Switch designed for mirroring tap ports

Jay Moran jay+NANOG at tp.org
Thu Mar 1 02:11:39 CST 2012


We've had very good success using Brocade MLX's for this very thing
(actually, might be older XMRs, but should be same platform at this point).
Check out the transparent-hw-flooding command under a VLAN. It basically
turns off mac learning, and just floods it on the vlan's member ports.

If you want to be creative and say split out port 80 traffic to one port
and the rest to another, you can use policy based routing to change the
destination VLAN for just tcp/80 traffic.

If you want to have many different inputs going to many different outputs
some with PBR, some without, then you may have to get very creative and use
cables coming out of one port on the box and going back into another port.

We're using this successfully with multiple 10GE ports.

Jay Moran

On Thu, Mar 1, 2012 at 3:12 PM, A. Pishdadi <apishdadi at gmail.com> wrote:

> Hello All,
> We are looking for a switch or a device that we can use for mirroring tap
> ports. For example , take a mirror port off of a core router say a 6509,
> connect it to a port on said device, say port 1. I would like then to be
> able to mirror port 1 on said device to multiple ports,  like port 2 , 3,
> 4. We have the need to analyze traffic from one port on multiple devices.
> Seems most switches are limited to mirroring to a max of 1 or 2 ports.
> Any suggestions would be great.
> Thanks,
> Ameen

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