3Com S7902E Command Reference Manual - page 767
1-35
z
Enable Opaque LSA advertisement and reception with the
opaque-capability enable
command
before enabling the IETF GR capability for OSPF.
z
Before enabling non-IETF GR capability for OSPF, enable OSPF LLS (link local signaling) with the
enable link-local-signaling
command and OOB (out of band resynchronization) with the
enable
out-of-band-resynchronization
command.
z
If the keywords
nonstandard
and
ietf
are not specified when OSPF GR is enabled,
nonstandard
is the default.
Related commands:
enable link-local-signaling
,
enable out-of-band-resynchronization
,
opaque-capability enable
.
Examples
# Enable IETF Graceful Restart for OSPF process 1.
[Sysname] ospf 1
[Sysname-ospf-1] opaque-capability enable
[Sysname-ospf-1] graceful-restart ietf
# Enable non-IETF Graceful Restart for OSPF process 1.
[Sysname] ospf 1
[Sysname-ospf-1] enable link-local-signaling
[Sysname-ospf-1] enable out-of-band-resynchronization
[Sysname-ospf-1] graceful-restart nonstandard
graceful-restart help
Syntax
graceful-restart help
{
acl-number
|
prefix prefix-list
}
undo graceful-restart help
View
OSPF view
Default Level
2: System level
Parameters
acl-number
: Basic or advanced ACL number, in the range 2000 to 3999.
prefix-list
: Name of the specified IP prefix list, a string of 1 to 19 characters.
Description
Use the
graceful-restart help
command to configure for which OSPF neighbors the current router can
serve as a GR Helper. (The neighbors are specified by the ACL or the IP prefix list.)
Use the
undo graceful-restart help
command to restore the default.
By default, the router can serve as a GR Helper for any OSPF neighbor.