route for the entire dynamic pool via a non-existant non-routable on the loopback subnet.
Make sure that route gets announced via OSPF.
Set the local IP for the PPP profile to something that does _NOT_ get announced via OSPF.
Set the reomte IP for the PPP profile to use the pool.

The only problem I've had with this is static customers, who I do want a /32 route to be announced for, require an individual /32 network entry for OSPF. (which is a pain)

This was a major P.I.T.A. to get working, and involved several days of trial and error.

Proper summarization would be nice, but is fairly complex, and I have had many problems getting it to work on most OSPF routers. Only on Cisco have I actually had it work the way I want, and even then it put too much of a load on the poor little thing.

--Eric