Cisco Catalyst 3750 User Manual

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Catalyst 3750 Switch Command Reference
OL-8552-07
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
show spanning-tree
spanning-tree loopguard default Prevents alternate or root ports from becoming the
designated port because of a failure that leads to a
unidirectional link.
spanning-tree mst configuration Enters multiple spanning-tree (MST) configuration mode
through which the MST region configuration occurs.
spanning-tree mst cost Sets the path cost for MST calculations.
spanning-tree mst forward-time Sets the forward-delay time for all MST instances.
spanning-tree mst hello-time Sets the interval between hello 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 an MST region before the
BPDU is discarded and the information held for an
interface is aged.
spanning-tree mst port-priority Configures an interface priority.
spanning-tree mst priority Configures the switch priority for the specified
spanning-tree instance.
spanning-tree mst root Configures the MST root switch priority and timers based
on the network diameter.
spanning-tree port-priority Configures an interface priority.
spanning-tree portfast (global
configuration)
Globally enables the BPDU filtering or the BPDU guard
feature on Port Fast-enabled interfaces or enables the Port
Fast feature on all nontrunking interfaces.
spanning-tree portfast (interface
configuration)
Enables the Port Fast feature on an interface and all its
associated VLANs.
spanning-tree uplinkfast Accelerates the choice of a new root port when a link or
switch fails or when the spanning tree reconfigures itself.
spanning-tree vlan Configures spanning tree on a per-VLAN basis.
Command Description

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