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Beginner

tunning ospf dr/bdr eletction time

Hello. 

I just want to know how to reduce ospf adjacency time. 

When broadcast mode, it takes long time to elect DR/BDR when routers are in 2way state. 

Is there any way to pass quickly this state?

 

Thank you : )

7 REPLIES 7
VIP Expert

DisclaimerThe Author of this

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

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Posting

If there are just two neighbors, you could set their OSPF mode to point-to-point.  Then they will establish adjacency much faster.

Beginner

no way to reduce in broadcast

no way to reduce in broadcast mode? it is broadcast multi-access topology.  

VIP Expert

DisclaimerThe Author of this

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

This for initial adjacency setup, right?  If so, not that I'm aware of (without changing the OSPF mode).

Cisco Employee

Hi, You can configure DR

Hi,

 

You can configure DR priority 0 on DRother routers, so that they will not participate in DR/BDR election. It may help to speed up the DR/BDR election

 

--Pls rate helpful posts--

Regards,

Akash

Beginner

Thank you : )

Thank you : )

Beginner

What you can try doing is

What you can try doing is setting the dead interval command to a number smaller than the default. This will cause faster convergence in an ospf network.

The link provided below documents how to change the dead interval on an interface.

http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/fasthelo.html

 

Router(config-if)# ip ospf dead-interval minimal hello-multiplier 5

This interface subcommand will set the dead-interval to the minimal amount and the hello-multiplier 5 will make it so 5 packets are sent every second

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Beginner

Thank you : 0 !!

Thank you : 0 !!

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