3com 8807 Guida Di Riferimento

Related command: acl, ip ip-prefix.

# Filter the received routing information as per the condition defined in ACL 2000.

[SW8800] acl number 2000

 

[3Com-acl-basic-2000] rule permit source 20.0.0.0  0.255.255.255

 

[3Com-acl-basic-2000] rule deny source any

 

[3Com-acl-basic-2000] quit

 

[SW8800] ospf 1

 

[3Com-ospf-1]area 1

 

[3Com-ospf-1-area-0.0.0.1] filter-policy 2000 import 

graceful-restart [ value | compatible ]

OSPF view

value: GR period in the way defined in the RFC3623 standard. It is 120 seconds by 
default.

compatible: Performs GR in compatible way.

Use the graceful-restart [ value ] command to configure the OSPF protocol for 
the switch to perform GR in the way defined in the RFC3623 standard. The value 
argument specifies the period of GR and it is 40 seconds by default. Use the 
graceful-restart compatible command to configure the OSPF protocol for the 
switch to perform GR in the compatible way.

Use the undo graceful-start command to disable the OSPF GR function.

GR is not supported by default.

The OSPF GR function solves the problem of route oscillation and forwarding 
break caused by protocol-software-reset on the distributed system where control 
and forward are separate. This function is an enhanced OSPF function. GR can be 
implemented in one of the following two ways: the way defined in the RFC3623 
standard and the compatible way to interconnect with other vendors.

# Specify the OSPF process 2 to perform GR in the way defined in the RFC3623 
standard at the period of 300 seconds.

<SW8800>system-view

 

[SW8800] ospf 2

 

[3Com-ospf-2] graceful-restart 300