Simple Loop Prevention Protocol: Difference between revisions

Revision as of 23:41, 18 October 2023

Revision as of 18:59, 15 November 2023

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{{Short description|Protocol developed by Nortel to protect against Layer 2 network loops}}

{{refimprove|date=May 2019}}

'''Simple Loop Prevention Protocol''' ('''SLPP''') in [[computer networking]] is a [[data link layer]] protocol developed by [[Nortel]] (previously acquired by [[Avaya]], now a part of [[Extreme Networks]]) to protect against Layer 2 network loops. SLPP uses a small hello packet to detect network loops. The SLPP protocol checks packets from the originating switch and the peer switch in a [[SMLT]] configuration. Sending hello packets on a per VLAN basis allows SLPP to detect VLAN based network loops for un-tagged as well as tagged IEEE 802.1Q VLAN link configurations. If a loop is detected, the associated port is shut down.