Restrictions For Implementing Gmpls Uni; Information About Implementing Gmpls Uni; Gmpls Uni Vs Gmpls Nni; Gmpls Lsp Signaling - Cisco CRS Configuration Manual

Restrictions for Implementing GMPLS UNI

• You must be in a user group associated with a task group that includes the proper task IDs. The command
• Router that runs Cisco IOS XR software.
• Installation of the Cisco IOS XR software mini-image on the router.
• Installation of the Cisco IOS XR MPLS software package on the router.
Restrictions for Implementing GMPLS UNI
• The total number of configured GMPLS UNI controllers should not exceed the platform scale limit of
• Each UNI-N (ingress or egress) should be routable from its adjacent UNI-C. The UNI-C nodes need to
• GMPLS UNI is supported only over DWDM controllers and so, over POS and GigabitEthernet interfaces.
• GMPLS UNI is supported only with these Cisco CRS Line Cards:

Information About Implementing GMPLS UNI

To implement GMPLS UNI, you should understand these concepts:

GMPLS UNI vs GMPLS NNI

In case of GMPLS NNI, the optical network topology is known and path calculations are performed at the
NNI head. In case of GMPLS UNI, the optical network topology is unknown to the UNI-C nodes and path
calculations are performed by the UNI-N nodes.

GMPLS LSP Signaling

The GMPLS overlay model architecture is used for LSP signaling for GMPLS connections. In GMPLS UNI,
UNI-C nodes send a request for a connection to UNI-N node. The connection request does not contain an
end-to-end path. This is because, as mentioned previously, UNI-C nodes do not have knowledge of the topology
of the optical network and therefore cannot determine the end-to-end path. The UNI-C node signals a connection
request without an ERO.
The LSP diversity is signalled on a GMPLS UNI tunnel with a path-option. A path-option is permitted on a
GMPLS UNI tunnel with a "no ERO" and an optional "XRO" attribute sets to specify LSP diversity
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
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reference guides include the task IDs required for each command. If you suspect user group assignment
is preventing you from using a command, contact your AAA administrator for assistance.
500 GMPLS interfaces.
be routable from the UNI-N nodes too.
◦ Cisco CRS-1 OC768 (C/L-band) DWDM PLIM
◦ Cisco CRS-1 OC768 DPSK (C/L-band) STD CHAN PLIM
◦ Cisco CRS-1 4 port 10GE (C/L-band) DWDM PLIM
◦ Cisco CRS 1-Port 100GE CP-DQSPK Full C-Band Tunable DWDM Interface Module
Implementing GMPLS UNI