R0106-HP MSR Router Series Layer 3 - IP Routing Command Reference(V7)

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A Type-2 external route has low credibility. OSPF considers the cost from the ASBR to the destination of
a Type-2 external route is much bigger than the cost from the ASBR to an OSPF internal router. The cost
of a Type-2 external route equals the cost from the ASBR to the Type-2 external route's destination.
The import-route command cannot redistribute default external routes.
The import-route bgp command redistributes only EBGP routes. Because the import-route bgp
allow-ibgp command redistributes both EBGP and IBGP routes and might cause routing loops, use it with
caution.
Only active routes can be redistributed. To view information about active routes, use the display ip
routing-table protocol command.
The undo import-route protocol all-processes command removes only the configuration made by the
import-route protocol all-processes command, instead of the configuration made by the import-route
protocol process-id command.
The import-route nssa-only command redistributes AS-external routes in Type-7 LSAs only into the NSSA
area.
Examples
# Redistribute routes from RIP process 40 and specify the type, tag, and cost as 2, 33, and 50 for
redistributed routes.
<Sysname> system-view
[Sysname] ospf 100
[Sysname-ospf-100] import-route rip 40 type 2 tag 33 cost 50
Related commands
default-route-advertise (OSPF view)
ispf enable
Use ispf enable to enable OSPF incremental SPF (ISPF).
Use undo ispf enable to disable OSPF ISPF.
Syntax
ispf enable
undo ispf enable
Default
OSPF ISPF is enabled.
Views
OSPF view
Predefined user roles
network-admin
Usage guidelines
Upon topology changes, ISPF recomputes only the affected part of the SPT, instead of the entire SPT.
Examples
# Enable ISPF for OSPF process 100.
<Sysname> system-view