PE - PE Links ( Best Practise ???? )

Unanswered Question
Oct 14th, 2007

ALL ,

As per recommended best practise , would it be advisable to have PE to PE connectivity ( both IGP & ldp connectivity ) for resiliency.

Scenario is you have collocated PEs running VRRP with dual homed CEs??

Any comment or Suggestion ?

I have this problem too.
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g.oridota Sun, 10/14/2007 - 23:46

Hi Swaroop,

I have two PE routers in the same sites with uplinks to different P Nodes. The PE Nodes run vrrp on the LAN interface for the various LAN Based CE devices.

However , if one P-PE links fails , traffic is not routed via the second PE .

Is it advisable to run direct links between both PEs and turn on label switching as per recommended best practise ??

swaroop.potdar Mon, 10/15/2007 - 05:37

Hi G,

Do refer to this link if you topology is similar to the topology shown in this document for HSRP support for MPLS VPN;s then it will work.

http://www.cisco.com/en/US/products/sw/iosswrel/ps1834/products_feature_guide09186a00806993c5.html

As although this support for VRRP is not mentioned, but when i tested it it worked fine with VRRP as well, populating the right arp and cef entries for the VRF beneath.

HTH-Cheers,

Swaroop

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