Configuring Route Filtering - 3Com S7906E Configuration Manual

OSPF 1 deleted OOB Progress timer for neighbor 192.1.1.2.
OSPF 1 Gr Wait Timeout timer fired.
OSPF 1 deleted GR wait timer.
OSPF 1 deleted GR Interval timer.
OSPF 1 GR Completed for OSPF Router
OSPF 1 notified RM that OSPF process left GR.
RM notified that all protocol left GR.
OSPF 1 started flushing STALE LSA after all protocol left GR.
OSPF 1: Flush Stale Area LSAs
OSPF 1: Start Flush Stale ASE + NSSA LSAs
OSPF 1: End Flush Stale ASE + NSSA LSAs
Switch A completes GR with the help of Switch B.

Configuring Route Filtering

Network requirements
As shown in the following figure:
All the switches in the network run OSPF. The AS is divided into three areas.
Switch A and Switch B work as ABRs.
Configure Switch C as an ASBR to redistribute external routes (static routes), and configure a filter
policy on Switch C to filter out redistributed route 3.1.3.0/24.
Configure a route policy on Switch A to filter route 10.5.1.0/24.
Figure 1-29 Network diagram for OSPF route filtering configuration
Configuration procedure
1) Configure IP addresses for interfaces (omitted)
2) Configure OSPF basic functions (Refer to
3) Configure OSPF to redistribute routes.
# On Switch C, configure a static route destined for network 3.1.1.0/24.
<SwitchC> system-view
[SwitchC] ip route-static 3.1.1.0 24 10.4.1.2
# On Switch C, configure a static route destined for network 3.1.2.0/24.
[SwitchC] ip route-static 3.1.2.0 24 10.4.1.2
Configuring OSPF Basic
1-70
Functions).