[c-nsp] prioritize VoIP and Skype traffic in office routers

[Mark Tinka]

On Thursday, February 02, 2012 08:58:53 AM Martin T wrote:

> I thought manual RSVP reservation. For example there are
> four routers:
> 
> gateway_A <-> ISP_router_A <-> ISP_router_B <-> gateway_B
> 
> "gateway_A" and "gateway_B" would be under my management.
> I thought to configure "ip rsvp sender" and "ip rsvp
> reservation" to both gateway devices, but as much as I
> understand, this still requires ISP to configure it's
> router interfaces for handling RSVP requests.

You're talking about IntServ, which was signaling of 
reservations via RSVP on a global basis. 

This never quite took off, as there was no feasible way to 
scale the Internet if it was full of RSVP reservations 
across many different ISP's.

Even DSCP rarely cross AS boundaries (by rarely I mean that 
you can find DSCP crossing AS boundaries in VPN NNI 
arrangements, but not much else).

> I don't expect my QoS policy to be implemented end-to-end
> as my ISP doesn't support this. All I would like to
> insure is that prioritized traffic(VoIP and Skype) would
> get processed in my routers as fast as possible.

Okay, that makes sense then.

As some posters have already mentioned, if you're trying to 
avoid congestion or microburst-induced drops at your border 
router, then implementing QoS there might certainly help to 
ensure you deliver your important traffic to the ISP first.

Mark.
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