KB.15.15

When you use no-summary, the change takes effect immediately. If you apply the option to a

previously configured area, the switch flushes all of the summary LSAs it has generated (as an ABR)

from the area.

NOTE: This feature applies only when the routing-switch is configured as an ABR for a stub area

or NSSA. To completely prevent summary LSAs from injection into the area, use no-summary to

disable the summary LSAs on each OSPFv3 router that is an ABR for the area.

To implement the above operation for a stub area or NSSA, enter a command such as the following:

HP Switch(ospf3)# area 40 stub metric-cost 3 no-summary

For the full command syntax, see “Configuring a stub or NSSA area” (page 212).

About equal-cost multi-path routing

The ECMP feature allows OSPFv3 to add routes with multiple next-hop addresses and with equal

costs to a given destination in the forwarding information base (FIB) on the routing switch. For

example, if multiple, equal-cost, next-hop routes exist on a routing switch for a destination in a

network with the prefix 2620:e::/64, these routes would appear similar to the following in the

IPv6 Route Entries Table:

About equal-cost multi-path routing 255