Questions on PE-CE EIGRP/RIP.........

Unanswered Question
Mar 1st, 2007

If i have PE-CE as Eigrp or RIP.And my CE site is multihomed to PE then which bit will used to avoid Loop ?(As in OSPF Down bit and Tag bit are used to avoid loop)

I have this problem too.
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mheusinger Thu, 03/01/2007 - 06:33

Hi,

there is no "bit" in RIP to avoid loops. you would have to filter routes with distribution lists and also possibly adjust administrative distance.

In EIGRP there is a possibility to use SOO and BGP cost community to avoid loops. Have a look at "EIGRP MPLS VPN PE-CE Site of Origin (SoO)"

http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/products_feature_guide09186a00806994d0.html

and at "BGP Cost Community Support for EIGRP MPLS VPN PE-CE with Backdoor Links"

http://www.cisco.com/en/US/products/sw/iosswrel/ps1838/products_feature_guide09186a00805ad31e.html

for the technical details and configuration examples.

Hope this helps!

Regards, Martin

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