Cisco 10700 User's Guide download pdf (Page 497)

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Cisco 12000/10700 v3.1.1 Router Manager User Guide

OL-4455-01

Chapter 15 MPLS Management

Fault Management for MPLS Traffic Engineering

Tunnel Status

Admin Status—Displays the desired operational status of this tunnel. Possible values are up ready to

pass packets, down, or testing in some test mode.

Operational Status—Indicates the actual operational status of this tunnel, which is typically but not

limited to, a function of the state of individual segments of this tunnel. Possible values are: up ready to

pass packets, down, testing in some test mode, unknown status cannot be determined, dormant,

notPresent some component is missing or lowerLayerDown down due to the state of lower layer

interfaces.

Instance Uptime—This value identifies the total time that this tunnel instances operational status has

been Up.

Advanced

Setup Priority—Displays the setup priority of this tunnel. Range of values are 0 through 7.

Holding Priority—Displays the holding priority for this tunnel. Range of values are 0 through 7.

Session Attributes—This bitmask indicates optional session values for this tunnel. The following

describes these bitfields:

• fastReroute—This flag indicates that the any tunnel hop may choose to reroute this tunnel without

tearing it down. This flag permits transit routers to use a local repair mechanism which may result

in violation of the explicit routing of this tunnel. When a fault is detected on an adjacent downstream

link or node, a transit router can reroute traffic for fast service restoration.

• mergingPermitted—This flag permits transit routers to merge this session with other RSVP sessions

for the purpose of reducing resource overhead on downstream transit routers, thereby providing

better network scalability.

• isPersistent—Indicates whether this tunnel should be restored automatically after a failure occurs.

• isPinned—This flag indicates whether the loose- routed hops of this tunnel are to be pinned.

• isComputed—This flag indicates whether the tunnel path is computed using a constraint-based

routing algorithm based on the mplsTunnelHopTable entries.

• recordRoute—This flag indicates whether or not the signaling protocol should remember the tunnel

path after it has been signaled.

Owner—Indicates which protocol created and is responsible for managing this tunnel. Values rsvp and

crldp should not be used at the head-end of a MPLS tunnel. Possible values are: admin represents all

management entities, rsvp, crldp, policyAgent, or other.

Local Protect In Use—Displays that the local repair mechanism is in use to maintain this tunnel (usually

in the face of an outage of the link it was previously routed over).

Instance Priority—This value indicates priority (in descending order, with 0 indicating the lowest

priority) within a group of tunnel instances.

Role—This value signifies the role that this tunnel entry/instance represents. This value must be set to

head at the originating point of the tunnel. This value must be set to transit at transit points along the

tunnel, if transit points are supported. This value must be set to tail at the terminating point of the tunnel

if tunnel tails are supported.

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