08-17-2009 06:59 AM
Here are the two configs.
The OSPF neighbor relationship shows up. A show interfaces serial1/0/0 detail shows:
bottom-7507#show mpls interfaces s1/1/0 det
Interface Serial1/1/0:
IP labeling enabled (ldp):
Interface config
IGP config
LSP Tunnel labeling not enabled
BGP labeling not enabled
MPLS operational
Optimum Switching Vectors:
IP to MPLS Turbo Vector
MPLS Turbo Vector
Fast Switching Vectors:
IP to MPLS Fast Switching Vector
MPLS Turbo Vector
MTU = 1580
any suggestions?
08-18-2009 08:03 AM
MP-iBGP is required to foward vrf routes over the service provider cloud. For that you require MP-iBGP. Please configure the given command and run the show ip bgp vpnv4 all summary
Bottom
router bgp 65500
bgp router-id 10.255.0.2
no bgp default ipv4-unicast
neighbor 10.255.0.1 remote-as 65500
neighbor 10.255.0.1 remote-as update-source loopback0
address-family vpnv4
neighbor RR_Routers send-community extended
neighbor 10.255.0.1 activate
neighbor 10.255.0.1 send-community both
address-family ipv4 vrf VRFA
redistribute connected
address-family ipv4 vrf VRFB
redistribute connected
top
router bgp 65500
bgp router-id 10.255.0.1
no bgp default ipv4-unicast
neighbor 10.255.0.2 remote-as 65500
neighbor 10.255.0.2 remote-as update-source loopback0
address-family vpnv4
neighbor RR_Routers send-community extended
neighbor 10.255.0.2 activate
neighbor 10.255.0.2 send-community both
address-family ipv4 vrf VRFA
redistribute connected
address-family ipv4 vrf VRFB
redistribute connected
regards
shivlu jain
08-18-2009 08:14 AM
If that's the case- then what is the use of the bgp ldp autoconfig? I want to remove BGP as part of the IGP fabric. Isnt this all supposed to be supported over OSPF?
08-18-2009 08:29 AM
I donot know about that command. But ldp autoconfig for IGP is there which enable mpls on all interfaces automatically.
But you need to configure MP-iBGP for communication end to end.
regards
shivlu jain
08-19-2009 10:02 AM
Hello Greg,
If ping reachability is there between both the router, the please check whether you enable "LDP" on both the routers glocally. If yes and other configs are also OK but still there is no traffic passing even after reachability between routers, then there may also be problem related to IoS of both end PE routers.
08-20-2009 06:59 AM
I guess this is where Im confused. I am trying to use OSPF LDP Autoconfig to move vrf traffic from router to router and eliminate BGP as an IGP. But Im seeing in the documents that BGP is required on all of the PE's for MP-BGP. What is the optimal way to set this up? Am I going to have to have all of the PE's peer across the network to share this VRF information?
08-20-2009 11:35 PM
Hello Greg,
U can chck with this command "mpls ldp neighbor
08-21-2009 12:34 AM
Add this BGP configuration to PE:
(replace xxx by proper AS)
bottom router:
router bgp xxx
no bgp default ipv4
nei iBGP peer-group
nei iBGP remote xxx
nei iBGP update loop 0
nei 10.255.0.1 peer iBGP
add vpnv4
nei 10.255.0.1 activate
add ipv4 vrf VRFA
red conn
add ip44 vrf VPNB
red conn
***************************************
top router:
router bgp xxx
no bgp default ipv4
nei iBGP peer-group
nei iBGP remote xxx
nei iBGP update loop 0
nei 10.255.0.2 peer iBGP
add vpnv4
nei 10.255.0.2 activate
add ipv4 vrf VRFA
red conn
add ipv4 vrf VPNB
red conn
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