Configuring MPLS Configuring MPLS
OmniSwitch AOS Release 6 Network Configuration Guide September 2009 page 10-23
Selecting the LDP Interface Transport Address
The transport address specifies whether the LDP interface uses the system IP address or the LDP interface
IP address to set up an LDP TCP session with neighboring routers. Note that on the OmniSwitch, the
system IP address is the configured Loopback0 interface address.
By default, the system IP address is used. To change the transport address selection, use the configure
router ldp interface-parameters transport-address command. For example:
-> configure router ldp interface-parameters transport-address interface
Avoid using the IP interface address if there are multiple interface connections between two LDP peers.
Configuring Static LSPs
A Static LSP (tunnel) is a user-defined path of Label Switching Routers (LSRs). Configuration of label
mappings and MPLS actions is required on each router that will participate in the static LSP. Signaling
protocols, such as LDP, are not required and there are no dependencies on the IGP topology or local
forwarding table.
A static LSP consists of one ingress router, one or more transit routers, and one egress router. The Static
LSP instance is identified by the LSP name on the ingress router and by the MPLS interface name and
ingress label combination on both transit and egress routers.
The following configuration tasks are required to set up a static LSP tunnel. Note that the tasks are
grouped according to the role of the LSRs on which the path is configured:
Configuration Tasks: Ingress Router
• Configure the MPLS interface—An MPLS interface is required on each router that will participate in
the static LSP tunnel. By default, this interface is enabled. See “Configuring the MPLS Interface” on
page 10-25.
• Configure the static LSP instance—The static LSP instance is associated with a name and identifies
the ingress router as the origination point of the static LSP tunnel. See “Configuring the Static LSP
Instance” on page 10-26.
• Configure the destination of the static LSP—Specifies the destination system IP address for the far-
end router on which the static LSP tunnel will end. This address is the same address used by the
Service Distribution Point (SDP) associated with the static LSP. See “Configuring the Static LSP
Instance” on page 10-26.
• Configure the static LSP label-map push action—Specifies a label number to push on to the packet
label stack and the next-hop router IP address. See “Configuring the Static LSP Label-Map Push
Action” on page 10-27.
• Enable the static LSP instance—By default, the static LSP instance is disabled. After the destination
address for the instance is specified and the label-map push operation is configured, enable the static
LSP instance on the ingress router. See “Configuring the Static LSP Instance” on page 10-26.
• Create a backup (protecting) static LSP tunnel—(optional) Create a backup static LSP tunnel by
configuring another static LSP instance with the same destination system IP address as the protected
static LSP but with a different LSP name. See “Using Static Fast ReRoute (FRR)” on page 10-27.
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