Alcatel-Lucent 060321-10, Rev. B, Справочное руководство CLI

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spantree max-age Distributed Spanning Tree Commands
page 5-22 OmniSwitch CLI Reference Guide March 2011
spantree max-age
Configures the bridge maximum age time value for the flat mode Common and Internal Spanning Tree
(CIST) instance or for a per-VLAN mode VLAN instance. This value is the amount of time, in seconds,
that the Spanning Tree Protocol information learned from the network on any port is retained. This infor-
mation is discarded when it ages beyond the maximum age value.
spantree [cist | vlan vlan_id] max-age seconds
Syntax Definitions
cist The CIST instance (also known as MSTI 0). This parameter is config-
urable in both modes (flat or per-VLAN).
vlan_id An existing VLAN ID number . This parameter is configurable in both
modes (flat or per-VLAN).
seconds Max-age time in seconds. The valid range is 6–40.
Defaults
By default, the bridge maximum age time value is set to 20 seconds.
Platforms Supported
OmniSwitch 10K
Usage Guidelines
•
A low maximum age time causes the Spanning Tree Algorithm to reconfigure more often.
•
If the optional cist or vlan parameter is not specified with this command, the maximum age time is
configured for the CIST instance by default. This is true regardless of which mode (flat or per-VLAN)
is active for the switch.
•
Although the cist and vlan parameters are configurable in both the flat and per-VLAN mode, the speci-
fied maximum age time value is not applied unless the supporting mode (flat for CIST or per-VLAN
for a VLAN instance) is active.
•
Note that for Multiple Spanning Tree Instances (MSTI), the maximum age time value is inherited from
the CIST instance and is not a configurable parameter.
Examples
-> spantree max-age 10
-> spantree cist max-age 10
-> spantree vlan 10 max-age 30
parameter default
cist | vlan vlan_id cist