From: dusth@comcast.net
Date: Tue Sep 06 2005 - 10:37:41 GMT-3
This explaination also apply for IPv6. If router 1 on port 0/1 needs to communicate with r6 on port 0/6 via IPv6 (on same IPv6 subnet), then fall back bridging provides IPv6 communicaiton b/t r1 and r6. Check on the doccd, they have good explanation for fall back bridging. All you need to configure both port 01/ and 0/6 on the same bridge group even though they are on difference vlan, then put brigde x protocol vlan-bridge. Basically, you bridge the vlan instead of bridge the protocal specific like when you configure bridge on router.
Dustin
-------------- Original message --------------
> OK,
>
> Let's say you have Fa0/1, 0/2, 0/3 in vlan 123 and fa0/4, 0/5 and 0/6 in
> vlan 456.
>
> You assign an IP address to the SVI for each of these vlans. Then you
> discover that the device on fa0/1 and fa0/6 need to communicate via a
> non-routable protocol such as Decnet. What you need to do is bridge
> these two vlans together so the non-routable protocol can traverse
> between the two ports.
>
> Basically to get an IP packet from vlan 123 to vlan 456, you would route
> between the two IP subnets associated with the respective SVIs, but as
> you can't route the Decnet, you fallback to being able to bridge Decnet
> between the two vlans.
>
> Chris
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Imal kalutotage
> Sent: Saturday, September 03, 2005 8:42 AM
> To: Stefan Grey
> Cc: ccielab@groupstudy.com
> Subject: Re: Fallback bridging
>
> Hi Chris,
> In what kind of senarios we can use fall-back bridging..
> I have come across senario of IPv6 which uses fall back bridging .
> But now I am blank about it..
> If u can put this topic in a context it is great..
> Cheers,
> Imal
> On 9/2/05, Stefan Grey wrote:
> >
> > Hello group,
> >
> > Could anybody explain shortly what this technology does or give some
> > links where I could read something about it.
> >
> > If found this link:
> >
> >
> http://www.cisco.com/en/US/products/hw/switches/ps646/products_configura
> tion_
> guide_chapter09186a008014f345.html
> >
> >
> > But absolutely didn't understand. Thank you in advance.
> >
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