# Troubleshooting IPv6 Redistribution

**URL:** <https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203>\
**Category:** Lessons Discussion\
**Created:** [December 28, 2016, 12:04am UTC](https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203 "2016-12-28T00:04:55Z")\
**Posts on this page:** 7\
**Page:** 1

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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:** [December 28, 2016, 12:04am UTC](https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203/1 "2016-12-28T00:04:55Z")

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This topic is to discuss the following lesson:

> **[Troubleshooting IPv6 Redistribution](https://networklessons.com/ipv6/troubleshooting-ipv6-redistribution)**
>
> This lesson helps to troubleshoot a common IPv6 redistribution problem on Cisco IOS routers.

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**Author:** ![Fabian\_Martinez1](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/f/8797f3/32.png) [@Fabian\_Martinez1](https://forum.networklessons.com/u/Fabian_Martinez1)\
**Post date:** [June 2, 2016, 2:24am UTC](https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203/2 "2016-06-02T02:24:03Z")

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Hello,

So we can use the “include connected” as opposed to the following command and it will have the same affect then right?

```auto
ipv6 router ospf 6
 log-adjacency-changes
 redistribute rip RIPNG metric 1
ipv6 router rip RIPNG
 redistribute connected metric 1&lt;--------
 redistribute ospf 6 metric 1

```

Thanks

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<div class="post-metadata">

**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:** [June 3, 2016, 11:58am UTC](https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203/3 "2016-06-03T11:58:41Z")

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Hi Fabian,

That’s right. The “redistribute connected” will redistribute any directly connected interfaces into the routing protocol. It will also redistribute directly connected interfaces that are not advertised in any IPv6 routing protocol.

Rene

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<div class="post-metadata">

**Author:** ![Fabian\_Martinez1](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/f/8797f3/32.png) [@Fabian\_Martinez1](https://forum.networklessons.com/u/Fabian_Martinez1)\
**Post date:** [June 5, 2016, 8:36pm UTC](https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203/4 "2016-06-05T20:36:37Z")

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Hi Rene,

Thanks for reply, I found something interesting though. When setting up redistribution i didn’t have to add a metric command under ospf 6 and it worked fine, does this mean OSPFv3 adds a metric already? Because with no metric command under RIPNG, no routes will get redistributed.

```auto
ipv6 router ospf 6
 log-adjacency-changes
 redistribute rip RIPNG include-connected &lt;------
!
ipv6 router rip RIPNG
 redistribute ospf 6 metric 1 include-connected

```

Thanks

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<div class="post-metadata">

**Author:** ![andrew](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/andrew/32/645_2.png) [@andrew](https://forum.networklessons.com/u/andrew)\
**Post date:** [June 8, 2016, 7:02pm UTC](https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203/5 "2016-06-08T19:02:05Z")

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Hi Fabian,  
What you have discovered is a difference in how those routing protocols deal with redistribution in general, as opposed to IPv6 specifically. It is interesting that Link-State protocols don’t require specifying a metric when redistributing into them. For example, OSPF assigns a default metric of “20” in this case, while IS-IS assigns a metric of zero.

Distance Vector protocols, however, like RIP and EIGRP require you to set some kind of seed metric, or they won’t be advertised.

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**Author:** ![ryandm1776](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/r/9fc29f/32.png) [@ryandm1776](https://forum.networklessons.com/u/ryandm1776)\
**Post date:** [May 1, 2017, 5:44pm UTC](https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203/6 "2017-05-01T17:44:03Z")

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Hi, I’d like to see (maybe I’m not finding it), an IPv6 redistribution example between BGP and IGPs.

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<div class="post-metadata">

**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 6, 2017, 2:36pm UTC](https://forum.networklessons.com/t/troubleshooting-ipv6-redistribution/1203/7 "2017-07-06T14:36:41Z")

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I don’t have any lessons covering IPv6 BGP redistribution but it is pretty straight forward. Here’s a quick example to redistribute OSPFv3 routes into BGP:

```
R1(config)#router bgp 1
R1(config-router)#address-family ipv6   
R1(config-router-af)#redistribute ospf 1

```