LevelOne FGL-2870 - Manual (Page 648)

Command Line Interface
4-282
4
edge delay time expires without receiving any RSTP or MSTP BPDUs. Note
that edge delay time (802.1D-2004 17.20.4) equals the protocol migration
time if a port's link type is point-to-point; otherwise it equals the
spanning-tree’s maximum age (page 4-272).
An interface cannot function as an edge port under the following conditions:
- If spanning tree mode is set to STP (page 4-270), edge-port mode can be
manually enabled or set to auto, but will have no effect.
- If loopback detection is enabled (page 4-286) and a loopback BPDU is
detected, the interface cannot function as an edge port until the loopback
state is released (page 4-286).
- If an interface is in forwarding state and its role changes, the interface
cannot continue to function as an edge port even if the edge delay time has
expired.
If the port does not receive any BPDUs after the edge delay timer expires,
its role changes to designated port and it immediately enters forwarding
state (see "Displaying Interface Settings for STA" on page 3-198).
The edge delay time equals the protocol migration time when the port link
type is point-to-point (which is 3 seconds as defined in IEEE 802.3D-2004
17.20.4), otherwise it equals the maximum age for configuration messages
(see spanning-tree max-age on page 4-272).
Example
Related Commands
spanning-tree portfast (4-282)
spanning-tree portfast
This command sets an interface to fast forwarding. Use the no form to disable fast
forwarding.
Syntax
[no] spanning-tree portfast
Default Setting
Disabled
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
• This command is used to enable/disable the fast spanning-tree mode for the
selected port. In this mode, ports skip the Discarding and Learning states, and
proceed straight to Forwarding.
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree edge-port
Console(config-if)#