show port capabilities


Switch> (enable)


show port capabilities [mod_num[/port_num]]

Syntax Description:


(Optional) Variable that specifies the number of the module.


(Optional) Variable that specifies the number of the port on the module.

Command Description:

Use the show port capabilities command to display the capabilities of the modules and ports in a switch.


This example shows how to show the port capabilities for module 1, port 1:

Console> (enable) show port capabilities 1/1

Model                    WS-X5530
Port                     1/1
Type                     10/100BaseTX
Speed                    auto,10,100
Duplex                   half,full
Trunk encap type         802.1Q,ISL
Trunk mode               on,off,desirable,auto,nonegotiate
Channel                  1/1-2,1/1-4
Broadcast suppression    percentage(0-100)
Flow control             receive-(off,on),send-(off,on)
Security                 yes
Membership               static,dynamic
Fast start               yes
QOS scheduling           rx-(none),tx-(none)
CoS rewrite              yes
ToS rewrite              IP-Precedence
Rewrite                  yes
UDLD                     Capable
Voice vlan               no

Table below describes the possible fields (depending on the type of port queried) and the values in the show port capabilities command output.

Table: show port capabilities Command Output Fields

Field Description


Module model number


Module number and port number


Port type (for example, 100BASE-FX MM, 100BASE-FX SM, or 10/100BASE-TX)


Port speed setting (for example, auto, 100, or 1000)


Duplex mode (half, full, auto, fdx, hdx, or no)

Trunk encap type

Trunk encapsulation type (ISL, 802.1Q, 802.10, or no)

Trunk mode

Trunk administrative status of the port (on, off, auto, desirable, nonegotiate, or no)


Status of which ports can form a channel group. The ports are shown in mod_num/port_num format. For example, 3/1-2 indicates module 3, ports 1 and 2. In addition, any ports in range [mod/1-mod/high_port] or no ports may be indicated.

Broadcast suppression

Number of packets-per-second (pps) of broadcast/multicast traffic allowed on the port (0 to 150000) or the percentage of total available bandwidth that can be used by broadcast/multicast traffic (0 to 100).

Flow control

Flow-control options that can be set (receive-[off, on, desired], send-[off, on, desired], or no)


Status of whether port security is enabled (yes or no)


Method of membership assignment of a port or range of ports to a VLAN (static or dynamic)

Fast Start

Status of whether the spanning tree port fast-start feature on the port is enabled (yes or no)

QoS Scheduling


CoS Rewrite

Status of whether the port supports COS rewrite (yes or no)

ToS Rewrite

Status of whether the port supports TOS rewrite (IP-Precedence)


Status of whether the port supports inline rewrite (yes or no)


Status of whether the port supports UDLD (Capable, Not capable)

Voice Vlan

Status of whether the port supports voice or VLAN (yes or no)

1These fields will change depending on the system configuration.


If you do not specify a mod_num, the ports on all modules are shown.

If you do not specify a /port_num, all the ports on the module are

Related Commands:



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