Bandwidth Allocation Control Protocol (Bacp); Working With Bacp - Bay Networks Nautica 200 Reference Manual

Bandwidth Allocation Control Protocol (BACP)

Working with BACP

117237-C Rev. A
If the Forward option is chosen then only those frames in the
Filter table are forwarded, all others are rejected. If the Reject
option is selected, those frames in the table are rejected and all
other options are forwarded. This process applies to the LAN01
path and all paths that have Bridging enabled. Frame Forwarding
or Rejection takes place at the transmitting end of the path.
BACP provides a flexible and effective way to add and remove
bandwidth between two peers.
The BACP protocol negotiates pre-defined options during the
first part of a valid call. When BACP has successfully negotiated
on any of the links, it is then accessible for all of the links for that
particular call.
The BAP protocol is responsible for the negotiations to
coordinate the requests for adding or removing the bandwidth
during the call.
There are two means for requesting additional bandwidth in a
bundle, a Call-Request and a Callback-Request.
To reduce current bandwidth, only one command is implemented
(Link-Drop-Query-Request). BAP defines this procedure for the
two endpoints of the call by adding and dropping links when
certain parameters are met during a call:
• Request permission to add a link to a bundle (Call-Request).
• Request that the peer to add a link to a bundle (via a
Callback-Request).
• Negotiate with the peer to drop a link from a multi-link
bundle (this means that the peer cannot refuse)
(Link-Drop-Query-Request).
Understanding the Technology
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