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Step
3.
Set the number of
OSPF logs.
Filtering outbound LSAs on an interface
To reduce the LSDB size for the neighbor and save bandwidth, you can perform this task on an
interface to filter LSAs to be sent to the neighbor.
To filter outbound LSAs on an interface:
Step
1.
Enter system view.
2.
Enter interface
view.
3.
Filter outbound
LSAs on the
interface.
Filtering LSAs for the specified neighbor
On an P2MP network, a router might have multiple OSPF neighbors with the P2MP type. Perform
this task to prevent the router from sending LSAs to the specified neighbor.
To filter LSAs for the specified neighbor:
Step
1.
Enter system view.
2.
Enter OSPF view.
3.
Filter LSAs for the
specified neighbor.
Configuring GTSM for OSPF
The Generalized TTL Security Mechanism (GTSM) protects the device by comparing the TTL value
in the IP header of incoming OSPF packets against a valid TTL range. If the TTL value is within the
valid TTL range, the packet is accepted. If not, the packet is discarded.
The valid TTL range is from 255 – the configured hop count + 1 to 255.
When GTSM is configured, the OSPF packets sent by the device have a TTL of 255.
GTSM checks OSPF packets from common neighbors and virtual link neighbors. It does not check
OSPF packets from sham link neighbors. For information about GTSM for OSPF sham links, see
MPLS Configuration Guide.
Command
event-log { lsa-flush | peer | spf }
size count
Command
system-view
interface interface-type
interface-number
ospf database-filter { all | { ase [ acl
ipv4-acl-number ] | nssa [ acl
ipv4-acl-number ] | summary [ acl
ipv4-acl-number ] } * }
Command
system-view
ospf [ process-id | router-id router-id
| vpn-instance vpn-instance-name ]
*
database-filter peer ip-address { all
| { ase [ acl ipv4-acl-number ] | nssa
[ acl ipv4-acl-number ] | summary
[ acl ipv4-acl-number ] } * }
96
Remarks
By default, the number of OSPF logs is
10 for each type, including LSA aging
logs, route calculation logs, and
neighbor logs.
Remarks
N/A
N/A
By default, the outbound LSAs are not
filtered on the interface.
Remarks
N/A
N/A
By default, the LSAs for the specified
neighbor are not filtered.
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Table of Contents
Troubleshooting
