Donnerstag, 12. August 2010

Dumbass Mistakes (1) - Keine Labels für Global-Routing-Table Prefixe




#Topology#

#Symptom# : Keine Outgoing Labels für Prefixe innerhalb der Global-Routing-Table

test
Symptom : Kein Outgoing Label für PE2's Loopback

PE2#sh ip route | incl 10.0.0.1/32
O       10.0.0.1/32 [110/3] via 10.2.2.1, 1d17h, FastEthernet1/0
PE2#
PE2#show mpls forwarding-table
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop
Label  Label or VC   or Tunnel Id      Switched      interface
16     No Label      10.0.0.1/32       0             Fa1/0      10.2.2.1
17     No Label      10.0.0.10/32      0             Fa1/0      10.2.2.1
18     No Label      10.1.1.0/30       0             Fa1/0      10.2.2.1
20     Pop Label     22::22/128        0             aggregate
PE2#


#Resolution# Auf dem P Router-Interface (fa1/0) in Richtung PE1 kein "mpls ip" konfiguriert. Kein durchgängiger LSP (Label Switch Path)


test
PE2#sh ip route | incl 10.0.0.1/32
O       10.0.0.1/32 [110/3] via 10.2.2.1, 1d17h, FastEthernet1/0
PE2#
PE2#sh mpls forwarding-table
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop
Label  Label or VC   or Tunnel Id      Switched      interface
16     16            10.0.0.1/32       0             Fa1/0      10.2.2.1
17     Pop Label     10.0.0.10/32      0             Fa1/0      10.2.2.1
18     Pop Label     10.1.1.0/30       0             Fa1/0      10.2.2.1
20     Pop Label     22::22/128        0             aggregate
PE2#

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