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Cisco Bug: CSCuq48542 - Comm arent propagated in vpnv4 advertisements after ipv4 mdt config

Last Modified

Sep 14, 2019

Products (1)

  • Cisco 12000 Series Routers

Known Affected Releases


Description (partial)

GSR router does not send community and extended-community attributes to bgp vpnv4 neighbor, even though in the configuration of the neighbor, it is applied the command "neighbor x.x.x.x send-community both".

Issue happens when one bgp neighbor is already configured and activated in the bgp vpnv4 and mdt address-families, and then this same neighbor configuration is changed so it is added to an existing peer-group through the command "neighbor x.x.x.x peer-group xxxxxxx", only in the ipv4 mdt family. This will make the router stop sending the community an extended-community attributes in the vpnv4 session with this neighbor.

This issue only happens with this specific configuration order, to avoid triggering issue also apply the command in the vpnv4 address-family as recommended in the configuration guide.
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