Restrictions For Implementing Gmpls Uni - Cisco ASR 9000 Series Configuration Manual
Aggregation services router mpls
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Also See for ASR 9000 Series:
- Command reference manual (1138 pages) ,
- Routing configuration manual (702 pages) ,
- Reference manual (696 pages)
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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 ASR 9000 Enhanced Ethernet 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
requirements. If multiple LSP exclusions are configured in the attribute-set, they can be added to the path
message along with an appropriate LSP connection diversity sub-object.
Cisco ASR 9000 Series Aggregation Services Router MPLS Configuration Guide, Release 4.3.x
278
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.
◦ A9K-MOD80-SE : 80G Modular Line Card, Service Edge Optimized
◦ A9K-MOD80-TR : 80G Modular Line Card, Packet Transport Optimized
Implementing GMPLS UNI
OL-28381-02
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