Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 119)

Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide 95
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Configuring MPLS
1
• filter-inter-as-routes
• filter-intra-as-ibgp routes
Inter-AS routes originate from other BGP autonomous systems. Intra-AS routes originate from within
a BGP AS.
Configuration considerations
NOTE
Brocade recommends that the user makes route filtering configuration decisions when booting the
router for the first time.
A system reload is not required when the user changes the filtering configuration. However, when
the user enables inter-as filtering, RSVP sessions using iBGP routes, and LDP FECs (corresponding
to iBGP routes) will flap.
Configuring route filtering for MPLS and iBGP routes
When the user enables inter-as-route filtering, the RTM does not send any inter-AS routes to MPLS.
To enable inter-as filtering, enter the following commands in the MPLS policy configuration mode.
Brocade(config-mpls)# policy
Brocade(config-mpls-policy)# filter-inter-as-routes
Syntax: [no] filter-inter-as-routes
NOTE
Inter-as filtering is enabled by default. Intra-as filtering is disabled by default.
When the user enables intra-as filtering, the RTM does not send any iBGP routes to MPLS. Intra-as
filtering can only be enabled when inter-as filtering is enabled. To enable the intra-as filtering, enter
the following commands.
Brocade(config-mpls-policy)# filter-inter-as-routes
Brocade(config-mpls-policy-route-filter)# filter-intra-as-ibgp-routes
Syntax: [no] filter-intra-as-ibgp-routes
To disable intra-as filtering, enter the [no] version of this command.
To disable all filtering, including intra-as filtering, enter the following command under the MPLS
policy configuration mode.
Brocade(config-mpls-policy)# no filter-inter-as-routes