Cisco port status command

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The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language. The Catalyst series switch is a modular system. You can see which modules are installed, and the MAC address ranges and version numbers for each module, by entering the show module command. You can view the summary or detailed information on the switch ports using the show interface status command.

Cisco port status command

Optional Number of the module. If you do not specify a number, the ports on all modules are shown. Optional Number of the port on the module. If you do not specify a number, all the ports on the module are shown. Status of the port connected, notconnect, connecting, standby, faulty, inactive, shutdown, disabled, or monitor. Duplex setting for the port auto, full, fdx, half, hdx, a-half, a-hdx, a-full, a-fdx. Number of frames with alignment errors frames that do not end with an even number of octets and have a bad CRC received on the port. Number of transmit errors that occurred on the port indicating that the internal transmit buffer is full. Number of receive errors that occurred on the port indicating that the internal receive buffer is full. Number of received frames less than 64 octets long but are otherwise well-formed. Number of times one collision occurred before the port successfully transmitted a frame to the media. Number of times multiple collisions occurred before the port successfully transmitted a frame to the media. Number of excessive collisions that occurred on the port indicating that a frame encountered 16 collisions and was discarded. Number of times the port sensed a carrier to determine whether the cable is currently being used. Number of received runt frames frames that are smaller than the minimum IEEE

I just checked on an EX and yes the command structure for ELS is indeed "interface" versus "interfaces". I'll have

It can be very useful at troubleshooting connectivity issues and physical port issues, check the status of physical ports, watch how much traffic is passing through the interface, which IP address is assigned to the interface for Layer3 interfaces etc. This command works on both Cisco Switches and Cisco Routers and has the same functionality on both types of devices. On a Layer 2 switch we can check the status and various other counters and metrics for each physical ethernet interface or for every interface on the device. The above gives me a quick status update of each available interface on the switch, on which VLAN it belongs, speed settings etc. Now if you want to dive deeper in the counters for each physical interface, we can be more specific as shown below:. The most important data you need to take into consideration are the following:.

This chapter describes how to check switch port status and connectivity on the Catalyst series switch. This chapter includes the following major sections:. The Catalyst series switch is a multimodule system. You can see which modules are installed, as well as the MAC address ranges and version numbers for each module, by entering the show module command. This example shows how to check module status for all modules on your switch:. You can view summary or detailed information on the switch ports using the show interfaces status command. To see summary information on all ports on the switch, enter the show interfaces status command with no arguments.

Cisco port status command

This chapter describes how to check switch port status and connectivity on the Catalyst enterprise LAN switches. The Catalyst enterprise LAN switches are multimodule systems. You can see what modules are installed, as well as the MAC address ranges and version numbers for each module, by using the show module command. The Catalyst G, G, and G switches are fixed-configuration switches, but are logically modular. You must apply configuration commands to the appropriate module.

Methstream

The maximum number of hops identified in the path is ten. I think I have edit the script to now work with ELS code. If you have interface errors the reliability factor will decrease. Bias-Free Language. The traceroute mac ip command output shows the Layer 2 path when the specified source and destination IP addresses belong to the same subnet. Skip to main content Press Enter. A to E4AA. A customer asked for some help on this the other day. On a Layer 3 router, the show interface command is equally important to obtain crucial information about each interface for various purposes. Example This example shows how to use the traceroute command to display the route that a packet takes through the network to reach its destination: Switch traceroute ip ABA. Posted view attached. A ping returns one of the following responses:. Network or host unreachable—If there is no entry in the route table for the host or network, a Network or Host Unreachable message is returned.

If you connect a port undergoing a TDR test to a BASE-T port such as that on the device, the unused pairs and are reported as faulty because the remote end does not terminate these pairs. Due to cable characteristics, you should run the TDR test multiple times to get accurate results.

An ACL is a packet filtering mechanism which controls IP packets passing through the interface block or allow based on IP address and port numbers. CDP must be enabled on all the devices in the network. RE: Any Command? If the IP address is not resolved, the path is not identified, and an error message appears. The physical port might be UP but the protocol might show Down. The Layer 2 traceroute feature allows the switch to identify the physical path that a packet takes from a source device to a destination device. This example shows how to ping a remote host from normal executive mode: Switch ping labsparc Type escape sequence to abort. To set the logout timer, enter this command: Switch config-line exec-timeout minutes seconds This command changes the logout timer value a timeout value of 0 prevents idle sessions from being disconnected automatically. All switches in the path must be reachable from this switch. Hardware is Lance, address is b. The above counters are useful to check how much traffic has passed through the interface the last 5 minutes. Use the no keyword to return to the default value. If you specify a multicast source or destination MAC address, the path is not identified, and an error message appears.