[c-nsp] RSPAN over WAN/MAN

[Matthew Huff]

Unless I missed something, no one mentioned ERSPAN. If you platform supports it, then ERSPAN is much simpler. It encapsulates the packets so you can forward them over any L3.

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> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Aaron
> Sent: Wednesday, February 3, 2016 10:13 AM
> To: 'Nick Hilliard' <nick at foobar.org>; 'Steven Pfister'
> <SPfister at dps.k12.oh.us>
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] RSPAN over WAN/MAN
> 
> I do rspan over mpls pseudowire nicely... perhaps that's why it works is
> because p2p pw's don't learn mac's.
> 
> Aaron
> 
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Nick Hilliard
> Sent: Tuesday, February 2, 2016 2:38 PM
> To: Steven Pfister <SPfister at dps.k12.oh.us>
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] RSPAN over WAN/MAN
> 
> Steven Pfister wrote:
> > At first, I thought RSPAN. I've never done an RSPAN session, but I got
> > it working in a test setup at the central site. I tried the same thing
> > with the remote site, but can't get anything but broadcasts.
> 
> rspan works by transmitting traffic across vlans which have mac learning
> disabled, so therefore they unicast-flood all traffic across all ports
> in the vlan.  If you're transmitting this traffic across multiple
> switches, you need to make sure that the intermediate switches have mac
> learning disabled on the rspan vlan, or else that they're configured as
> rspan-specific vlans.
> 
> Nick
> 
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