Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 451)

Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide 427
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MPLS over GRE tunnel
2
Router R3
The following commands configure Router R3 in Figure 49 .
R3(config-mpls)# interface loopback 1
R3(config-lbif-1)# port-name Generic All-Purpose Loopback
R3(config-lbif-1)# ip address 192.168.2.102/32
R3(config-lbif-1)# ip ospf area 0
R3(config-lbif-1)# exit
R3(config)# router mpls
R3(config-mpls)# mpls-interface e 2/1
R3(config-mpls)# ldp-enable
R3(config-mpls)# exit
R3(config-mpls)# vll VLL_to_R1 40000
R3(config-mpls-vll)# vll-peer 192.168.2.100
R3(config-mpls-vll)# vlan 200
R3(config-mpls-vll-vlan)# tagged e 3/11
R3(config-mpls-vll-vlan)# exit
R3(config-mpls-vll)# exit
R3(config)# ip router-id 192.168.2.102
R3(config)# router ospf
R3(config-ospf-router)# area 0
R3(config-ospf-router)# exit
R3(config-mpls)# interface e 3/11
R3(config-if-e100-3/11)# port-name VLL_endpoint
R3(config-if-e100-3/11)# enable
R3(config-if-e100-3/11)# exit
R3(config-mpls)# interface e 2/1
R3(config-e10000-2/1)# port-name Connection_to_R2
R3(config-e10000-2/1)# enable
R3(config-e10000-2/1)# ip address 192.168.41.1/30
R3(config-e10000-2/1)# ip ospf area 0
R3(config-e10000-2/1)# exit
MPLS over GRE tunnel
Multi-Protocol Label Switching (MPLS) packets can traverse a non-MPLS network using Label
Distribution Protocol (LDP) in transit mode over a Generic Routing Encapsulation (GRE) tunnel. This
method can be convenient for networks that do not require traffic engineering.
NOTE
LDP ingress and egress functionality over a GRE tunnel is not supported.
NOTE
RSVP is not supported for GRE tunnels. In the case of LDP over GRE, when the user enters the
mpls-interface tunnel command, RSVP is not enabled; for other types of interfaces RSVP is enabled
when the interface is configured.
NOTE
All LDP enabled interfaces must have the same IP MTU. Otherwise, when LDP is enabled on lower
MTU interfaces, existing Hello adjacencies flap once to negotiate the LDP MAX PDU size with the
peers.