Cisco Catalyst 2960 Series, Configuration Manual

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• Stack member number — The number that identifies the switch within the stack. The range is 1 to 8 for
a stack of Catalyst 2960-X switches, and 1 to 4 for a mixed stack of Catalyst 2960-X and Catalyst 2960-S
switches. The switch number is assigned the first time the switch initializes. The default switch number,
before it is integrated into a switch stack, is 1. When a switch has been assigned a stack member number,
it keeps that number until another is assigned to it.
You can use the switch port LEDs in Stack mode to identify the stack member number of a switch.
• Module number — The module or slot number on the switch (always 0).
• Port number — The interface number on the switch. The 10/100/1000 port numbers always begin at 1,
starting with the far left port when facing the front of the switch, for example, gigabitethernet1/0/1 or
gigabitethernet1/0/8. For a switch with 10/100/1000 ports and SFP module ports, SFP module ports are
numbered consecutively following the 10/100/1000 ports.
You can identify physical interfaces by physically checking the interface location on the switch. You can also
use the
show
privileged EXEC commands to display information about a specific interface or all the interfaces
on the switch. The remainder of this chapter primarily provides physical interface configuration procedures.
These are examples of how to identify interfaces on a stacking-capable switch:
• To configure 10/100/1000 port 4 on a standalone switch, enter this command:
Switch(config)# interface gigabitethernet1/0/4
• To configure 10/100/1000 port 4 on stack member 3, enter this command:
Switch(config)# interface gigabitethernet3/0/4
Default Ethernet Interface Configuration
This table shows the Ethernet interface default configuration, including some features that apply only to Layer
2 interfaces.
Table 4: Default Layer 2 Ethernet Interface Configuration
Default Setting Feature
Layer 2 or switching mode ( switchport command). Operating mode
VLANs 1 – 4094. Allowed VLAN range
VLAN 1. Default VLAN (for access ports)
VLAN 1. Native VLAN (for IEEE 802.1Q trunks)
Drop all packets tagged with VLAN 0. 802.1p priority-tagged traffic
Switchport mode dynamic auto (supports DTP). VLAN trunking
All ports are enabled. Port enable state
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
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Information About Configuring Interface Characteristics