[c-nsp] MPLS TE

Christian Meutes christian at errxtx.net
Thu Dec 20 08:13:16 EST 2012


Still missing relevant informations, but I guess you miss the backup-path TE configuration on your protecting core interfaces.

On 20.12.2012, at 19:38, M K <gunner_200 at live.com> wrote:

> 
> R2
> router isis 1
> net 49.0001.0000.0000.0002.00
> is-type level-2-only
> metric-style wide
> passive-interface Loopback0
> mpls traffic-eng router-id Loopback0
> mpls traffic-eng level-2
> 
> R2#sh run | sec router bgp
> router bgp 100
> bgp log-neighbor-changes
> no bgp default ipv4-unicast
> neighbor 4.4.4.4 remote-as 100
> neighbor 4.4.4.4 update-source Loopback0
> !
> address-family ipv4
> exit-address-family
> !
> address-family vpnv4
>  neighbor 4.4.4.4 activate
>  neighbor 4.4.4.4 send-community both
> exit-address-family
> !
> address-family ipv4 vrf MSSK
>  network 1.1.1.1 mask 255.255.255.255
>  network 192.1.12.0
> exit-address-family
> 
> R4
> router isis 1
> net 49.0001.0000.0000.0004.00
> is-type level-2-only
> metric-style wide
> passive-interface Loopback0
> mpls traffic-eng router-id Loopback0
> mpls traffic-eng level-2
> 
> R4#sh run | sec router bgp
> router bgp 100
> bgp log-neighbor-changes
> no bgp default ipv4-unicast
> neighbor 2.2.2.2 remote-as 100
> neighbor 2.2.2.2 update-source Loopback0
> !
> address-family ipv4
> exit-address-family
> !
> address-family vpnv4
>  neighbor 2.2.2.2 activate
>  neighbor 2.2.2.2 send-community both
> exit-address-family
> !
> address-family ipv4 vrf MSSK
>  network 6.6.6.6 mask 255.255.255.255
>  network 192.1.46.0
> exit-address-family
> 
> R2#sh mpls traffic-eng tunnels summary 
> Signalling  Summary:
>    LSP Tunnels Process:            running
>    Passive LSP Listener:           running
>    RSVP Process:                   running
>    Forwarding:                     enabled
>    Periodic reoptimization:        every 3600 seconds, next in 2998 seconds
>    Periodic FRR Promotion:         Not Running
>    Periodic auto-bw collection:    every 300 seconds, next in 298 seconds
>    P2P:
>      Head: 1 interfaces,   1 active signalling attempts, 1 established
>            5 activations,  4 deactivations
>            4703 failed activations
>            0 SSO recovery attempts, 0 SSO recovered
>      Midpoints: 0, Tails: 1
>    P2MP:
>      Head: 0 interfaces,   0 active signalling attempts, 0 established
>            0 sub-LSP activations,  0 sub-LSP deactivations
>            0 LSP successful activations,  0 LSP deactivations
>            0 SSO recovery attempts, LSP recovered: 0 full, 0 partial, 0 fail
>      Midpoints: 0, Tails: 0
> 
> R4#sh mpls traffic-eng tunnels sum
> Signalling  Summary:
>    LSP Tunnels Process:            running
>    Passive LSP Listener:           running
>    RSVP Process:                   running
>    Forwarding:                     enabled
>    Periodic reoptimization:        every 3600 seconds, next in 2995 seconds
>    Periodic FRR Promotion:         Not Running
>    Periodic auto-bw collection:    every 300 seconds, next in 295 seconds
>    P2P:
>      Head: 1 interfaces,   1 active signalling attempts, 1 established
>            5 activations,  4 deactivations
>            4695 failed activations
>            0 SSO recovery attempts, 0 SSO recovered
>      Midpoints: 0, Tails: 1
>    P2MP:
>      Head: 0 interfaces,   0 active signalling attempts, 0 established
>            0 sub-LSP activations,  0 sub-LSP deactivations
>            0 LSP successful activations,  0 LSP deactivations
>            0 SSO recovery attempts, LSP recovered: 0 full, 0 partial, 0 fail
>      Midpoints: 0, Tails: 0
> 
> Now , shutting down R3 connection to R5 inside the MPLS backbone
> 
> R3(config)#int f2/0
> R3(config-if)#shut
> 
> R2# 
> *Dec 20 14:33:26.952: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to down
> 
> R2#sh mpls traffic-eng tunnels summary 
> Signalling  Summary:
>    LSP Tunnels Process:            running
>    Passive LSP Listener:           running
>    RSVP Process:                   running
>    Forwarding:                     enabled
>    Periodic reoptimization:        every 3600 seconds, next in 2904 seconds
>    Periodic FRR Promotion:         Not Running
>    Periodic auto-bw collection:    every 300 seconds, next in 204 seconds
>    P2P:
>      Head: 1 interfaces,   0 active signalling attempts, 0 established
>            6 activations,  6 deactivations
>            4709 failed activations
>            0 SSO recovery attempts, 0 SSO recovered
>      Midpoints: 0, Tails: 1
>    P2MP:
>      Head: 0 interfaces,   0 active signalling attempts, 0 established
>            0 sub-LSP activations,  0 sub-LSP deactivations
>            0 LSP successful activations,  0 LSP deactivations
>            0 SSO recovery attempts, LSP recovered: 0 full, 0 partial, 0 fail
>      Midpoints: 0, Tails: 0
> 
> BR,
> 
> 
>> CC: cisco-nsp at puck.nether.net
>> From: cozzupj at gmail.com
>> Subject: Re: [c-nsp] MPLS TE
>> Date: Thu, 20 Dec 2012 21:22:18 +1100
>> To: gunner_200 at live.com
>> 
>> Hi,
>> 
>> Please post all of your configurations and not just the Tunnels, plus the usual TE verification show commands such as "show mpls traffic-eng tunnels", "show mpls traffic-eng topology" 
>> 
>> Cheers,
>> Joe
>> 
>> Sent from my iPhone
>> 
>> On 20/12/2012, at 21:05, M K <gunner_200 at live.com> wrote:
>> 
>>> 
>>> Hi all
>>> I have configured MPLS TE with RSVP using ISIS inside the MPLS core
>>> R2 and R4 are my PE routers
>>> 
>>> R2#sh run int tun0
>>> Building configuration...
>>> Current configuration : 259 bytes
>>> !
>>> interface Tunnel0
>>> ip unnumbered Loopback0
>>> tunnel mode mpls traffic-eng
>>> tunnel destination 4.4.4.4
>>> tunnel mpls traffic-eng autoroute announce
>>> tunnel mpls traffic-eng path-option 1 explicit name PATH
>>> tunnel mpls traffic-eng path-option 2 dynamic 
>>> end
>>> 
>>> R4#sh run int tun 0
>>> Building configuration...
>>> Current configuration : 259 bytes
>>> !
>>> interface Tunnel0
>>> ip unnumbered Loopback0
>>> tunnel mode mpls traffic-eng
>>> tunnel destination 2.2.2.2
>>> tunnel mpls traffic-eng autoroute announce
>>> tunnel mpls traffic-eng path-option 1 explicit name PATH
>>> tunnel mpls traffic-eng path-option 2 dynamic 
>>> end
>>> 
>>> Now , the explicit path is working fine , when I shutdown one of the links across the MPLS backbone , the tunnel interfaces become up again due to the dynamic path configured under the tunnel interface
>>> Now , when I remove the dynamic and configure FRR instead , the tunnel interface keep in the down state (it's line protocol)
>>> tunnel mpls traffic-eng fast-reroute bw-protect
>>> 
>>> Am i missing something ?
>>> 
>>> BR,
>>> 
>>> _______________________________________________
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>                         
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