max-metric router-lsa
Configure the maximum cost of 65535 on a new router so that it functions as a stub router in the network and OSPF
traffic destined to other networks is not forwarded on a path through the router.
C-Series, E-Series, Z-Series, S4810
Syntax
max-metric router-lsa
[
on-startup
{
announce-time
|
wait-for-bgp
[
wait-time
]}]
To remove the maximum metric assignment from an OSPF router and send LSAs with the
currently configured cost, enter no max-metric router-lsa [on-startup {
announce-time
| wait-
for-bgp [
wait-time
]}].
Parameters
on-startup
announce-time
Enter the time (in seconds) following boot-up during which the
maximum cost (65535) for transmitting OSPF traffic on router
interfaces is announced in LSAs and the router functions as a stub
router.
Range: 5 to 86400 seconds.
on-startup wait-
for-bgp [
wait-
time
]
Enable the router to announce the maximum metric in OSPF LSAs
until the BGP routing table converges with updated routes. Default:
600 seconds.
You can also specify the time (in seconds) that the router waits for
the BGP routing table to converge before it stops advertising the
maximum cost in LSAs and advertises the router’s currently
configured OSPF cost. Range: 5 to 86400 seconds.
Defaults
Not Configured.
Command Modes
ROUTER OSPF
Command History
Version 9.1.(0.0)
Introduced on the S4810 and Z9000.
Version 8.4.2.5
Introduced on C-Series and E-Series TeraScale.
Version 8.4.1.3
Introduced on E-Series ExaScale.
Usage
Information
When you bring a new router onto an OSPF network, you can configure the router to function
as a stub router by globally reconfiguring the OSPF link cost so that other routers do not use a
path that forwards traffic destined to other networks through the new router for a specified
time until the router’s switching and routing functions are up and running, and the routing
tables in network routers have converged.
By using the max-metric router-lsa command, you force the link cost of all OSPF non-stub links
to the maximum link cost (65535). The advertisement of this maximum metric causes other
routers to assign a cost to the new router that is higher than the cost of using an alternate
path. Because of the high cost assigned to paths that pass through the new router, other
routers will not use a path through the router as a transit path to forward traffic to other
networks.
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Summary of Contents for Force10 Z9000
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