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11-13-2014
04:57 AM
- last edited on
03-25-2019
03:43 PM
by
ciscomoderator
Hi all,
I've the following problem which I hope people can help me with. I've built a lab as proof of concept.
The topology is attached.
> There are 4 sites, each site is connected via two separate VPLS networks. The aim is that as long as there is one active carrier in a site it can still reach every network.
> Each site is advertising routes it has received and local routes.
For this scenario,
Carrier A has dropped in Frankfurt
Carrier B has dropped in CIX
There are two problems with the current scenario.
1. All sites can see routes to each other, but can not ping each other.... based on best paths I believe this is due to asynchronous routing but am unsure how to correct without using redistributed statics
2. I've split subnets to travel via a specific VPLS network based on local preference, my original thoughts were that if a carrier drops in a site it would move all traffic over the second VPLS network and reach the router that way. However it chooses a path with multiple hops. I know local preference is preferred...so need to somehow make low hops the preferred.
thank you for your help
CIX sees
CIX#sh ip bgp
BGP table version is 77, local router ID is 10.16.16.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
* 10.1.1.0/24 172.17.90.43 150 0 65019 64912 i
*> 172.17.90.42 0 150 0 64912 i
* 10.2.2.0/24 172.17.90.43 150 0 65019 64912 i
*> 172.17.90.42 0 150 0 64912 i
* 10.3.3.0/24 172.17.90.43 150 0 65019 64912 i
*> 172.17.90.42 0 150 0 64912 i
*> 10.4.4.0/24 0.0.0.0 0 32768 i
*> 10.5.5.0/24 0.0.0.0 0 32768 i
*> 10.6.6.0/24 0.0.0.0 0 32768 i
*> 10.7.7.0/24 172.17.90.43 0 150 0 65019 i
* 172.17.90.42 150 0 64912 65019 i
*> 10.8.8.0/24 172.17.90.43 0 150 0 65019 i
* 172.17.90.42 150 0 64912 65019 i
*> 10.9.9.0/24 172.17.90.43 0 150 0 65019 i
* 172.17.90.42 150 0 64912 65019 i
*> 10.10.10.0/24 172.17.90.42 150 0 64912 65025 i
* 172.17.90.43 150 0 65019 65025 i
Network Next Hop Metric LocPrf Weight Path
* 10.11.11.0/24 172.17.90.43 200 0 65019 64912 i
*> 172.17.90.42 0 200 0 64912 i
* 10.12.12.0/24 172.17.90.43 200 0 65019 64912 i
*> 172.17.90.42 0 200 0 64912 i
* 10.13.13.0/24 172.17.90.43 200 0 65019 64912 i
*> 172.17.90.42 0 200 0 64912 i
*> 10.14.14.0/24 0.0.0.0 0 32768 i
*> 10.15.15.0/24 0.0.0.0 0 32768 i
*> 10.16.16.0/24 0.0.0.0 0 32768 i
*> 10.17.17.0/24 172.17.90.43 0 200 0 65019 i
* 172.17.90.42 200 0 64912 65019 i
*> 10.18.18.0/24 172.17.90.43 0 200 0 65019 i
* 172.17.90.42 200 0 64912 65019 i
*> 10.19.19.0/24 172.17.90.43 0 200 0 65019 i
* 172.17.90.42 200 0 64912 65019 i
* 10.20.20.0/24 172.17.90.42 200 0 64912 65019 65025 i
*> 172.17.90.43 200 0 65019 65025 i
Frankfurt sees
Frankfurt#sh ip bgp
BGP table version is 114, local router ID is 10.20.20.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.1.1.0/24 172.17.90.12 0 200 0 64912 i
* 172.17.90.13 200 0 65019 64912 i
*> 10.2.2.0/24 172.17.90.12 0 200 0 64912 i
* 172.17.90.13 200 0 65019 64912 i
*> 10.3.3.0/24 172.17.90.12 0 200 0 64912 i
* 172.17.90.13 200 0 65019 64912 i
* 10.4.4.0/24 172.17.90.12 200 0 64912 65019 64911 i
*> 172.17.90.13 200 0 65019 64911 i
* 10.5.5.0/24 172.17.90.12 200 0 64912 65019 64911 i
*> 172.17.90.13 200 0 65019 64911 i
* 10.6.6.0/24 172.17.90.12 200 0 64912 65019 64911 i
*> 172.17.90.13 200 0 65019 64911 i
* 10.7.7.0/24 172.17.90.12 200 0 64912 65019 i
*> 172.17.90.13 0 200 0 65019 i
* 10.8.8.0/24 172.17.90.12 200 0 64912 65019 i
*> 172.17.90.13 0 200 0 65019 i
* 10.9.9.0/24 172.17.90.12 200 0 64912 65019 i
Network Next Hop Metric LocPrf Weight Path
*> 172.17.90.13 0 200 0 65019 i
*> 10.10.10.0/24 0.0.0.0 0 32768 i
*> 10.11.11.0/24 172.17.90.12 0 150 0 64912 i
* 172.17.90.13 150 0 65019 64912 i
*> 10.12.12.0/24 172.17.90.12 0 150 0 64912 i
* 172.17.90.13 150 0 65019 64912 i
*> 10.13.13.0/24 172.17.90.12 0 150 0 64912 i
* 172.17.90.13 150 0 65019 64912 i
*> 10.14.14.0/24 172.17.90.12 150 0 64912 64911 i
* 172.17.90.13 150 0 65019 64911 i
*> 10.15.15.0/24 172.17.90.12 150 0 64912 64911 i
* 172.17.90.13 150 0 65019 64911 i
*> 10.16.16.0/24 172.17.90.12 150 0 64912 64911 i
* 172.17.90.13 150 0 65019 64911 i
* 10.17.17.0/24 172.17.90.12 150 0 64912 65019 i
*> 172.17.90.13 0 150 0 65019 i
* 10.18.18.0/24 172.17.90.12 150 0 64912 65019 i
*> 172.17.90.13 0 150 0 65019 i
* 10.19.19.0/24 172.17.90.12 150 0 64912 65019 i
*> 172.17.90.13 0 150 0 65019 i
*> 10.20.20.0/24 0.0.0.0 0 32768 i
CLO sees
CLO#sh ip bgp
BGP table version is 80, local router ID is 10.13.13.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.1.1.0/24 0.0.0.0 0 32768 i
*> 10.2.2.0/24 0.0.0.0 0 32768 i
*> 10.3.3.0/24 0.0.0.0 0 32768 i
* 10.4.4.0/24 172.17.90.15 200 0 65025 65019 64911 i
*> 172.17.90.13 200 0 65019 64911 i
* 172.17.90.43 150 0 65019 64911 i
* 172.17.90.41 0 150 0 64911 i
* 10.5.5.0/24 172.17.90.15 200 0 65025 65019 64911 i
*> 172.17.90.13 200 0 65019 64911 i
* 172.17.90.43 150 0 65019 64911 i
* 172.17.90.41 0 150 0 64911 i
* 10.6.6.0/24 172.17.90.15 200 0 65025 65019 64911 i
*> 172.17.90.13 200 0 65019 64911 i
* 172.17.90.43 150 0 65019 64911 i
* 172.17.90.41 0 150 0 64911 i
* 10.7.7.0/24 172.17.90.15 200 0 65025 65019 i
* 172.17.90.41 150 0 64911 65019 i
Network Next Hop Metric LocPrf Weight Path
* 172.17.90.43 0 150 0 65019 i
*> 172.17.90.13 0 200 0 65019 i
* 10.8.8.0/24 172.17.90.15 200 0 65025 65019 i
* 172.17.90.41 150 0 64911 65019 i
* 172.17.90.43 0 150 0 65019 i
*> 172.17.90.13 0 200 0 65019 i
* 10.9.9.0/24 172.17.90.15 200 0 65025 65019 i
* 172.17.90.41 150 0 64911 65019 i
* 172.17.90.43 0 150 0 65019 i
*> 172.17.90.13 0 200 0 65019 i
*> 10.10.10.0/24 172.17.90.15 0 200 0 65025 i
* 172.17.90.43 150 0 65019 65025 i
* 172.17.90.13 200 0 65019 65025 i
*> 10.11.11.0/24 0.0.0.0 0 32768 i
*> 10.12.12.0/24 0.0.0.0 0 32768 i
*> 10.13.13.0/24 0.0.0.0 0 32768 i
* 10.14.14.0/24 172.17.90.43 200 0 65019 64911 i
* 172.17.90.13 150 0 65019 64911 i
*> 172.17.90.41 0 200 0 64911 i
* 10.15.15.0/24 172.17.90.43 200 0 65019 64911 i
* 172.17.90.13 150 0 65019 64911 i
*> 172.17.90.41 0 200 0 64911 i
Network Next Hop Metric LocPrf Weight Path
* 10.16.16.0/24 172.17.90.43 200 0 65019 64911 i
* 172.17.90.13 150 0 65019 64911 i
*> 172.17.90.41 0 200 0 64911 i
* 10.17.17.0/24 172.17.90.15 150 0 65025 65019 i
* 172.17.90.41 200 0 64911 65019 i
*> 172.17.90.43 0 200 0 65019 i
* 172.17.90.13 0 150 0 65019 i
* 10.18.18.0/24 172.17.90.15 150 0 65025 65019 i
* 172.17.90.41 200 0 64911 65019 i
*> 172.17.90.43 0 200 0 65019 i
* 172.17.90.13 0 150 0 65019 i
* 10.19.19.0/24 172.17.90.15 150 0 65025 65019 i
* 172.17.90.41 200 0 64911 65019 i
*> 172.17.90.43 0 200 0 65019 i
* 172.17.90.13 0 150 0 65019 i
* 10.20.20.0/24 172.17.90.41 200 0 64911 65019 65025 i
*> 172.17.90.43 200 0 65019 65025 i
* 172.17.90.13 150 0 65019 65025 i
* 172.17.90.15 0 150 0 65025 i
CLO#ping 20.20.20.1
London see
London#sh ip bgp
BGP table version is 123, local router ID is 10.19.19.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
* 10.1.1.0/24 172.17.90.15 200 0 65025 64912 i
* 172.17.90.41 150 0 64911 64912 i
* 172.17.90.42 0 150 0 64912 i
*> 172.17.90.12 0 200 0 64912 i
* 10.2.2.0/24 172.17.90.15 200 0 65025 64912 i
* 172.17.90.41 150 0 64911 64912 i
* 172.17.90.42 0 150 0 64912 i
*> 172.17.90.12 0 200 0 64912 i
* 10.3.3.0/24 172.17.90.15 200 0 65025 64912 i
* 172.17.90.41 150 0 64911 64912 i
* 172.17.90.42 0 150 0 64912 i
*> 172.17.90.12 0 200 0 64912 i
*> 10.4.4.0/24 172.17.90.41 0 150 0 64911 i
*> 10.5.5.0/24 172.17.90.41 0 150 0 64911 i
*> 10.6.6.0/24 172.17.90.41 0 150 0 64911 i
*> 10.7.7.0/24 0.0.0.0 0 32768 i
*> 10.8.8.0/24 0.0.0.0 0 32768 i
Network Next Hop Metric LocPrf Weight Path
*> 10.9.9.0/24 0.0.0.0 0 32768 i
* 10.10.10.0/24 172.17.90.41 150 0 64911 64912 65025 i
*> 172.17.90.15 0 200 0 65025 i
* 172.17.90.42 150 0 64912 65025 i
* 172.17.90.12 200 0 64912 65025 i
* 10.11.11.0/24 172.17.90.41 200 0 64911 64912 i
* 172.17.90.15 150 0 65025 64912 i
*> 172.17.90.42 0 200 0 64912 i
* 172.17.90.12 0 150 0 64912 i
* 10.12.12.0/24 172.17.90.41 200 0 64911 64912 i
* 172.17.90.15 150 0 65025 64912 i
*> 172.17.90.42 0 200 0 64912 i
* 172.17.90.12 0 150 0 64912 i
* 10.13.13.0/24 172.17.90.41 200 0 64911 64912 i
* 172.17.90.15 150 0 65025 64912 i
*> 172.17.90.42 0 200 0 64912 i
* 172.17.90.12 0 150 0 64912 i
*> 10.14.14.0/24 172.17.90.41 0 200 0 64911 i
* 172.17.90.15 150 0 65025 64912 64911 i
* 172.17.90.42 200 0 64912 64911 i
* 172.17.90.12 150 0 64912 64911 i
*> 10.15.15.0/24 172.17.90.41 0 200 0 64911 i
Network Next Hop Metric LocPrf Weight Path
* 172.17.90.15 150 0 65025 64912 64911 i
* 172.17.90.42 200 0 64912 64911 i
* 172.17.90.12 150 0 64912 64911 i
*> 10.16.16.0/24 172.17.90.41 0 200 0 64911 i
* 172.17.90.15 150 0 65025 64912 64911 i
* 172.17.90.42 200 0 64912 64911 i
* 172.17.90.12 150 0 64912 64911 i
*> 10.17.17.0/24 0.0.0.0 0 32768 i
*> 10.18.18.0/24 0.0.0.0 0 32768 i
*> 10.19.19.0/24 0.0.0.0 0 32768 i
*> 10.20.20.0/24 172.17.90.15 0 150 0 65025 i
Configs: CIX
CIX#sh run
Building configuration...
Current configuration : 5104 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname CIX
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
!
multilink bundle-name authenticated
!
interface Loopback4
ip address 10.4.4.1 255.255.255.0
!
interface Loopback5
ip address 10.5.5.1 255.255.255.0
!
interface Loopback6
ip address 10.6.6.1 255.255.255.0
!
interface Loopback14
ip address 10.14.14.1 255.255.255.0
!
interface Loopback15
ip address 10.15.15.1 255.255.255.0
!
interface Loopback16
ip address 10.16.16.1 255.255.255.0
!
interface FastEthernet0/0
ip address 172.17.90.11 255.255.255.224
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 172.17.90.41 255.255.255.224
duplex auto
speed auto
!
interface FastEthernet1/0
no ip address
shutdown
duplex auto
speed auto
!
router bgp 64911
bgp log-neighbor-changes
neighbor BT_VPLS peer-group
neighbor BT_VPLS timers 6 20
neighbor COLT_VPLS peer-group
neighbor COLT_VPLS timers 6 20
neighbor 172.17.90.12 remote-as 64912
neighbor 172.17.90.12 peer-group BT_VPLS
neighbor 172.17.90.12 description EBGP with CIXlonakilty
neighbor 172.17.90.13 remote-as 65019
neighbor 172.17.90.13 peer-group BT_VPLS
neighbor 172.17.90.13 description EBGP with London
neighbor 172.17.90.15 remote-as 65025
neighbor 172.17.90.15 peer-group BT_VPLS
neighbor 172.17.90.15 description EBGP with Frankfurt
neighbor 172.17.90.42 remote-as 64912
neighbor 172.17.90.42 peer-group COLT_VPLS
neighbor 172.17.90.42 description EBGP with CIX
neighbor 172.17.90.43 remote-as 65019
neighbor 172.17.90.43 peer-group COLT_VPLS
neighbor 172.17.90.43 description EBGP with London
neighbor 172.17.90.45 remote-as 65025
neighbor 172.17.90.45 peer-group COLT_VPLS
neighbor 172.17.90.45 description EBGP with Frankfurt
!
address-family ipv4
neighbor BT_VPLS next-hop-self
neighbor BT_VPLS soft-reconfiguration inbound
neighbor BT_VPLS route-map BT_VPLS_IN in
neighbor BT_VPLS route-map BT_VPLS_OUT out
neighbor COLT_VPLS next-hop-self
neighbor COLT_VPLS soft-reconfiguration inbound
neighbor COLT_VPLS route-map COLT_VPLS_IN in
neighbor COLT_VPLS route-map COLT_VPLS_OUT out
neighbor 172.17.90.12 activate
neighbor 172.17.90.13 activate
neighbor 172.17.90.15 activate
neighbor 172.17.90.42 activate
neighbor 172.17.90.43 activate
neighbor 172.17.90.45 activate
no auto-summary
no synchronization
network 10.4.4.0 mask 255.255.255.0
network 10.5.5.0 mask 255.255.255.0
network 10.6.6.0 mask 255.255.255.0
network 10.14.14.0 mask 255.255.255.0
network 10.15.15.0 mask 255.255.255.0
network 10.16.16.0 mask 255.255.255.0
exit-address-family
!
ip forward-protocol nd
!
!
ip http server
no ip http secure-server
!
!
ip prefix-list BO_CIX_BT seq 10 permit 10.4.4.0/24
ip prefix-list BO_CIX_BT seq 20 permit 10.5.5.0/24
ip prefix-list BO_CIX_BT seq 30 permit 10.6.6.0/24
!
ip prefix-list BO_CIX_COLT seq 10 permit 10.14.14.0/24
ip prefix-list BO_CIX_COLT seq 20 permit 10.15.15.0/24
ip prefix-list BO_CIX_COLT seq 30 permit 10.16.16.0/24
!
ip prefix-list BT_VPLS_ROUTES seq 10 permit 10.1.1.0/24
ip prefix-list BT_VPLS_ROUTES seq 20 permit 10.2.2.0/24
ip prefix-list BT_VPLS_ROUTES seq 30 permit 10.3.3.0/24
ip prefix-list BT_VPLS_ROUTES seq 40 permit 10.7.7.0/24
ip prefix-list BT_VPLS_ROUTES seq 50 permit 10.8.8.0/24
ip prefix-list BT_VPLS_ROUTES seq 60 permit 10.9.9.0/24
ip prefix-list BT_VPLS_ROUTES seq 70 permit 10.10.10.0/24
!
ip prefix-list COLT_VPLS_ROUTES seq 10 permit 10.11.11.0/24
ip prefix-list COLT_VPLS_ROUTES seq 20 permit 10.12.12.0/24
ip prefix-list COLT_VPLS_ROUTES seq 30 permit 10.13.13.0/24
ip prefix-list COLT_VPLS_ROUTES seq 40 permit 10.17.17.0/24
ip prefix-list COLT_VPLS_ROUTES seq 50 permit 10.18.18.0/24
ip prefix-list COLT_VPLS_ROUTES seq 60 permit 10.19.19.0/24
ip prefix-list COLT_VPLS_ROUTES seq 70 permit 10.20.20.0/24
!
!
!
route-map BT_VPLS_IN permit 10
match ip address prefix-list BT_VPLS_ROUTES
set local-preference 200
!
route-map BT_VPLS_IN permit 20
match ip address prefix-list COLT_VPLS_ROUTES
set local-preference 150
!
route-map BT_VPLS_IN deny 30
description block all other advertisements
!
route-map COLT_VPLS_IN permit 10
match ip address prefix-list COLT_VPLS_ROUTES
set local-preference 200
!
route-map COLT_VPLS_IN permit 20
match ip address prefix-list BT_VPLS_ROUTES
set local-preference 150
!
route-map COLT_VPLS_IN deny 30
description block all other advertisements
!
route-map BT_VPLS_OUT permit 10
match ip address prefix-list BO_CIX_COLT BO_CIX_BT BT_VPLS_ROUTES COLT_VPLS_ROUTES
!
route-map BT_VPLS_OUT deny 20
description block all other advertisements
!
route-map COLT_VPLS_OUT permit 10
match ip address prefix-list BO_CIX_COLT BO_CIX_BT COLT_VPLS_ROUTES BT_VPLS_ROUTES
!
route-map COLT_VPLS_OUT deny 20
description block all other advertisements
!
Configs: Frankfurt
Frankfurt#sh run Building configuration... Current configuration : 4885 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Frankfurt ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 no ip icmp rate-limit unreachable ip cef ! ! ! ! no ip domain lookup ! multilink bundle-name authenticated ! ! ip tcp synwait-time 5 ! ! ! ! interface Loopback10 ip address 10.10.10.1 255.255.255.0 ! interface Loopback20 ip address 10.20.20.1 255.255.255.0 ! interface FastEthernet0/0 ip address 172.17.90.15 255.255.255.224 duplex auto speed auto ! interface FastEthernet0/1 ip address 172.17.90.45 255.255.255.224 shutdown duplex auto speed auto ! router bgp 65025 bgp log-neighbor-changes neighbor COLT_VPLS peer-group neighbor COLT_VPLS timers 6 20 neighbor BT_VPLS peer-group neighbor BT_VPLS timers 6 20 neighbor 172.17.90.11 remote-as 64911 neighbor 172.17.90.11 peer-group BT_VPLS neighbor 172.17.90.11 description EBGP with CIX neighbor 172.17.90.12 remote-as 64912 neighbor 172.17.90.12 peer-group BT_VPLS neighbor 172.17.90.12 description EBGP with CLO neighbor 172.17.90.13 remote-as 65019 neighbor 172.17.90.13 peer-group BT_VPLS neighbor 172.17.90.13 description EBGP with London neighbor 172.17.90.41 remote-as 64911 neighbor 172.17.90.41 peer-group COLT_VPLS neighbor 172.17.90.41 description EBGP with CIX neighbor 172.17.90.42 remote-as 64912 neighbor 172.17.90.42 peer-group COLT_VPLS neighbor 172.17.90.42 description EBGP with CLO neighbor 172.17.90.43 remote-as 65019 neighbor 172.17.90.43 peer-group COLT_VPLS neighbor 172.17.90.43 description EBGP with London maximum-paths 2 ! address-family ipv4 neighbor COLT_VPLS next-hop-self neighbor COLT_VPLS soft-reconfiguration inbound neighbor COLT_VPLS route-map COLT_VPLS_IN in neighbor COLT_VPLS route-map COLT_VPLS_OUT out neighbor BT_VPLS next-hop-self neighbor BT_VPLS soft-reconfiguration inbound neighbor BT_VPLS route-map BT_VPLS_IN in neighbor BT_VPLS route-map BT_VPLS_OUT out neighbor 172.17.90.11 activate neighbor 172.17.90.12 activate neighbor 172.17.90.13 activate neighbor 172.17.90.41 activate neighbor 172.17.90.42 activate neighbor 172.17.90.43 activate maximum-paths 2 no auto-summary no synchronization network 10.10.10.0 mask 255.255.255.0 network 10.20.20.0 mask 255.255.255.0 exit-address-family ! ip forward-protocol nd ! ! no ip http server no ip http secure-server ! ! ip prefix-list BO_FRA_BT seq 10 permit 10.10.10.0/24 ! ip prefix-list BO_FRA_COLT seq 10 permit 10.20.20.0/24 ! ip prefix-list BT_VPLS_ROUTES seq 10 permit 10.1.1.0/24 ip prefix-list BT_VPLS_ROUTES seq 20 permit 10.2.2.0/24 ip prefix-list BT_VPLS_ROUTES seq 30 permit 10.3.3.0/24 ip prefix-list BT_VPLS_ROUTES seq 40 permit 10.7.7.0/24 ip prefix-list BT_VPLS_ROUTES seq 50 permit 10.8.8.0/24 ip prefix-list BT_VPLS_ROUTES seq 60 permit 10.9.9.0/24 ip prefix-list BT_VPLS_ROUTES seq 70 permit 10.4.4.0/24 ip prefix-list BT_VPLS_ROUTES seq 80 permit 10.5.5.0/24 ip prefix-list BT_VPLS_ROUTES seq 90 permit 10.6.6.0/24 ! ip prefix-list COLT_VPLS_ROUTES seq 10 permit 10.11.11.0/24 ip prefix-list COLT_VPLS_ROUTES seq 20 permit 10.12.12.0/24 ip prefix-list COLT_VPLS_ROUTES seq 30 permit 10.13.13.0/24 ip prefix-list COLT_VPLS_ROUTES seq 40 permit 10.17.17.0/24 ip prefix-list COLT_VPLS_ROUTES seq 50 permit 10.18.18.0/24 ip prefix-list COLT_VPLS_ROUTES seq 60 permit 10.19.19.0/24 ip prefix-list COLT_VPLS_ROUTES seq 70 permit 10.14.14.0/24 ip prefix-list COLT_VPLS_ROUTES seq 80 permit 10.15.15.0/24 ip prefix-list COLT_VPLS_ROUTES seq 90 permit 10.16.16.0/24 ! ! ! route-map BT_VPLS_IN permit 10 match ip address prefix-list BT_VPLS_ROUTES set local-preference 200 ! route-map BT_VPLS_IN permit 20 match ip address prefix-list COLT_VPLS_ROUTES set local-preference 150 ! route-map BT_VPLS_IN deny 30 description block all other advertisements ! route-map COLT_VPLS_IN permit 10 match ip address prefix-list COLT_VPLS_ROUTES set local-preference 200 ! route-map COLT_VPLS_IN permit 20 match ip address prefix-list BT_VPLS_ROUTES set local-preference 150 ! route-map COLT_VPLS_IN deny 30 description block all other advertisements ! route-map BT_VPLS_OUT permit 10 match ip address prefix-list BO_FRA_BT BO_FRA_COLT BT_VPLS_ROUTES COLT_VPLS_ROUTES ! route-map BT_VPLS_OUT deny 20 description block all other advertisements ! route-map COLT_VPLS_OUT permit 10 match ip address prefix-list BO_FRA_BT BO_FRA_COLT COLT_VPLS_ROUTES BT_VPLS_ROUTES ! route-map COLT_VPLS_OUT deny 20 description block all other advertisements ! !
Config: CLO
CLO#sh run Building configuration... Current configuration : 5120 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname CLO ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ip cef ! ! ! ! ! multilink bundle-name authenticated ! ! interface Loopback1 ip address 10.1.1.1 255.255.255.0 ! interface Loopback2 ip address 10.2.2.1 255.255.255.0 ! interface Loopback3 ip address 10.3.3.1 255.255.255.0 ! interface Loopback11 ip address 10.11.11.1 255.255.255.0 ! interface Loopback12 ip address 10.12.12.1 255.255.255.0 ! interface Loopback13 ip address 10.13.13.1 255.255.255.0 ! interface FastEthernet0/0 ip address 172.17.90.12 255.255.255.224 duplex auto speed auto ! interface FastEthernet0/1 ip address 172.17.90.42 255.255.255.224 duplex auto speed auto ! interface FastEthernet1/0 no ip address duplex auto speed auto ! router bgp 64912 bgp log-neighbor-changes neighbor COLT_VPLS peer-group neighbor COLT_VPLS timers 6 20 neighbor BT_VPLS peer-group neighbor BT_VPLS timers 6 20 neighbor 172.17.90.11 remote-as 64911 neighbor 172.17.90.11 peer-group BT_VPLS neighbor 172.17.90.11 description EBGP with CIX neighbor 172.17.90.13 remote-as 65019 neighbor 172.17.90.13 peer-group BT_VPLS neighbor 172.17.90.13 description EBGP with London neighbor 172.17.90.15 remote-as 65025 neighbor 172.17.90.15 peer-group BT_VPLS neighbor 172.17.90.15 description EBGP with Frankfurt neighbor 172.17.90.41 remote-as 64911 neighbor 172.17.90.41 peer-group COLT_VPLS neighbor 172.17.90.41 description EBGP with CIX neighbor 172.17.90.43 remote-as 65019 neighbor 172.17.90.43 peer-group COLT_VPLS neighbor 172.17.90.43 description EBGP with London neighbor 172.17.90.45 remote-as 65025 neighbor 172.17.90.45 peer-group COLT_VPLS neighbor 172.17.90.45 description EBGP with Frankfurt maximum-paths 2 ! address-family ipv4 neighbor COLT_VPLS next-hop-self neighbor COLT_VPLS soft-reconfiguration inbound neighbor COLT_VPLS route-map COLT_VPLS_IN in neighbor COLT_VPLS route-map COLT_VPLS_OUT out neighbor BT_VPLS next-hop-self neighbor BT_VPLS soft-reconfiguration inbound neighbor BT_VPLS route-map BT_VPLS_IN in neighbor BT_VPLS route-map BT_VPLS_OUT out neighbor 172.17.90.11 activate neighbor 172.17.90.13 activate neighbor 172.17.90.15 activate neighbor 172.17.90.41 activate neighbor 172.17.90.43 activate neighbor 172.17.90.45 activate maximum-paths 2 no auto-summary no synchronization network 10.1.1.0 mask 255.255.255.0 network 10.2.2.0 mask 255.255.255.0 network 10.3.3.0 mask 255.255.255.0 network 10.11.11.0 mask 255.255.255.0 network 10.12.12.0 mask 255.255.255.0 network 10.13.13.0 mask 255.255.255.0 exit-address-family ! ip forward-protocol nd ! ! ip http server no ip http secure-server ! ! ip prefix-list BO_CLON_BT seq 10 permit 10.1.1.0/24 ip prefix-list BO_CLON_BT seq 20 permit 10.2.2.0/24 ip prefix-list BO_CLON_BT seq 30 permit 10.3.3.0/24 ! ip prefix-list BO_CLON_COLT seq 10 permit 10.11.11.0/24 ip prefix-list BO_CLON_COLT seq 20 permit 10.12.12.0/24 ip prefix-list BO_CLON_COLT seq 30 permit 10.13.13.0/24 ! ip prefix-list BT_VPLS_ROUTES seq 10 permit 10.4.4.0/24 ip prefix-list BT_VPLS_ROUTES seq 20 permit 10.5.5.0/24 ip prefix-list BT_VPLS_ROUTES seq 30 permit 10.6.6.0/24 ip prefix-list BT_VPLS_ROUTES seq 40 permit 10.7.7.0/24 ip prefix-list BT_VPLS_ROUTES seq 50 permit 10.8.8.0/24 ip prefix-list BT_VPLS_ROUTES seq 60 permit 10.9.9.0/24 ip prefix-list BT_VPLS_ROUTES seq 70 permit 10.10.10.0/24 ! ip prefix-list COLT_VPLS_ROUTES seq 10 permit 10.14.14.0/24 ip prefix-list COLT_VPLS_ROUTES seq 20 permit 10.15.15.0/24 ip prefix-list COLT_VPLS_ROUTES seq 30 permit 10.16.16.0/24 ip prefix-list COLT_VPLS_ROUTES seq 40 permit 10.17.17.0/24 ip prefix-list COLT_VPLS_ROUTES seq 50 permit 10.18.18.0/24 ip prefix-list COLT_VPLS_ROUTES seq 60 permit 10.19.19.0/24 ip prefix-list COLT_VPLS_ROUTES seq 70 permit 10.20.20.0/24 ! ! ! route-map BT_VPLS_IN permit 10 match ip address prefix-list BT_VPLS_ROUTES set local-preference 200 ! route-map BT_VPLS_IN permit 20 match ip address prefix-list COLT_VPLS_ROUTES set local-preference 150 ! route-map BT_VPLS_IN deny 30 description block all other advertisements ! route-map COLT_VPLS_IN permit 10 match ip address prefix-list COLT_VPLS_ROUTES set local-preference 200 ! route-map COLT_VPLS_IN permit 20 match ip address prefix-list BT_VPLS_ROUTES set local-preference 150 ! route-map COLT_VPLS_IN deny 30 description block all other advertisements ! route-map BT_VPLS_OUT permit 10 match ip address prefix-list BO_CLON_BT BO_CLON_COLT BT_VPLS_ROUTES COLT_VPLS_ROUTES ! route-map BT_VPLS_OUT deny 20 description block all other advertisements ! route-map COLT_VPLS_OUT permit 10 match ip address prefix-list BO_CLON_BT BO_CLON_COLT BT_VPLS_ROUTES COLT_VPLS_ROUTES ! route-map COLT_VPLS_OUT deny 20 description block all other advertisements ! !
Config : London
London#sh run Building configuration... Current configuration : 5277 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname London ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 no ip icmp rate-limit unreachable ip cef ! ! ! ! no ip domain lookup ! multilink bundle-name authenticated ! ! ! ip tcp synwait-time 5 ! ! ! ! interface Loopback7 ip address 10.7.7.1 255.255.255.0 ! interface Loopback8 ip address 10.8.8.1 255.255.255.0 ! interface Loopback9 ip address 10.9.9.1 255.255.255.0 ! interface Loopback17 ip address 10.17.17.1 255.255.255.0 ! interface Loopback18 ip address 10.18.18.1 255.255.255.0 ! interface Loopback19 ip address 10.19.19.1 255.255.255.0 ! interface FastEthernet0/0 ip address 172.17.90.13 255.255.255.224 duplex auto speed auto ! interface FastEthernet0/1 ip address 172.17.90.43 255.255.255.224 duplex auto speed auto ! router bgp 65019 bgp log-neighbor-changes neighbor COLT_VPLS peer-group neighbor COLT_VPLS timers 6 20 neighbor BT_VPLS peer-group neighbor BT_VPLS timers 6 20 neighbor 172.17.90.11 remote-as 64911 neighbor 172.17.90.11 peer-group BT_VPLS neighbor 172.17.90.11 description EBGP with CIX neighbor 172.17.90.12 remote-as 64912 neighbor 172.17.90.12 peer-group BT_VPLS neighbor 172.17.90.12 description EBGP with Clonakilty neighbor 172.17.90.15 remote-as 65025 neighbor 172.17.90.15 peer-group BT_VPLS neighbor 172.17.90.15 description EBGP with Frankfurt neighbor 172.17.90.41 remote-as 64911 neighbor 172.17.90.41 peer-group COLT_VPLS neighbor 172.17.90.41 description EBGP with CIX neighbor 172.17.90.42 remote-as 64912 neighbor 172.17.90.42 peer-group COLT_VPLS neighbor 172.17.90.42 description EBGP with Clonakilty neighbor 172.17.90.45 remote-as 65025 neighbor 172.17.90.45 peer-group COLT_VPLS neighbor 172.17.90.45 description EBGP with Frankfurt maximum-paths 2 ! address-family ipv4 neighbor COLT_VPLS next-hop-self neighbor COLT_VPLS soft-reconfiguration inbound neighbor COLT_VPLS route-map COLT_VPLS_IN in neighbor COLT_VPLS route-map COLT_VPLS_OUT out neighbor BT_VPLS next-hop-self neighbor BT_VPLS soft-reconfiguration inbound neighbor BT_VPLS route-map BT_VPLS_IN in neighbor BT_VPLS route-map BT_VPLS_OUT out neighbor 172.17.90.11 activate neighbor 172.17.90.12 activate neighbor 172.17.90.15 activate neighbor 172.17.90.41 activate neighbor 172.17.90.42 activate neighbor 172.17.90.45 activate maximum-paths 2 no auto-summary no synchronization network 10.7.7.0 mask 255.255.255.0 network 10.8.8.0 mask 255.255.255.0 network 10.9.9.0 mask 255.255.255.0 network 10.17.17.0 mask 255.255.255.0 network 10.18.18.0 mask 255.255.255.0 network 10.19.19.0 mask 255.255.255.0 exit-address-family ! ip forward-protocol nd ! ! ip http server no ip http secure-server ! ! ip prefix-list BO_LONDON_BT seq 10 permit 10.7.7.0/24 ip prefix-list BO_LONDON_BT seq 20 permit 10.8.8.0/24 ip prefix-list BO_LONDON_BT seq 30 permit 10.9.9.0/24 ! ip prefix-list BO_LONDON_COLT seq 10 permit 10.17.17.0/24 ip prefix-list BO_LONDON_COLT seq 20 permit 10.18.18.0/24 ip prefix-list BO_LONDON_COLT seq 30 permit 10.19.19.0/24 ! ip prefix-list BT_VPLS_ROUTES seq 10 permit 10.1.1.0/24 ip prefix-list BT_VPLS_ROUTES seq 20 permit 10.2.2.0/24 ip prefix-list BT_VPLS_ROUTES seq 30 permit 10.3.3.0/24 ip prefix-list BT_VPLS_ROUTES seq 40 permit 10.4.4.0/24 ip prefix-list BT_VPLS_ROUTES seq 50 permit 10.5.5.0/24 ip prefix-list BT_VPLS_ROUTES seq 60 permit 10.6.6.0/24 ip prefix-list BT_VPLS_ROUTES seq 70 permit 10.10.10.0/24 ! ip prefix-list COLT_VPLS_ROUTES seq 10 permit 10.11.11.0/24 ip prefix-list COLT_VPLS_ROUTES seq 20 permit 10.12.12.0/24 ip prefix-list COLT_VPLS_ROUTES seq 30 permit 10.13.13.0/24 ip prefix-list COLT_VPLS_ROUTES seq 40 permit 10.14.14.0/24 ip prefix-list COLT_VPLS_ROUTES seq 50 permit 10.15.15.0/24 ip prefix-list COLT_VPLS_ROUTES seq 60 permit 10.16.16.0/24 ip prefix-list COLT_VPLS_ROUTES seq 70 permit 10.20.20.0/24 ! ! ! route-map BT_VPLS_IN permit 10 match ip address prefix-list BT_VPLS_ROUTES set local-preference 200 ! route-map BT_VPLS_IN permit 20 match ip address prefix-list COLT_VPLS_ROUTES set local-preference 150 ! route-map BT_VPLS_IN deny 30 description block all other advertisements ! route-map COLT_VPLS_IN permit 10 match ip address prefix-list COLT_VPLS_ROUTES set local-preference 200 ! route-map COLT_VPLS_IN permit 20 match ip address prefix-list BT_VPLS_ROUTES set local-preference 150 ! route-map COLT_VPLS_IN deny 30 description block all other advertisements ! route-map BT_VPLS_OUT permit 10 match ip address prefix-list BO_LONDON_COLT BO_LONDON_BT BT_VPLS_ROUTES COLT_VPLS_ROUTES ! route-map BT_VPLS_OUT deny 20 description block all other advertisements ! route-map COLT_VPLS_OUT permit 10 match ip address prefix-list BO_LONDON_COLT BO_LONDON_BT COLT_VPLS_ROUTES BT_VPLS_ROUTES ! route-map COLT_VPLS_OUT deny 20 description block all other advertisements ! !
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11-13-2014 06:28 AM
Hello.
I'm not sure what is the issue with pings - please provide traces between the devices for troubleshooting.
To prefer one way over another without sticking to preference per cloud, you could use as-path prepend: when you announce orange prefix over Carrier B, or Blue prefix over Carrier A, prepend twice.
In this case you won't need any LP manipulation.
In this case you won't need list of prefixes per router, because prepend should be done on originating router only.
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11-13-2014 06:28 AM
Hello.
I'm not sure what is the issue with pings - please provide traces between the devices for troubleshooting.
To prefer one way over another without sticking to preference per cloud, you could use as-path prepend: when you announce orange prefix over Carrier B, or Blue prefix over Carrier A, prepend twice.
In this case you won't need any LP manipulation.
In this case you won't need list of prefixes per router, because prepend should be done on originating router only.
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11-14-2014 06:17 AM
Hi Vasilii,
The ping was my mistake,
Changed to outbound AS-Path Prepend. That seems to do the trick
thanks
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