Fixed Filter; Shared Explicit; Wildcard; Bandwidth Reservation - Extreme Networks BlackDiamond 6800 MPLS Installation And User Manual

Configuring RSVP-TE
The following sections describe the three reservation styles:

• Fixed filter

• Shared explicit

• Wildcard

Fixed Filter
The fixed filter (FF) reservation style uses a distinct reservation and an explicit sender
selection. A fixed filter reservation creates a distinct reservation for data packets for a
particular sender.
Shared Explicit
The shared explicit (SE) reservation style uses a shared reservation and an explicit
sender selection. A shared explicit reservation creates a single reservation that is shared
by selected upstream senders. This style permits a receiver to specify the set of senders
to be included.
The Extreme MPLS implementation does not support SE reservation style.
Wildcard
The wildcard (WF) reservation style uses the shared reservation and wildcard sender
options. A wildcard reservation creates a single reservation that is shared by data flows
from all upstream senders.
The Extreme MPLS implementation does not support WF reservation style.

Bandwidth Reservation

As mentioned previously, RSVP reservations are unidirectional in nature. The source
initiates the reservation procedure by transmitting a path message containing a Sender
Tspec object. The Tspec describes the source traffic characteristics in terms of peak data
rate, average data rate, burst size, and minimum/maximum packet sizes. The path
message can also contain an optional AdSpec object that is updated by network
elements along the path to indicate information such as the availability of particular
QoS services, the maximum bandwidth available along the path, the minimum path
latency, and the path maximum transmission unit (MTU).
5-6 MPLS Module Installation and User Guide