[nsp] MPLS VPN - vrf export map and route-target export

[Bruce Pinsky]

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Clinton Work wrote:

| I'm trying to find some clarification on the interaction of "export map" and
| "route-target export". The following VRF config works, but I've seen
| occational reports of problems. Under normal circumstances the
| CPE loopback is assigned two RTs (40000:1 and 40000:4). The RT
| 40000:1 is added by "route-target export 40000:1" and RT 40000:44
| is added with "export map cpe-loopbacks". When I've seen problems
| the CPE loopback only has RT 40000:1. The easy solution is to just
| use the "export map", but it requires a more complicated export route-map
| per VRF.
|
| Questions:
| a) Is it valid to combine both "export map" with additive communities
|     and "route-target export"?
| b) Has anyone encoutered software defects when combining them?
|
| VRF configuration:
|
| ip vrf custa
|  rd 40000:1
|  export map cpe-loopbacks
|  route-target export 40000:1
|  route-target import 40000:1
|  route-target import 40000:4
|
| route-map cpe-loopbacks permit 10
|  match ip address cpe-loopbacks
|  set extcommunity rt  40000:44 additive
| !
| route-map cpe-loopbacks permit 20
| !
|
|

Don't know your version, but I did notice these:

CSCdx82580 BGP: vpn export map does not set all extended communities
CSCdy72332 match ip address in export-map not working correctly

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bep

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