Owner's Manual

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MPLS
This tab configures the top level MPLS protocol options.
Figure 13-54. Protocols -> Setup: MPLS (Diff-Serv TF)
This tab has the following fields:
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Advertise Hold Time —Do not advertise when the LSP goes from up to down, for a certain
period of time known as hold time. Enter number of seconds.
-
Class of Service —(CoS) value given to all packets in the LSP. The CoS value might affect the
scheduling or queuing algorithm of traffic traveling along an LSP. A higher value typically
corresponds to a higher level of service. Range—0 through 7. If you do not specify a CoS
value, the IP precedence bits from the packet's IP header are used as the packet's CoS value.
-
Hop Limit —For an LSP, the maximum number of routers that the LSP can traverse, including
the ingress and egress routers. For fast reroute, how many more routers a detour is allowed to
traverse compared with the LSP itself. For example, if an LSP traverses 4 routers, any detour
for the LSP can be no more than 10 router hops, including the ingress and egress routers.
Range: 2 through 255 (for an LSP); 0 through 255 (for fast reroute) Default: 255 (for an LSP);
6 (for fast reroute).
-
Optimize Timer —Enable periodic reoptimization of an LSP that is already set up. If topology
changes occur, an existing path might become suboptimal, and a subsequent recomputation
might be able to determine a better path. This option is useful only on LSPs for which