Command Line Interface
4-240
4
Related Commands
spanning-tree portfast (4-240)
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.
• Since end-nodes cannot cause forwarding loops, they can be passed through
the spanning tree state changes more quickly than allowed by standard
convergence time. Fast forwarding can achieve quicker convergence for
end-node workstations and servers, and also overcome other STA related
timeout problems. (Remember that fast forwarding should only be enabled for
ports connected to a LAN segment that is at the end of a bridged LAN or for
an end-node device.)
• This command is the same as
spanning-tree edge-port
, and is only included
for backward compatibility with earlier products. Note that this command may
be removed for future software versions.
Example
Related Commands
spanning-tree edge-port (4-239)
spanning-tree port-bpdu-flooding
This command floods BPDUs to other ports when spanning tree is disabled globally
or disabled on a specific port. Use the
no
form to restore the default setting.
Syntax
[
no
]
spanning-tree
port-bpdu-flooding
Default Setting
Enabled
Console(config)#interface ethernet 1/5
Console(config-if)#bridge-group 1 portfast
Console(config-if)#
Содержание iES4028F
Страница 1: ...iES4028F 4028FP 4024GP ...
Страница 2: ...iES4028F iES4028FP iES4024GP E082008 ST R03 149100041800A 149100040200A 149100041700A 149100000020A ...
Страница 4: ...iv This page is intentionally left blank ...
Страница 10: ...x This page is intentionally left blank ...
Страница 28: ...Contents xxviii This page is intentionally left blank ...
Страница 32: ...Tables xxxii This page is intentionally left blank ...
Страница 46: ...Introduction 1 10 1 This page is intentionally left blank ...
Страница 336: ...Configuring the Switch 3 280 3 This page is intentionally left blank ...
Страница 688: ...Command Line Interface 4 352 4 This page is intentionally left blank ...
Страница 702: ...Glossary Glossary 8 This page is intentionally left blank ...
Страница 710: ...Index 8 Index This page is intentionally left blank ...
Страница 711: ...This page is intentionally left blank ...
Страница 712: ...iES4028F 4028FP 4024GP ...