[c-nsp] default route Label

Harold Ritter (hritter) hritter at cisco.com
Sun May 20 22:46:21 EDT 2007


Omar,

The default route is not labeled by default. You need to use the command
"mpls ip default-route" to change this behavior.

Cheers, 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of omar parihuana
Sent: Sunday, May 20, 2007 10:26 PM
To: nsp
Subject: [c-nsp] default route Label

Hi List,

I'm working on a pre-production MPLS network,  I'm using ISIS as IGP and
LDP, so far, the ISIS learned routes are labeled, and apparently all
work fine. Rightnow I've generated a  default route via
default-information originate command into a PE router after the others
P learned the default route, but I've figured out that default route is
not labeled. Is it a well behavior? or maybe I'm a wrong. Is possible
labeled a default route?

(PE1)--------------------------------------------(P)
Default route generate ->       \
                                            \ (P)

PE Output:
========

7204-1#sh ip route
Codes: 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

Gateway of last resort is 172.16.20.5 to network 0.0.0.0

     172.16.0.0/16 is variably subnetted, 8 subnets, 3 masks
i L2    172.16.40.4/32 [115/25] via 172.16.20.5, FastEthernet0/0
i L2    172.16.40.1/32 [115/35] via 172.16.20.5, FastEthernet0/0
C       172.16.40.2/32 is directly connected, Loopback0
i L2    172.16.40.3/32 [115/20] via 172.16.20.5, FastEthernet0/0
i L2    172.16.20.8/30 [115/25] via 172.16.20.5, FastEthernet0/0
i L2    172.16.30.0/24 [115/10] via 172.16.20.5, FastEthernet0/0
i L2    172.16.20.0/30 [115/15] via 172.16.20.5, FastEthernet0/0
C       172.16.20.4/30 is directly connected, FastEthernet0/0
i*L2 0.0.0.0/0 [115/10] via 172.16.20.5, FastEthernet0/0 7204-1#

7204-1#sh mpls for
Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop
tag    tag or VC   or Tunnel Id      switched   interface
16     Pop tag     172.16.40.3/32    0          Fa0/0      172.16.20.5
17     Pop tag     172.16.20.0/30    0          Fa0/0      172.16.20.5
18     16          172.16.40.4/32    0          Fa0/0      172.16.20.5
19     Pop tag     172.16.30.0/24    0          Fa0/0      172.16.20.5
20     19          172.16.20.8/30    0          Fa0/0      172.16.20.5
21     18          172.16.40.1/32    0          Fa0/0      172.16.20.5
7204-1#

7204-1#sh mpls ldp bin
  tib entry: 0.0.0.0/0, rev 10
        local binding:  tag: imp-null
        remote binding: tsr: 172.16.40.3:0, tag: imp-null
  tib entry: 172.16.20.0/30, rev 12
        local binding:  tag: 17
        remote binding: tsr: 172.16.40.3:0, tag: imp-null
  tib entry: 172.16.20.4/30, rev 4
        local binding:  tag: imp-null
        remote binding: tsr: 172.16.40.3:0, tag: imp-null
  tib entry: 172.16.20.8/30, rev 20
        local binding:  tag: 20
        remote binding: tsr: 172.16.40.3:0, tag: 19
  tib entry: 172.16.30.0/24, rev 18
        local binding:  tag: 19
        remote binding: tsr: 172.16.40.3:0, tag: imp-null
  tib entry: 172.16.40.1/32, rev 22
        local binding:  tag: 21
        remote binding: tsr: 172.16.40.3:0, tag: 18
  tib entry: 172.16.40.2/32, rev 6
        local binding:  tag: imp-null
        remote binding: tsr: 172.16.40.3:0, tag: 17
  tib entry: 172.16.40.3/32, rev 8
        local binding:  tag: 16
        remote binding: tsr: 172.16.40.3:0, tag: imp-null
  tib entry: 172.16.40.4/32, rev 15
        local binding:  tag: 18
        remote binding: tsr: 172.16.40.3:0, tag: 16 7204-1#

Thanks in advanced!
--
Omar E.P.T
-----------------
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