RE: RSVP in real world practice posted 02/14/2007
For MPLS Traffic Engineering yes. For end-user applications
like VoIP not as much. The problem with the integrated services QoS
model is that as the network grows the amount of state information that
the devices in the transit path need to maintain can quickly grow out of
control. Also RSVP is used just to perform reservations in the control
plane of the network, not the data plane. This means that if an end
application requests a 128Kbps guarantee from the network and it is
granted you still need some type of diffserv application (ie MQC QoS) to
enforce the reservation.
Brian McGahan, CCIE #8593 (R&S/SP)
Internetwork Expert, Inc.
Toll Free: 877-224-8987 x 705
Outside US: 775-826-4344 x 705
24/7 Support: http://forum.internetworkexpert.com
Live Chat: http://www.internetworkexpert.com/chat/
From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx] On Behalf Of
Sent: Wednesday, February 14, 2007 7:13 AM
Subject: RSVP in real world practice
Given the scaling difficulties of RSVP, has anyone actually seen it
a production network?
Subscription information may be found at: