# OSPF DR/BDR election

**URL:** https://forum.networklessons.com/t/ospf-dr-bdr-election/7436
**Category:** OSPF
**Created:** [June 15, 2019, 5:21am UTC](https://forum.networklessons.com/t/ospf-dr-bdr-election/7436 "2019-06-15T05:21:59Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![apoorv\_jain2293](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/a/d78d45/32.png) [@apoorv\_jain2293](https://forum.networklessons.com/u/apoorv_jain2293)
#### Post date: [June 15, 2019, 5:21am UTC](https://forum.networklessons.com/t/ospf-dr-bdr-election/7436/1 "2019-06-15T05:21:59Z")

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Hello,

In the topic OSPF ABR Type 3 LSA Filtering ([https://networklessons.com/cisco/ccie-enterprise-infrastructureospf-abr-type-3-lsa-filtering-on-cisco-ios](https://networklessons.com/cisco/ccie-enterprise-infrastructureospf-abr-type-3-lsa-filtering-on-cisco-ios)), the R4#show ip ospf neighbor snippet shows that R4 is elected BDR for all the other 3 routers, but shouldn’t it be the opposite i.e. R4 is DR for R1,R2 and R3. As R4 has the highest loopback address.

Also, in the topic, OSPF DR/BDR Election explained ([https://networklessons.com/cisco/ccie-enterprise-infrastructureospf-drbdr-election-explained](https://networklessons.com/cisco/ccie-enterprise-infrastructureospf-drbdr-election-explained)), in the 2 multi-access segments topology R2#show ip ospf neighbor shows that R1 is elected BDR while the text below it says that “R1 is the DR for the 192.168.12.0/24 segment”.

Are these changes correct or have I missed something in the DR/BDR election process?

Thanks,  
Apoorva

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<div class="post-metadata">

### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [June 18, 2019, 6:13am UTC](https://forum.networklessons.com/t/ospf-dr-bdr-election/7436/2 "2019-06-18T06:13:23Z")

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A post was merged into an existing topic: [OSPF ABR Type 3 LSA Filtering on Cisco IOS](https://forum.networklessons.com/t/ospf-abr-type-3-lsa-filtering-on-cisco-ios/1050)

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<div class="post-metadata">

### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [June 18, 2019, 6:13am UTC](https://forum.networklessons.com/t/ospf-dr-bdr-election/7436/3 "2019-06-18T06:13:23Z")

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### Author: ![ReneMolenaar](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/renemolenaar/32/488_2.png) [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)
#### Post date: [July 16, 2019, 7:02am UTC](https://forum.networklessons.com/t/ospf-dr-bdr-election/7436/4 "2019-07-16T07:02:05Z")

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Hi Apoorva,

> [@apoorv\_jain2293](#):
>
> R4#show ip ospf neighbor snippet shows that R4 is elected BDR for all the other 3 routers, but shouldn’t it be the opposite i.e. R4 is DR for R1,R2 and R3. As R4 has the highest loopback address.

R4 should be the DR yes, I just fixed this.

> [@apoorv\_jain2293](#):
>
> in the 2 multi-access segments topology R2#show ip ospf neighbor shows that R1 is elected BDR while the text below it says that “R1 is the DR for the 192.168.12.0/24 segment”.

That’s a typo yes, just fixed this as well.

Thanks for reporting!

Rene