Setting The Lsu Transmit Rate - HP HPE FlexNetwork 7500 series Configuration Manual

Step
2. Bind OSPF MIB to an
OSPF process.
3. Enable SNMP notifications
for OSPF.
4. Enter OSPF view.
5. Configure the SNMP
notification output interval
and the maximum number
of SNMP notifications that
can be output at each
interval.

Setting the LSU transmit rate

During LSDB synchronization, if the local router has multiple neighbors, it must send many LSUs to
each neighbor. When a neighbor receives excessive LSUs within a short time period, the following
events might occur:
•
The performance of the neighbor is degraded because too much system resources are used to
process the received LSU packets.
•
The neighbor drops hello packets used for maintaining the neighbor relationship because it is
busy dealing with the LSUs. As a result, the neighbor relationship is torn down. To reestablish a
relationship to the neighbor, the local router must send more LSUs to the neighbor. This
exacerbates the performance degradation.
This task allows you to limit the global LSU transmit rate by setting the LSU transmit interval and the
maximum number of LSUs that can be sent at each interval.
To set the LSU transmit rate:
Step
1. Enter system view.
2. Enable OSPF to
limit the LSU
transmit rate.
Command
ospf mib-binding process-id
snmp-agent trap enable ospf
[ authentication-failure | bad-packet |
config-error | grhelper-status-change
| grrestarter-status-change |
if-state-change | lsa-maxage |
lsa-originate |
lsdb-approaching-overflow |
lsdb-overflow |
neighbor-state-change |
nssatranslator-status-change |
retransmit | virt-authentication-failure
| virt-bad-packet | virt-config-error |
virt-retransmit |
virtgrhelper-status-change |
virtif-state-change |
virtneighbor-state-change ] *
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
snmp trap rate-limit interval
trap-interval count trap-number
Command
system-view
ospf lsu-flood-control [ interval count ]
92
Remarks
By default, OSPF MIB is
bound to the process with the
smallest process ID.
By default, SNMP
notifications for OSPF are
enabled.
N/A
By default, OSPF outputs a
maximum of seven SNMP
notifications within 10
seconds.
Remarks
N/A
By default, OSPF does not
limit the LSU transmit rate.
Inappropriate use of this
command might cause
abnormal routing. As a best
practice, execute this
command with the default
values.