LDP inbound label Filtering

MPLS LDP Inbound Label Binding Filtering

This can limit the number of label bindings stored in the LIB of the router

Command syntax.

Mpls   ldp  neighbor  [vrf vpn-name]   nbr-address   labels   accept acl

Task:-In R1 we will filter out 33.0.0.0 /8  ( Prefix coming from R3)----

Label binding before applying the config

R1#show mpls ldp bindings | be 33.0.0.0

  lib entry: 33.0.0.0/8, rev 47

        local binding:  label: 20

        remote binding: lsr: 2.2.2.2:0, label: 19

R1#sh mpls forwarding-table | in 33.0.0.

20         19         33.0.0.0/8       0             Fa1/0      192.168.0.2

Configuration on R1

R1#

access-list 3 deny   33.0.0.0

access-list 3 permit any

mpls ldp neighbor 2.2.2.2 labels accept 3

See there is  no remote binding for 33.0.0.0/8

R1#show mpls ldp bindings | be  33.0

  lib entry: 33.0.0.0/8, rev 47

R1#sh mpls forwarding-table | in 33.0.0.

20         No Label   33.0.0.0/8       0             Fa1/0      192.168