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question tag-switching advertise-tags

hi,

i have some pe-routers which have loopbackint - al in two countigous network

(172.20.0.0 /24 and 172.16.24.0 /26)

i use these loopbackint for "tdp router-id".

no w i want that only these networks gets label-assignment, so i configured the following:

tag-switching advertise-tags for tdp_networks to tdp_neighbors

!

ip access-list standard tdp_neighbors

permit 172.20.20.25

permit 172.20.20.26

permit 172.16.24.0 0.0.0.63

ip access-list standard tdp_networks

permit 172.20.20.25

permit 172.20.20.26

permit 172.16.24.0 0.0.0.63

!

if i do a "sh tag forward" i also see networks which are not specified in the acl above which have also a tag assigned - why ??

mplsrbgope01#sh tag forwarding-table

Local Outgoing Prefix Bytes tag Outgoing Next Hop

tag tag or VC or Tunnel Id switched interface

16 Untagged 172.16.24.2/32 1195 Gi0/1.190 172.16.24.93

17 Untagged 172.20.0.26/32 0 Gi0/1.190 172.16.24.93

18 Untagged 10.16.0.0/13[V] 0 Gi0/1.194 10.18.56.1

19 Aggregate 10.18.56.0/27[V] 0

20 Untagged 192.168.96.0/24[V] \

0 Gi0/1.194 10.18.56.1

21 Untagged 193.110.129.0/24[V] \

0 Gi0/1.195 10.18.56.33

22 Aggregate 10.18.56.32/27[V] 0

23 Untagged 10.16.0.0/13[V] 0 Gi0/1.195 10.18.56.33

24 Untagged 192.168.96.0/24[V] \

0 Gi0/1.195 10.18.56.33

25 Untagged 192.168.97.0/24[V] \

0 Gi0/1.195 10.18.56.33

26 Aggregate 192.168.128.64/27[V] \

0

447 Untagged 10.21.200.250/32 0 AT3/0.100100 point2point

448 Untagged 172.16.24.4/32 142 AT3/0.100100 point2point

mplsrbgope01#

perhaps because there are labels for vpns ?? [v] - but look at

the network 10.21.200.250 which is not in a vpn and NOT in the acl !!

i only want to have labels assigned to the ibgp next hop (loopbackadr)

thanks for help !!

1 REPLY
New Member

Re: question tag-switching advertise-tags

instead of this:

tag-switching advertise-tags for tdp_networks to tdp_neighbors

try this:

no tag-switching advertise tags

tag-switching advertise-tags for tdp_networks

regards

Tim

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