Cisco Catalyst 3750 User Manual

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Catalyst 3750 Switch Command Reference
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Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
spanning-tree mst forward-time
spanning-tree mst forward-time
Use the spanning-tree mst forward-time global configuration command to set the forward-delay time
for all multiple spanning-tree (MST) instances. The forwarding time specifies how long each of the
listening and learning states last before the interface begins forwarding. Use the no form of this
command to return to the default setting.
spanning-tree mst forward-time seconds
no spanning-tree mst forward-time
Syntax Description
Defaults The default is 15 seconds.
Command Modes Global configuration
Command History
Usage Guidelines Changing the spanning-tree mst forward-time command affects all spanning-tree instances.
Examples This example shows how to set the spanning-tree forwarding time to 18 seconds for all MST instances:
Switch(config)# spanning-tree mst forward-time 18
You can verify your setting by entering the show spanning-tree mst privileged EXEC command.
Related Commands
seconds Length of the listening and learning states. The range is 4 to 30 seconds.
Release Modification
12.1(14)EA1 This command was introduced.
Command Description
show spanning-tree mst Displays MST information.
spanning-tree mst hello-time Sets the interval between hello bridge protocol data units (BPDUs)
sent by root switch configuration messages.
spanning-tree mst max-age Sets the interval between messages that the spanning tree receives
from the root switch.
spanning-tree mst max-hops Sets the number of hops in a region before the BPDU is discarded.

Cisco Catalyst 3750 Specifications

General

Device Type	Switch
Switching Capacity	32 Gbps
Forwarding Rate	38.7 Mpps
Stacking Bandwidth	32 Gbps
RAM	128 MB
Jumbo Frame Support	Yes
Switch Type	Managed
Model	Catalyst 3750 Series
Uplink Interfaces	SFP
Form Factor	Rack-mountable
MAC Address Table Size	12, 000 entries
Routing Protocol	RIP, OSPF, EIGRP
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Layer 3 switching, Layer 2 switching, auto-negotiation, BOOTP support, ARP support, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, traffic shaping, MAC address filtering, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco EnergyWise technology
Power over Ethernet (PoE)	PoE
Operating Temperature	-5 - 45 °C
Operating Humidity	10% to 85% non-condensing