Mesh Lsp Name Encoding; Automatic Creation Of An Rsvp-Te Single-Hop Lsp - Nokia 7705 SAR-W Series Manual

MPLS Guide
If multiple instances of IS-IS are configured on a destination router, each with the
same router ID, a single instance of LSP will be signaled from other routers. If the
user shuts down one IGP instance, this will have no impact as long as the other IGP
instances remain up. The LSP will remain up and will forward traffic using the same
TE links. The same behavior exists with a provisioned LSP.
3.5.3.2
When the ingress LER signals the path of an auto-created mesh LSP, it includes the
name of the LSP and the path name in the Session Name field of the Session
Attribute object in the PATH message. The encoding is as follows:
Session Name: <lsp-name::path-name>, where the lsp-name component is encoded
as follows:
TemplateName-DestIpv4Address-TunnelId
where DestIpv4Address is the address of the destination of the auto-created LSP.

3.5.4 Automatic Creation of an RSVP-TE Single-Hop LSP

If the one-hop option is specified instead of a prefix policy, the auto-lsp command
enables the automatic signaling of single-hop, point-to-point LSPs using the
specified template to all directly connected neighbors. This LSP type is referred to as
auto-created single-hop LSPs of type one-hop. Unlike the automatically created
RSVP-TE LSP mesh, the automatically created single-hop RSVP-TE LSPs have no
requirement for a prefix list to be referenced.
The first requirement is to create an LSP template containing the common
parameters used to establish each single-hop LSP. The template must be created
with the keyword one-hop-p2p:
config>router>mpls>lsp-template template-name one-hop-p2p
Upon creation of the template, CSPF is automatically enabled (and cannot be
disabled), and the hop-limit is set to a value of two. The hop-limit defines the
number of nodes the LSP may traverse, and since these are single-hop LSPs to
adjacent neighbors, a limit of two is sufficient. The template must also reference a
default path before it can be placed in the no shutdown state.
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Mesh LSP Name Encoding

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