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gkuzmowycz
Beginner

Redistributing vs. advertising

I've read a lot of Cisco documentation and have worked through the relevant sections of Jeff Doyle's book, but I'm still having difficulty with this topic. Can somebody give a "25 words or less" sort of explanation of the difference between "redistributing via" and "advertised by"?

17 REPLIES 17

How long did you wait?

It had been over 24 hours.

Try clearing the route table.

That fixed it. Thanks.

Hi Edison,

IMHO, the explanantion might be:

The "Advertising by" line is showing the particular command used for the redistribution from one routing protocol to the other.

I.e., in your case, you probably use:

router ospf 1

redistribute eigrp 1 metric 1 1 1 1 1 route-map CONNECTED-TO-IGP

and

router eigrp 1

redistribute ospf 1 subnets route-map CONNECTED-TO-IGP

aren't you?

I can't explain the previous example:

"R2#sh ip route 172.28.0.0

Routing entry for 172.28.0.0/16

Known via "connected", distance 0, metric 0 (connected, via interface)

Redistributing via eigrp 1, rip

Advertised by rip"

It looks like a RIP route redistributed into EIGRP by "redistribute rip" command.

I can't remember: isn't there RIP redistribution to EIGRP automatic in IOS?

BR,

Milan

I.e., in your case, you probably use:

router ospf 1

redistribute eigrp 1 metric 1 1 1 1 1 route-map CONNECTED-TO-IGP

and

router eigrp 1

redistribute ospf 1 subnets route-map CONNECTED-TO-IGP

aren't you?

Yes.

I can't remember: isn't there RIP redistribution to EIGRP automatic in IOS?

No.

__

Edison