summarising EIGRP as it redistributes into BGP?

[jmcgrady1]

I have a 9300 switch and 4431 router participating in EIGRP. The router redistributes EIGRP into BGP, and vice versa, for its WAN connection.  That is working fine. However i'd like to summarise the many small routes advertised from EIGRP so that BGP gets a smaller set. How would i go about summarising EIGRP routes as they redistribute into BGP?

[balaji.bandi]

If these device have only 1 Exit point then default route should be good enough,  if this not your case explain ?

[MHM Cisco World]

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[Giuseppe Larosa]

Hello @jmcgrady1 ,

I would use BGP aggregate-address command for this purpose, because creating the summary routes in EIGRP can have side effects and you just want to reduce the BGP routes.

Hope to help

Giuseppe

[MHM Cisco World]

the different and difficult to answer you is where you want to summarize eigrp route?

in CE

you can use below command under the interface toward PE
ip summary-address eigrp leak-map

leak-map use to filter some route 

in PE

you can filter according to 

match tag 

here the idea,
you can summary in CE and can use filter in CE or PE.
hope this answer your question