09-22-2022 07:20 AM - last edited on 09-26-2022 11:58 PM by Translator
Hi,
I created the VRF in PE router R38 AS5610 and similarly in PE router R35 AS 6520 and I configured the MP-BGP between the routes.
PE -R38 to CE-R76----- PE-R35 to CE-R82----
configured static route and redistributed to BGP
I am not getting the BGP route (82.82.82.0) from PE-R38
R38#sh ip route vrf F-1
Routing Table: F-1
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.10.76.0/24 is directly connected, Ethernet0/0
L 10.10.76.2/32 is directly connected, Ethernet0/0
76.0.0.0/24 is subnetted, 1 subnets
S 76.76.76.0 [1/0] via 10.10.76.1
R38
interface Loopback0
ip address 38.38.38.38 255.255.255.255
!
interface Ethernet0/0
vrf forwarding F-1
ip address 10.10.76.2 255.255.255.0
duplex auto
!
interface Ethernet0/1
ip address 10.10.38.1 255.255.255.0
duplex auto
mpls ip
!
interface Ethernet0/2
ip address 10.10.33.1 255.255.255.0
duplex auto
mpls ip
!
interface Ethernet0/3
no ip address
shutdown
duplex auto
!
interface Ethernet1/0
no ip address
shutdown
duplex auto
!
interface Ethernet1/1
no ip address
shutdown
duplex auto
!
interface Ethernet1/2
no ip address
shutdown
duplex auto
!
interface Ethernet1/3
no ip address
shutdown
duplex auto
!
router ospf 1
router-id 37.37.37.37
network 10.10.33.0 0.0.0.255 area 0
network 10.10.38.0 0.0.0.255 area 0
network 37.37.37.0 0.0.0.0 area 0
network 38.38.38.38 0.0.0.0 area 0
!
router bgp 6510
bgp router-id 38.38.38.38
bgp log-neighbor-changes
no bgp default ipv4-unicast
neighbor 75.75.75.75 remote-as 6510
neighbor 75.75.75.75 update-source Loopback0
!
address-family vpnv4
neighbor 75.75.75.75 activate
neighbor 75.75.75.75 send-community extended
neighbor 75.75.75.75 next-hop-self
exit-address-family
!
address-family ipv4 vrf F-1
redistribute connected
redistribute static
exit-address-family
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
ip route vrf F-1 76.76.76.0 255.255.255.0 10.10.76.1
!
ipv6 ioam timestamp
!
!
mpls ldp router-id Loopback0
R75
interface Loopback0
ip address 75.75.75.75 255.255.255.255
!
interface Ethernet0/0
ip address 10.10.32.2 255.255.255.0
duplex auto
mpls ip
!
interface Ethernet0/1
ip address 10.10.75.1 255.255.255.0
duplex auto
mpls ip
!
interface Ethernet0/2
ip address 10.75.75.1 255.255.255.0
duplex auto
mpls bgp forwarding
!
interface Ethernet0/3
no ip address
shutdown
duplex auto
!
router ospf 1
router-id 75.75.75.75
network 10.10.32.0 0.0.0.255 area 0
network 10.10.75.0 0.0.0.255 area 0
network 75.75.75.75 0.0.0.0 area 0
network 75.75.75.0 0.0.0.255 area 0
!
router bgp 6510
bgp router-id 75.75.75.75
bgp log-neighbor-changes
no bgp default ipv4-unicast
no bgp default route-target filter
neighbor 10.75.75.2 remote-as 6520
neighbor 38.38.38.38 remote-as 6510
neighbor 38.38.38.38 update-source Loopback0
!
address-family vpnv4
neighbor 10.75.75.2 activate
neighbor 10.75.75.2 send-community extended
neighbor 38.38.38.38 activate
neighbor 38.38.38.38 send-community extended
neighbor 38.38.38.38 next-hop-self
exit-address-family
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
ipv6 ioam timestamp
!
!
mpls ldp router-id Loopback0
R37
interface Loopback0
ip address 37.37.37.37 255.255.255.255
!
interface Ethernet0/0
ip address 10.10.37.1 255.255.255.0
duplex auto
mpls ip
!
interface Ethernet0/1
ip address 10.10.78.1 255.255.255.0
duplex auto
mpls ip
!
interface Ethernet0/2
ip address 10.75.75.2 255.255.255.0
duplex auto
mpls bgp forwarding
!
interface Ethernet0/3
no ip address
shutdown
duplex auto
!
router ospf 1
router-id 37.37.37.37
network 10.10.37.0 0.0.0.255 area 0
network 10.10.78.0 0.0.0.255 area 0
network 37.37.37.37 0.0.0.0 area 0
!
router bgp 6520
bgp router-id 37.37.37.37
bgp log-neighbor-changes
no bgp default ipv4-unicast
no bgp default route-target filter
neighbor 10.75.75.1 remote-as 6510
neighbor 35.35.35.35 remote-as 6520
neighbor 35.35.35.35 update-source Loopback0
!
address-family vpnv4
neighbor 10.75.75.1 activate
neighbor 10.75.75.1 send-community extended
neighbor 35.35.35.35 activate
neighbor 35.35.35.35 send-community extended
neighbor 35.35.35.35 next-hop-self
exit-address-family
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
ipv6 ioam timestamp
!
!
mpls ldp router-id Loopback0
R35
interface Loopback0
ip address 35.35.35.35 255.255.255.255
!
interface Ethernet0/0
ip address 10.10.34.2 255.255.255.0
duplex auto
mpls ip
!
interface Ethernet0/1
ip address 10.10.35.1 255.255.255.0
duplex auto
mpls ip
!
interface Ethernet0/2
vrf forwarding F-2
ip address 10.10.82.1 255.255.255.0
duplex auto
!
interface Ethernet0/3
no ip address
shutdown
duplex auto
!
interface Ethernet1/0
no ip address
shutdown
duplex auto
!
interface Ethernet1/1
no ip address
shutdown
duplex auto
!
interface Ethernet1/2
no ip address
shutdown
duplex auto
!
interface Ethernet1/3
no ip address
shutdown
duplex auto
!
router ospf 1
router-id 35.35.35.35
network 10.10.34.0 0.0.0.255 area 0
network 10.10.35.0 0.0.0.255 area 0
network 35.35.35.35 0.0.0.0 area 0
!
router bgp 6520
bgp router-id 35.35.35.35
bgp log-neighbor-changes
no bgp default ipv4-unicast
neighbor 37.37.37.37 remote-as 6520
neighbor 37.37.37.37 update-source Loopback0
!
address-family vpnv4
neighbor 37.37.37.37 activate
neighbor 37.37.37.37 send-community extended
neighbor 37.37.37.37 next-hop-self
exit-address-family
!
address-family ipv4 vrf F-2
redistribute connected
redistribute static
exit-address-family
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
ip route vrf F-2 82.82.82.0 255.255.255.0 10.10.82.2
!
ipv6 ioam timestamp
!
!
mpls ldp router-id Loopback0
!
control-plane
Solved! Go to Solution.
09-23-2022 06:46 AM - last edited on 09-27-2022 12:58 AM by Translator
Hi @R Manjunatha ,
The issue was due to the missing
address-family vrf F-1
under BGP as per config you posted before.
R35(config-vrf)#do sh run vrf
Building configuration...
Current configuration : 284 bytes
vrf definition F-2
rd 100:1
route-target export 100:1
route-target import 100:1
!
address-family ipv4
exit-address-family
!
!
interface Ethernet0/2
vrf forwarding F-2
ip address 10.10.82.1 255.255.255.0
duplex auto
!
ip route vrf F-2 82.82.82.0 255.255.255.0 10.10.82.2
end
Regards,
09-22-2022 08:11 AM - last edited on 09-27-2022 12:10 AM by Translator
Hi @R Manjunatha ,
It probably has to do with the import/export policy.
Can you share the
show runn vrf output from R38 and R35.
Regards,
09-22-2022 08:35 AM - last edited on 09-27-2022 12:16 AM by Translator
in R38
router ospf 1
router-id 37.37.37.37 <<- OSPF dual router-ID
network 10.10.33.0 0.0.0.255 area 0
network 10.10.38.0 0.0.0.255 area 0
network 37.37.37.0 0.0.0.0 area 0 <<-???
network 38.38.38.38 0.0.0.0 area 0
also as @Harold Ritter mention the VRF route-target import/export must config
09-22-2022 08:50 AM
Hi @MHM Cisco World ,
The fact that R37 and R38 share the same router-id would be an issue if they were both part of the same AS, but they are not so it shouldn't matter.
Regards,
09-22-2022 09:57 AM - last edited on 09-27-2022 12:17 AM by Translator
it's a typo error, Anyway, I change the router -ID
vrf details for R38 and R35.
R35(config-vrf)#do sh run vrf
Building configuration...
Current configuration : 284 bytes
vrf definition F-2
rd 100:1
route-target export 100:1
route-target import 100:1
!
address-family ipv4
exit-address-family
!
!
interface Ethernet0/2
vrf forwarding F-2
ip address 10.10.82.1 255.255.255.0
duplex auto
!
ip route vrf F-2 82.82.82.0 255.255.255.0 10.10.82.2
end
R38#sh run vrf
Building configuration...
Current configuration : 284 bytes
vrf definition F-1
rd 100:1
route-target export 100:1
route-target import 100:1
!
address-family ipv4
exit-address-family
!
!
interface Ethernet0/0
vrf forwarding F-1
ip address 10.10.76.2 255.255.255.0
duplex auto
!
ip route vrf F-1 76.76.76.0 255.255.255.0 10.10.76.1
end
R38#
09-22-2022 10:26 AM - last edited on 09-27-2022 12:18 AM by Translator
Hi @R Manjunatha ,
The import/export looks good.
Can you provide the following commands output from R75 and R37:
show bgp vpnv4 uni all summ
show bgp vpnv4 uni all
Regards,
09-22-2022 10:27 AM - edited 09-22-2022 10:36 AM
When you change router-id
You need to clear ip ospf process to take effect
09-23-2022 12:45 AM
Yes. Default it will ask after changing router-ID and I have done it.
09-23-2022 01:53 AM - last edited on 09-27-2022 12:20 AM by Translator
Hi,
Please find the output from R75 and R37
R75#show bgp vpnv4 uni all summ
BGP router identifier 75.75.75.75, local AS number 6510
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.75.75.2 4 6520 7 7 1 0 0 00:03:54 0
38.38.38.38 4 6510 6 7 1 0 0 00:03:38 0
R75#show bgp vpnv4 unicast all
R37#show bgp vpnv4 uni all summ
BGP router identifier 37.37.37.37, local AS number 6520
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.75.75.1 4 6510 8 8 1 0 0 00:05:19 0
35.35.35.35 4 6520 8 8 1 0 0 00:04:03 0
R37#show bgp vpnv4 uni all
R37#
09-23-2022 01:58 AM - last edited on 09-27-2022 12:22 AM by Translator
Hi
I configured the
no BGP default ipv4-unicast
on both the routers is there any issue with that?
09-23-2022 04:51 AM - last edited on 09-27-2022 12:23 AM by Translator
Hi @R Manjunatha ,
This command just instructs BGP not to activate
address-family ipv4 uni
by default, which is what you want if you are strictly configuring VPNv4.
Regards,
09-23-2022 04:48 AM - last edited on 09-27-2022 12:24 AM by Translator
Hi @R Manjunatha ,
R37 and R75 are not receiving any routes from R38 and R35.
Can you please enter the following configuration:
R38:
router bgp 6510
address-family ipv4 vrf F-1
redistribute connected
redistribute static
exit-address-family
R35:
router bgp 6520
address-family ipv4 vrf F-2
redistribute connected
redistribute static
exit-address-family
An then "show run vrf" again from both routers.
Regards,
09-23-2022 05:44 AM - last edited on 09-27-2022 12:25 AM by Translator
Hi,
please find the
show run vrf
for both the routers
R38#SH RUN VRF
Building configuration...
Current configuration : 402 bytes
vrf definition F-1
rd 100:1
route-target export 100:1
route-target import 100:1
!
address-family ipv4
exit-address-family
!
!
interface Ethernet0/0
vrf forwarding F-1
ip address 10.10.76.2 255.255.255.0
duplex auto
!
router bgp 6510
!
address-family ipv4 vrf F-1
redistribute connected
redistribute static
exit-address-family
!
ip route vrf F-1 76.76.76.0 255.255.255.0 10.10.76.1
end
R35(config)#do sh run vrf
Building configuration...
Current configuration : 402 bytes
vrf definition F-2
rd 100:1
route-target export 100:1
route-target import 100:1
!
address-family ipv4
exit-address-family
!
!
interface Ethernet0/2
vrf forwarding F-2
ip address 10.10.82.1 255.255.255.0
duplex auto
!
router bgp 6520
!
address-family ipv4 vrf F-2
redistribute connected
redistribute static
exit-address-family
!
ip route vrf F-2 82.82.82.0 255.255.255.0 10.10.82.2
end
09-23-2022 06:13 AM - last edited on 09-27-2022 12:27 AM by Translator
Hi @R Manjunatha ,
It should work now. Can you please check.
When you posted the
sh runn vrf
before, you were missing the
address-family ipv4 vrf F-1
and
address-family ipv4 vrf F-2
, which would explain why the VRF routes were not propagated.
Regards,
09-23-2022 05:40 AM - last edited on 09-27-2022 12:52 AM by Translator
I run lab and I success get connect prefix
no bgp default route-target filter <<-
remove this command and add it again
then clear
ip bgp 6510 / 6520
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