bgp to eigrp question

Answered Question

I have a bgp AS number say 1. I am also doing LOCAL-AS 2 for a client. To distribute the incoming routes to eigrp, I have a statement under eigrp as "redistribute bgp 1 route-map xxx"

Will this redistribution also include the routes coming for LOCAL-AS 2? Or I need to do something more to get that also advertise in eigrp?

I have this problem too.
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Correct Answer by Giuseppe Larosa about 8 years 3 months ago

Hello Mehdi,

the local-as is a neighbor oriented command to make the router to pretend to be part of BGP AS 2 instead of AS1 but BGP process is still AS1 so the redistribute command should be:

red bgp 1 route-map xxx

remember to configure a seed metric otherwise no redistribution occurs

you can use

default-metric 10000 10 255 1 1500

inside router eigrp process

Hope to help

Giuseppe

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Marwan ALshawi Sun, 09/21/2008 - 05:23

u mean u have

bgp as1---bgp as 2 and eigrp ?

if this the case

u need ebgp between the bgp peers and only redistribute bgp as 2 into eigrp

Hi Marwan,

No. Let say I have config as below:

router bgp 1

neighbor abc.def.ghi.jkl remote-as 25

neighbor abc.def.ghi.jkl distribute-list 7 in

neighbor efg.hjk.uik.loi Local-AS 2

neighbor efg.hjk.uik.loi remote-as 4888

neighbor efg.hjk.uik.loi distribute-list 6 in

If you notice, I have two seperate neighbor with different routes coming in.

Under eigrp 107, I need to put a statement that will redistribute routes coming from both distribute-list 6 & 7. If i put "redistribute bgp 1, will it include both peer routes even though for the second peer, I am bgp 2 not 1.

Hope this explain.

Thank you

Correct Answer
Giuseppe Larosa Sun, 09/21/2008 - 05:31

Hello Mehdi,

the local-as is a neighbor oriented command to make the router to pretend to be part of BGP AS 2 instead of AS1 but BGP process is still AS1 so the redistribute command should be:

red bgp 1 route-map xxx

remember to configure a seed metric otherwise no redistribution occurs

you can use

default-metric 10000 10 255 1 1500

inside router eigrp process

Hope to help

Giuseppe

Marwan ALshawi Sun, 09/21/2008 - 05:40

mehdi i agree with Giuseppe

the best way is a route map

within the route map u can use ACL or prefix list to match what traffic u want to be redistributed

simple and good luck

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