427
3. Configure the router as
a stub router.
• Method 1:
stub-router r-bit [ include-stub |
on-startup { seconds |
wait-for-bgp [ seconds ] } ] *
• Method 2:
stub-router max-metric
[ external-lsa [ max-metric-value ]
| summary-lsa
[ max-metric-value ] |
include-stub | on-startup
{ seconds | wait-for-bgp
[ seconds ] } ] *
By default, the router is not
configured as a stub router.
A stub router is not related to a
stub area.
Configuring prefix suppression
By default, an OSPFv3 interface advertises all of its prefixes in LSAs. To speed up OSPFv3
convergence, you can suppress interfaces from advertising all of their prefixes. This feature helps
improve network security by preventing IP routing to the suppressed networks.
When prefix suppression is enabled:
• OSPFv3 does not advertise the prefixes of suppressed interfaces in Type-8 LSAs.
• On broadcast and NBMA networks, the DR does not advertise the prefixes of suppressed
interfaces in Type-9 LSAs that reference Type-2 LSAs.
• On P2P and P2MP networks, OSPFv3 does not advertise the prefixes of suppressed interfaces
in Type-9 LSAs that reference Type-1 LSAs.
As a best practice, configure prefix suppression on all OSPFv3 routers if you want to use prefix
suppression.
Configuring prefix suppression for an OSPFv3 process
Enabling prefix suppression for an OSPFv3 process does not suppress the prefixes of loopback
interfaces and passive interfaces.
To configure prefix suppression for an OSPFv3 process:
1. Enter system view.
N/A
2. Enter OSPFv3 view.
ospfv3
[ process-id |
vpn-instance
vpn-instance-name ] *
N/A
3. Enable prefix suppression for
the OSPFv3 process.
prefix-suppression
By default, prefix suppression
is disabled for an OSPFv3
process.
Configuring prefix suppression for an interface
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface-type interface-number N/A
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