RE: MPLS Traffic-Engineering Dynamic Tunnel

I have seen this many many times before.

Do me a favour and remove the bandwidth statements on both tunnel
interfaces. Then see if it comes up.

The main cause from past experience is that somewhere along the path
there is not enough bandwidth available on a link for RSVP to create the
path. Sometimes a simple solution is removing the RSVP reservation off
and interface and re-adding it.

Also from your configs I don't see the metric-style wide command under
ISIS on some routers. You say it's there so I will take your word for
it.

Try what I suggested and let us know.

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Bryan Bartik
Sent: Friday, October 30, 2009 7:43 PM
To: Shawn Zandi
Cc: armylegionmedic_at_aol.com; nilsi2002_at_gmail.com; divinjohn_at_gmail.com;
vsrinivas.paturi_at_gmail.com; ccielab_at_groupstudy.com
Subject: Re: MPLS Traffic-Engineering Dynamic Tunnel

"No path to destination" can be misleading because it does not really
mean
there is no route. It just means it cannot calculate a path that meets
the
requirements of the tunnel. I am curious to see the full configs as well
as
"show mpls traffic-eng topology."

On Fri, Oct 30, 2009 at 9:29 AM, Shawn Zandi <szmetal_at_gmail.com> wrote:

> Army,
> Last Error: PCALC:: No path to destination, 0000.0000.0008.00
> Last Error: PCALC:: No path to destination, 0000.0000.0009.00
>
> R8 does not have route to loopback of R9, and R9 does not have route
to
> loopback of R8. Enable ISIS on loopbacks by "ip router isis" or change
your
> TE router-ID to reachable ones.
>
> --
> Sincerely,
> Shawn Zandi
> Network Architect and Consultant
> Cisco Certified CCIE x2 (R&S, Security)
> Juniper, Foundry, Brocade and Procurve Certified
>
> http://blog.shafagh.com
>
>
>
> On Fri, Oct 30, 2009 at 6:45 PM, <armylegionmedic_at_aol.com> wrote:
>
> > Hello Rich,
> >
> >
> > Thank you very much for the response. The command metric-style
wide is
> > in
> > all the routers. When I type the command mpls traffic-eng level-* it
will
> > always tell me if there is no metric-style wide initiated. I have
also
> gone
> > through and checked all the routers.
> >
> >
> > Regards,
> >
> >
> > James
> >
> >
> > -----Original Message-----
> > From: Rich Collins <nilsi2002_at_gmail.com>
> > To: Divin Mathew John <divinjohn_at_gmail.com>
> > Cc: srinivas pv <vsrinivas.paturi_at_gmail.com>;
armylegionmedic_at_aol.com;
> > ccielab_at_groupstudy.com
> > Sent: Fri, Oct 30, 2009 7:07 am
> > Subject: Re: MPLS Traffic-Engineering Dynamic Tunnel
> >
> >
> >
> >
> >
> >
> >
> >
> > Hi,
> >
> > Your problem is that all isis router instances should be
metric-style
> > wide for traffic engineering.
> >
> > If you do a show ip route isis you are probably missing some
> > destinations (for the same above reason).
> >
> > -Rich
> >
> >
> >
> >
> > > On Fri, Oct 30, 2009 at 9:00 AM, srinivas pv
> > <vsrinivas.paturi_at_gmail.com>wrote:
> > >
> > >> Hi,
> > >>
> > >> You are getting following error:
> > >> Path Option 10:
> > >> Last Error: PCALC:: No path to destination, 0000.0000.0008.00
> > >>
> > >> You can check why you are getting this.
> > >> Can you give following show outputs from both R8 and R9
> > >>
> > >> show mpls traffic-eng topology brief
> > >> show mpls traffic-eng tunnels topology path destination <tunnel
dest
> > addr>
> > >> show mpls traffic-eng tunnels topology path destination <tunnel
dest
> > addr>
> > >> bandwidth
> > >> show mpls traffic-eng tunnels topology path destination <tunnel
dest
> > addr>
> > >> priority
> > >> show mpls traffic-eng tunnels topology path tunnel89
> > >> show mpls traffic-eng tunnels topology path tunnel89 bandwidth
> > >> show mpls traffic-eng tunnels topology path tunnel89 priority
> > >>
> > >>
> > >> Thanks,
> > >> Srinivas
> > >>
> > >>
> > >> On Fri, Oct 30, 2009 at 6:12 AM, <armylegionmedic_at_aol.com> wrote:
> > >>
> > >> > Hello Experts,
> > >> >
> > >> > I have been troubleshooting this for like 2 hours now and
just
> > cannot
> > >> see
> > >> > what is wrong. I have read through the IPExpert article and
tried
> the
> > >> auto
> > >> > bw
> > >> > commands and it made no difference. Also, I am able to ping
> perfectly
> > >> fine.
> > >> > I
> > >> > am trying to go R8-R2-R7-R9 and reverse path back, but my
tunnel on
> R8
> > >> and
> > >> > R9
> > >> > will not come online. I have also lowered the bandwidth on the
RSVP
> as
> > >> well
> > >> > as
> > >> > on the tunnel and this didnt help.
> > >> >
> > >> > Here is the config:
> > >> >
> > >> > R2
> > >> > mpls traffic-eng tunn
> > >> > router isis
> > >> > mpls traffic-eng level-1
> > >> > mpls traffic-eng rou lo0
> > >> > int e0/0.28
> > >> > mpls traffic-eng tunn
> > >> > ip rsvp band 5000
> > >> > int e0/0.27
> > >> > mpls traffic-eng tunn
> > >> > ip rsvp band 5000
> > >> > r7
> > >> > mpls traffic-eng tunn
> > >> > router isis
> > >> > mpls traffic-eng rout lo0
> > >> > mpls traffic-eng level-1
> > >> > int f1/0.27
> > >> > mpls traffic-eng tunn
> > >> > ip rsvp band 5000
> > >> > int f1/0.79
> > >> > mpls traffic-eng tunn
> > >> > ip rsvp band 5000
> > >> > r8
> > >> > mpls traffic-eng tunn
> > >> > router isis
> > >> > mpls traffic-eng rou lo0
> > >> > mpls traffic-eng level-1
> > >> > int f1/0.28
> > >> > mpls traffic-eng tunn
> > >> > ip rsvp band 5000
> > >> > int tunn 89
> > >> > ip unn lo0
> > >> > tunn so lo0
> > >> > tunn dest 32.32.0.9
> > >> > tunn mode mpls traffic-eng
> > >> > tunn mpls traffic-eng prio 7 7
> > >> > tunn mpls traffic-eng band 2000
> > >> > tunn mpls traffic-eng path-opt 10 dynamic
> > >> > tunn mpls traffic-eng autoroute announce
> > >> > r9
> > >> > mpls traffic-eng tunn
> > >> > router isis
> > >> > metric-sty wide
> > >> > mpls traffic-eng rou lo0
> > >> > mpls traffic-eng level-1
> > >> > int f1/0.79
> > >> > mpls traffic-eng tunn
> > >> > ip rsvp band 5000
> > >> > int tunn 98
> > >> > ip unn lo0
> > >> > tunn so lo0
> > >> > tunn dest 32.32.0.8
> > >> > tunn mode mpls traffic-eng
> > >> > tunn mpls traffic-eng prio 7 7
> > >> > tunn mpls traffic-eng band 2000
> > >> > tunn mpls traffic-eng path-opt 10 dynamic
> > >> > tunn mpls traffic-eng autoroute announce
> > >> >
> > >> > If I do a sh mpls traff tunn I get
> > >> >
> > >> > R9
> > >> >
> > >> > Rack1R9(config-if)#do sh mpls traffi tunn
> > >> > Name: Rack1R9_t98 (Tunnel98)
Destination:
> > >> 32.32.0.8
> > >> > Status:
> > >> > Admin: up Oper: down Path: not valid Signalling:
Down
> > >> > path option 10, type dynamic
> > >> > Config Parameters:
> > >> > Bandwidth: 2000 kbps (Global) Priority: 7 7
Affinity:
> > >> > 0x0/0xFFFF
> > >> > Metric Type: TE (default)
> > >> > AutoRoute: enabled LockDown: disabled Loadshare: 500
> > bw-based
> > >> > auto-bw: disabled
> > >> > History:
> > >> > Tunnel:
> > >> > Time since created: 32 minutes, 28 seconds
> > >> > Path Option 10:
> > >> > Last Error: PCALC:: No path to destination,
0000.0000.0008.00
> > >> >
> > >> > R8
> > >> > Rack1R8(config-if)#do sh mpls traffi tunn
> > >> > Name: Rack1R8_t89 (Tunnel89)
Destination:
> > >> 32.32.0.9
> > >> > Status:
> > >> > Admin: up Oper: down Path: not valid Signalling:
Down
> > >> > path option 10, type dynamic
> > >> > Config Parameters:
> > >> > Bandwidth: 500 kbps (Global) Priority: 7 7
Affinity:
> > >> 0x0/0xFFFF
> > >> > Metric Type: TE (default)
> > >> > AutoRoute: enabled LockDown: disabled Loadshare: 500
> > bw-based
> > >> > auto-bw: disabled
> > >> > History:
> > >> > Tunnel:
> > >> > Time since created: 33 minutes, 15 seconds
> > >> > Path Option 10:
> > >> > Last Error: PCALC:: No path to destination,
0000.0000.0009.00
> > >> > Rack1R8(config-if)#
> > >> >
> > >> > TIA for any help.
> > >> >
> > >> > Regards,
> > >> >
> > >> > James
> > >> >
> > >> >
> > >> > Blogs and organic groups at http://www.ccie.net
> > >> >
> > >> >
> >
Received on Fri Oct 30 2009 - 19:58:11 ART