Riverstone Networks WICT1-12 - Manual (Page 375)

Riverstone Networks RS Switch Router User Guide Release 8.0 17-67
MPLS Configuration Configuring L2 Tunnels
- If you are using the VLAN ID as the FEC, specify the
vlan
option with the
ldp add l2-fec
command.
- If you are using the incoming port as the FEC, specify the
customer-id
option with the
ldp
add l2-fec
command.
- If you are using a combination of VLAN ID and incoming port as the FEC, specify both the
vlan
and
customer-id
options with the
ldp add l2-fec
command.
3. Configure the LDP-signaling VLAN and interface. The ports at both ends of a link between two
LSRs must belong to the same VLAN, i.e., the VLAN ID must be the same on both routers.
Note Ports in the LDP-signaling VLAN must be trunk ports. If “untagged” packets are
to be transported on the LSP, the tunnel port must be configured as a trunk port
that does not send 802.1q-tagged packets (use the
untagged
option with the
vlan make trunk-port
command).
4. Configure the tunnel LSP. If you are using RSVP for signaling in the tunnel LSP, use
mpls
commands, as described in Section 17.5, "Configuring L3 Label Switched Paths." If you configure
more than one tunnel LSP to the same destination, you can specify the preferred LSP to be used with
the
transport-lsp
option of the
ldp set l2-fec
command. You can also specify if an alternate
LSP can be used. Enable and start MPLS and the signaling protocol (either LDP or RSVP) for the
tunnel LSP.
Note The
transport-lsp
option of the
ldp set l2-fec
command allows you to
assign a specific LSP to specific customer traffic. This provides a way to offer
different LSP services to different customers.
5. Configure the IGP routing protocol, either OSPF or IS-IS.
Transit LSR Configuration for L2 Dynamic Labels
On the transit LSRs, configure the following:
1. Configure the LDP- or RSVP-signaling VLAN and interface.
2. Enable and start MPLS and the signaling protocol (either LDP or RSVP) for the tunnel LSP.
3. Configure the IGP routing protocol, either OSPF or IS-IS.