enable Link-state Database overload protection to limit in OSPF

[Mohammed Shoukat Ali]

Dear Experts, 

I need to enable OSPF link-state database overload protection in my production environment and what is the maxim limit to be configure. will it impact the current network if I configure because i have many neighbors are connected.

Find the below my current ospf configuration details.

router ospf 400
router-id 4.4.4.4
ispf
auto-cost reference-bandwidth 10000
area 0 authentication message-digest
timers throttle spf 50 50 5000
timers throttle lsa 0 20 5000
ti

[ammahend]

Can you provide more detail on the platform, show inventory and show version.

[Mohammed Shoukat Ali]

Thanks for your reply, find the below platform details.

show inventory
NAME: "WS-C6509-E", DESCR: "Cisco Systems Catalyst 6500 9-slot Chassis System"
PID: WS-C6509-E

show version
Cisco IOS Software, s72033_rp Software (s72033_rp-ADVENTERPRISEK9-M), Version 15.1(2)SY15, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Tue 23-Jul-19 04:53 by prod_rel_team
ROM: System Bootstrap, Version 12.2(17r)S4, RELEASE SOFTWARE (fc1)
BOOTLDR: Cisco IOS Software, s72033_rp Software (s72033_rp-ADVENTERPRISEK9-M), Version 15.1(2)SY15, RELEASE SOFTWARE (fc2)
System image file is "disk0:s72033-adventerprisek9-mz.151-2.SY15.bin"

[MHM Cisco World]

You want overload ospf but you use lsa throttle which basically delay lsa calculations l.

I think you need to minimize database not delay lsa calculations.

[Mohammed Shoukat Ali]

Thanks for your reply, currently we don't have OSPF link-State database overload protection enabled. need to enable it.

[MHM Cisco World]

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/xe-16/iro-xe-16-book/iro-lk-state-db.html

The dB is protect by Max lsa Not Lsa throttle 

[Mohammed Shoukat Ali]

Thanks for your outstanding support. Yes I need to enable only DB protection, if we enable in current production environment what will be the impact I am sure need downtime for these changes, once I enable maybe it will stops receiving routes.

Thanks

[MHM Cisco World]

https://lpmazariegos.com/2016/04/21/ospf-lsa-spf-throttling/

Check this of how these timer work