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Multicast and bridge-group on cat 6500

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sha90w at gmail

Sep 10, 2007, 6:19 AM

Post #1 of 8 (925 views)
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Multicast and bridge-group on cat 6500

Hi All,

I have 6506 with sup720bxl3, and configure bridge between two SVI.

bridge irb
!
interface Vlan60
no ip address
bridge-group 2
bridge-group 2 spanning-disabled
!
interface Vlan61
no ip address
bridge-group 2
bridge-group 2 spanning-disabled

I can ping through this catalyst, but OSPF don't work. Seems multicast
traffic don't passed through bridge.

Any ideas ?

--
MYL2-RIPE
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adrian at creative

Sep 10, 2007, 6:26 AM

Post #2 of 8 (889 views)
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Re: Multicast and bridge-group on cat 6500 [In reply to]

On Mon, Sep 10, 2007, Michail Litvak wrote:
> Hi All,
>
>
> I have 6506 with sup720bxl3, and configure bridge between two SVI.
>
> bridge irb
> !
> interface Vlan60
> no ip address
> bridge-group 2
> bridge-group 2 spanning-disabled
> !
> interface Vlan61
> no ip address
> bridge-group 2
> bridge-group 2 spanning-disabled
>
> I can ping through this catalyst, but OSPF don't work. Seems multicast
> traffic don't passed through bridge.

Hm, don't you require other stuff?

bridge 2 ?

(Eg, my random non-SVI bridges on software routers have one or more of
bridge-group X protocol ieee; bridge-group X route ip.)

(Is IRB between SVIs in the hardware path on the Sup720? I haven't tried
that.)

Adrian

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sha90w at gmail

Sep 10, 2007, 6:32 AM

Post #3 of 8 (887 views)
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Re: Multicast and bridge-group on cat 6500 [In reply to]

On 9/10/07, Adrian Chadd <adrian [at] creative> wrote:

> I have 6506 with sup720bxl3, and configure bridge between two SVI.
> >
> > bridge irb
> > !
> > interface Vlan60
> > no ip address
> > bridge-group 2
> > bridge-group 2 spanning-disabled
> > !
> > interface Vlan61
> > no ip address
> > bridge-group 2
> > bridge-group 2 spanning-disabled
> >
> > I can ping through this catalyst, but OSPF don't work. Seems multicast
> > traffic don't passed through bridge.
>
> Hm, don't you require other stuff?
>
> bridge 2 ?

I have bridge 1 on this router, without multicast.

(Eg, my random non-SVI bridges on software routers have one or more of
> bridge-group X protocol ieee; bridge-group X route ip.)

On software router config like this worked good (on cisco 3821), no
problem
with multicast.

(Is IRB between SVIs in the hardware path on the Sup720? I haven't tried
> that.)

I don't known exactly.

Adrian
>
>

--
MYL2-RIPE
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sha90w at gmail

Sep 10, 2007, 6:34 AM

Post #4 of 8 (892 views)
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Re: Multicast and bridge-group on cat 6500 [In reply to]

On 9/10/07, Michail Litvak <sha90w [at] gmail> wrote:
>
>
> Hi All,

I have 6506 with sup720bxl3, and configure bridge between two SVI.

And plus IOS - SXF9

bridge irb
> !
> interface Vlan60
> no ip address
> bridge-group 2
> bridge-group 2 spanning-disabled
> !
> interface Vlan61
> no ip address
> bridge-group 2
> bridge-group 2 spanning-disabled
>
> I can ping through this catalyst, but OSPF don't work. Seems multicast
> traffic don't passed through bridge.
>
> Any ideas ?
>
> --
> MYL2-RIPE

--
MYL2-RIPE
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p.mayers at imperial

Sep 10, 2007, 2:02 PM

Post #5 of 8 (894 views)
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Re: Multicast and bridge-group on cat 6500 [In reply to]

On Mon, 2007-09-10 at 16:19 +0300, Michail Litvak wrote:
> Hi All,
>
>
> I have 6506 with sup720bxl3, and configure bridge between two SVI.
>
> bridge irb
> !
> interface Vlan60
> no ip address
> bridge-group 2
> bridge-group 2 spanning-disabled
> !
> interface Vlan61
> no ip address
> bridge-group 2
> bridge-group 2 spanning-disabled
>
> I can ping through this catalyst, but OSPF don't work. Seems multicast
> traffic don't passed through bridge.

I seriously doubt this will work well on a 6500; it's undoubtedly done
in software on the MSFC, and the mantra is "if it isn't supported in
hardware, it's not supported".

I'd look for other alternatives

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branto at branto

Sep 10, 2007, 2:12 PM

Post #6 of 8 (881 views)
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Re: Multicast and bridge-group on cat 6500 [In reply to]

Why disable spaning-tree on the SVIs at all?

Add the following:

bridge 2 proto vlan-bridge
bridge 2 route ip

-Brant

On 9/10/07 5:02 PM, "Phil Mayers" <p.mayers [at] imperial> wrote:

> On Mon, 2007-09-10 at 16:19 +0300, Michail Litvak wrote:
>> Hi All,
>>
>>
>> I have 6506 with sup720bxl3, and configure bridge between two SVI.
>>
>> bridge irb
>> !
>> interface Vlan60
>> no ip address
>> bridge-group 2
>> bridge-group 2 spanning-disabled
>> !
>> interface Vlan61
>> no ip address
>> bridge-group 2
>> bridge-group 2 spanning-disabled
>>
>> I can ping through this catalyst, but OSPF don't work. Seems multicast
>> traffic don't passed through bridge.
>
> I seriously doubt this will work well on a 6500; it's undoubtedly done
> in software on the MSFC, and the mantra is "if it isn't supported in
> hardware, it's not supported".
>
> I'd look for other alternatives
>
>
> _______________________________________________
> cisco-nsp mailing list cisco-nsp [at] puck
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/

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adrian at creative

Sep 10, 2007, 6:07 PM

Post #7 of 8 (879 views)
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Re: Multicast and bridge-group on cat 6500 [In reply to]

On Mon, Sep 10, 2007, Phil Mayers wrote:

> > I can ping through this catalyst, but OSPF don't work. Seems multicast
> > traffic don't passed through bridge.
>
> I seriously doubt this will work well on a 6500; it's undoubtedly done
> in software on the MSFC, and the mantra is "if it isn't supported in
> hardware, it's not supported".
>
> I'd look for other alternatives

I'm pretty sure a piece of cable between two ports on different VLANs
is a supported option on a 6500. Not that its a new idea..

Adrian

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lists at hojmark

Sep 12, 2007, 1:24 PM

Post #8 of 8 (873 views)
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Re: Multicast and bridge-group on cat 6500 [In reply to]

> I have 6506 with sup720bxl3, and configure bridge between two
> SVI.
>
> bridge irb

IRB is not supported in 12.2SX. See http://tinyurl.com/2ef8nw

You can bridge non-routable protocols (A.K.A fallback-bridging)
between SVIs (A.K.A. VLAN interfaces), but it's done in software
on the MSFC, it doesn't work for IP (routable, obviously), and
you'll need to configure all the standard L3 on both SVIs.

-A

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