Administrator Guide

To remove the maximum metric assignment from an OSPF router and send LSAs with the currently congured
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 trac 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 congured OSPF cost. Range: 5 to 86400 seconds.
Defaults Not Congured.
Command Modes
ROUTER OSPF
Command History
Version Description
9.10(0.0) Introduced on the S6100-ON.
9.8(1.0) Introduced on the Z9100-ON.
9.1.(0.0) Introduced on the S4810 and Z9000.
8.4.2.5 Introduced on C-Series and E-Series TeraScale.
8.4.1.3 Introduced on E-Series ExaScale.
Usage Information
When you bring a new router onto an OSPF network, you can congure the router to function as a stub router by
globally reconguring the OSPF link cost so that other routers do not use a path that forwards trac destined to
other networks through the new router for a specied 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 trac to
other networks.
Use the max-metric router-lsa command to gracefully shut down or reload a router without dropping packets
destined for other networks.
NOTE: If you enter the max-metric router-lsa command without an option (on-startup announce-time
or on-startup wait-for-bgp [ wait-time ]), the maximum metric of 65535 is always announced in LSAs
sent by the router.
Example
max-metric router-lsa
Dell(conf)#router ospf 10
Dell(conf-router_ospf)#log-adjacency-changes
Dell(conf-router_ospf)#network 4.1.1.0/24 area 0
Open Shortest Path First (OSPFv2 and OSPFv3) 1181