Configuring A Static Lsp; Configuration Prerequisites; Configuration Procedure - 3Com MSR 50 Series Configuration Manual

Configuring a Static
LSP
Configuration
Prerequisites

Configuration Procedure

packet must be popped out on the node, and that the next node will perform
IP forwarding.
A label value of 3 represents an implicit null label and never appears in the label
■
stack. When an LSR finds that it is assigned an implicit null label, it directly
performs a pop operation, rather than substitutes the value for the original
label at the stack top.
Follow these steps to configure PHP:
To do...
Enter system view
Enter MPLS view
Specify the egress to
support PHP and set
the type of the label to
be distributed to the
penultimate hop
An LSP can be static or dynamic. A static LSP is manually configured, while a
dynamic LSP is established by MPLS LDP.
For a static LSP to work, all LSRs along the LSP must be configured properly.
Static LSPs are used in MPLS L2VPN.
n
For configuration of MPLS L2VPN, refer to
1425.
Before configuring a static LSP, be sure to complete these tasks:
Determining the ingress, transit LSRs, and egress for the static LSP
■
Configuring MPLS basic capability on all the LSRs
■
Follow these steps to configure a static LSP:
To do...
Enter system view
Configure a static LSP
taking the current LSR as
the ingress
Configure a static LSP
taking the current LSR as a
transit LSR
Use the command...
system-view
mpls
label advertise
{ explicit-null |
implicit-null | non-null }
"MPLS L2VPN Configuration" on page
Use the command...
system-view
static-lsp ingress lsp-name
{ destination dest-addr { mask |
mask-length } } { nexthop
next-hop-addr | outgoing-interface
interface-type interface-number }
out-label out-label
static-lsp transit lsp-name
incoming-interface interface-type
interface-number in-label in-label
{ nexthop next-hop-addr |
outgoing-interface interface-type
interface-number } out-label out-label

Configuring a Static LSP

Remarks
-
-
Optional
By default, an egress supports PHP and
distributes to the penultimate hop an
implicit null label.
Note that you must reset LDP sessions
for the configuration to take effect.
Remarks
-
Optional
Optional
1327