Re: MPLS TE and ISIS

Hi Aamir,

Isn't your problem that the TE tunnel spans more than one area (either
level-1 or level-2) in the one case?

-Rich

On Wed, Dec 1, 2010 at 4:34 PM, Aamir Aziz <aamiraz77_at_gmail.com> wrote:
> Dear all,
>
> I have an interesting issue here with MPLS TE and ISIS. I have four
> routers, R1, R2, R3 and R4.
>
> R1-------R2-------R3---------R4
>
> R1 and R2 are in ISIS level 1 (router isis)
> R2 and R3 are in ISIS level 2 (router isis SECOND)
> R3 and R4 are in ISIS level 1 (router isis)
>
> i have created tunnel on R1 with explicit path:
>
> R1->R2->R3->R4
>
> I have redistributed the connected link between R2 and R3 from ISIS
> level 2 SECOND (router isis SECOND) into ISIS level 1 (router isis)
> which is working fine and on R1 and R4 i get that connected (x.x.23.0)
> link as iL1. The issue is tunnel is up and down.
>
> But as soon as i put the connected link between R2 and R3 (interface
> FastEthernet0/0.23) in ISIS level 1 (router isis) tunnel is up up and
> it works fine. Any idea why it was not working before?
>
> here are the configs:
>
> R1:
>
> tinterface Tunnel10
> ip unnumbered Loopback0
> tunnel destination x.x.x.4
> tunnel mode mpls traffic-eng
> tunnel mpls traffic-eng autoroute announce
> tunnel mpls traffic-eng priority 0 0
> tunnel mpls traffic-eng bandwidth 2000
> tunnel mpls traffic-eng path-option 1 explicit name CISCO
>
> router isis
> net x.x.x.x
> is-type level-1
> metric-style wide
> mpls traffic-eng router-id Loopback0
> mpls traffic-eng level-1
>
> R2:
>
> router isis
> net x.x.x.x
> is-type level-1
> metric-style wide
> redistribute connected route-map CONN level-1
> mpls traffic-eng router-id Loopback0
> mpls traffic-eng level-1
>
> router isis SECOND
> net x.x.x.x
> is-type level-2-only
> metric-style wide
> mpls traffic-eng router-id Loopback1
> mpls traffic-eng level-2
>
> interface FastEthernet0/0.23
> encapsulation dot1Q 23
> ip address x.x.23.2 255.255.255.0
> ip router isis SECOND
> mpls traffic-eng tunnels
> mpls ip
> ip rsvp bandwidth 20000
>
> ip access-list standard CONN
> permit x.x.23.0
>
> route-map CONN permit 10
> match ip address CONN
>
> R3:
>
> router isis
> net x.x.x.x
> is-type level-1
> metric-style wide
> redistribute connected route-map CONN level-1
> mpls traffic-eng router-id Loopback0
> mpls traffic-eng level-1
>
> router isis SECOND
> net 49.0010.0000.0000.2222.00
> is-type level-2-only
> metric-style wide
> mpls traffic-eng router-id Loopback1
> mpls traffic-eng level-2
>
> interface FastEthernet0/0.23
> encapsulation dot1Q 23
> ip address x.x.23.3 255.255.255.0
> ip router isis SECOND
> mpls traffic-eng tunnels
> mpls ip
> ip rsvp bandwidth 20000
>
> ip access-list standard CONN
> permit x.x.23.0
>
> route-map CONN permit 10
> match ip address CONN
>
>
> thanks,
> Aamir
>
>
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Received on Thu Dec 02 2010 - 17:53:09 ART