Ospf and eigrp redistribution.

[sbrobak]

Customer has a core of 6500s running eigrp. Between two of the routers, they have configured ospf area 0. That is, there is one gigbit link between the routers enabled for eigrp, but not ospf.

There is other "routers" connected to these switches running ospf - all in area 0.

The two 6500s is redistributing ospf and eigrp (both directions) using tags for not generating routing loops. But what about LSAs? Is there any "danger" in such a config? Should the single gigabit between the routers also be enabled for ospf?

[steve.barlow]

Not sure I understand the design (all routers run ospf except for one eigrp link?), but what function does the EIGRP serve? Can OSPF do it, if yes I would remove eigrp and run ospf (not a big fan of redistribution on production environments when not necessary) everywhere. The way it is set up now won't cause loops as long as your filters are in place, but moving to a homogenous environment may save you time troubleshooting in the future.

Steve