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Cisco ME 3400 User Manual

Cisco ME 3400
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15-23
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 15 Configuring MSTP
Configuring MSTP Features
Configuring the Hello Time
You can configure the interval between the generation of configuration messages by the root switch by
changing the hello time.
Note Exercise care when using this command. For most situations, we recommend that you use the
spanning-tree mst instance-id root primary and the spanning-tree mst instance-id root secondary
global configuration commands to modify the hello time.
Beginning in privileged EXEC mode, follow these steps to configure the hello time for all MST
instances. This procedure is optional.
To return the switch to its default setting, use the no spanning-tree mst hello-time global configuration
command.
Configuring the Forwarding-Delay Time
Beginning in privileged EXEC mode, follow these steps to configure the forwarding-delay time for all
MST instances. This procedure is optional.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
spanning-tree mst hello-time seconds Configure the hello time for all MST instances. The hello time
is the interval between the generation of configuration
messages by the root switch. These messages mean that the
switch is alive.
For seconds, the range is 1 to 10; the default is 2.
Step 3
end Return to privileged EXEC mode.
Step 4
show spanning-tree mst Verify your entries.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
spanning-tree mst forward-time seconds Configure the forward time for all MST instances. The forward
delay is the number of seconds a port waits before changing from
its spanning-tree learning and listening states to the forwarding
state.
For seconds, the range is 4 to 30; the default is 15.
Step 3
end Return to privileged EXEC mode.
Step 4
show spanning-tree mst Verify your entries.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.

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Cisco ME 3400 Specifications

General IconGeneral
CategorySwitch
Rack MountableYes
Jumbo Frame SupportYes
Authentication MethodRADIUS, TACACS+
RAM128 MB
Flash Memory32 MB
Power DeviceInternal power supply
ModelME 3400
LayerLayer 2
MAC Address Table Size8000 entries
Remote Management ProtocolSNMP, Telnet, SSH, HTTP, HTTPS
FeaturesVLAN support, IGMP snooping, Quality of Service (QoS)
Compliant StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.3x
Memory128 MB
Power SupplyAC 120/230 V (50/60 Hz)
Dimensions (H x W x D)4.4 cm x 44.5 cm x 24.2 cm
Routing ProtocolStatic routing

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