If trunking is used, the mode has to be the same on all ports. For layer 2 channels: All ports have to be either trunks or in the same VLAN. Protocol Status refers generally two the layer to status. GigabitEthernet1/0/27 up 1. The show interfaces status cli command shows you all interfaces. 7c66. The "up" indicator means that your card runs successfully. You can display summary or detailed information on the switch ports using the show port command. show interfaces status | include connected. check the output of this command "show interfaces status err-disabled". This is not available on all IOS versions. What is administratively down Cisco? To see the summary information on all ports on the switch, enter the show interface status command with no arguments. After being up/down, they became err-disabled. Enter both the module number and the port number to see detailed information about the specified port. Cisco switch Link status Up, Protocol down - Super User Any guidance would be appreciated thanks. When a port is in error-disabled state, it is effectively shut down and no traffic is sent or received on that port. sh controllers ethernet-controller gi1/0/1 phy - information about the SFP module into a particular port. No one of the ports can be SPAN (switched port analyzer) destination port. In dealing with the Nexus platforms, Iâve seen the âinactiveâ status show up in four different situations: The VLAN the port was assigned to does not exist on the switch. ⢠down, which indicates that a user disabled the card with the shutdown command ⢠failure, which indicates that the card failed to boot correctly . Cat3550#show interfaces trunk. sh int des | include up. ⦠The physical port might be UP but the protocol might show Down. Fa0/18 trunk 802.1q other 1. If a port is going up adn down it is usually a spanning tree problem. Using SW1#show interface Fa0/1 FastEthernet0/1 is up, line protocol is up (connected) Hardware is Lance, address is 0009. Protocol refers to "Line Protocol", which is a Cisco way of saying "the connection". This document applies to You can bring up an interface having administratively down interface using no shutdown command. If you're seeing up / down, the most likely causes are: Cable fault In order to check to see how long the port is in Up or Down status, use the show interfaces [interface id] command. On the Cisco Catalyst platform, adding a non-existent VLAN to a port will cause the VLAN to be auto-created. show vlan internal usage - used to show vlan. In order to check to see how long the port is in Up or Down status, use the show interfaces [interface id] command. After some search I came to use the "ifOperStatus" with OID 1.3.6.1.2.1.2.2.1.8. GigabitEthernet2/0/1 up 1. So down down indicates a problem with the connection. Enter both the module number and the port number to see detailed information about the specified port. We can verify that a port-channel interface has been created but it is down. You can show all interfaces that are up by: Protocol refers to "Line Protocol", which is a Cisco way of saying "the connection". Basically, up/down means the port is available for a cable/con... SW#show interface g10/17. Displays the general condition of the interface card. R2#show inter fa 0/0. Status long: Refer to the Notification and Interfaces tables for information about the problem After VLAN was created - one node is down and another is UP - you. To display summary information on all of the ports on the switch, enter the show port command with no arguments. The # show run command will show all the ports at one time and their current config. GigabitEthernet2/0/2 down 3. The show interfaces status cli command shows you all interfaces. which will show you the last time the link was active. 11-16-2007 07:44 AM. The configuration is for a port-channel, make sure the configuration is the same on both ends, including the encapsulation (PAGP or LACP). They generally refer to whether Layer 1 is working (line status) and whether Layer 2 is working (protocol status). To see summary information on all ports on the switch, enter the. 3 Answers3. Cisco ethernet interfaces are normally down / down if they don't have a link. Check the cable, or other computer. Chapter 6 Checking Port Status and Connectivity Using Telnet Note TDR is a port test; the port can not handle traffic for the duration of the test (generally, 1 minute). By using command line(ssh), I can get switch interfaces status like belowï¼just demoï¼: Cisco-Switch# show int status Port Name Status Vlan Duplex Speed Eth0/1 test_alias connected 1 a-full a-100 Eth0/2 notconnect 1 auto auto Eth0/3 connected 3 a-full a-100 Eth0/4 connected 3 a-full a-100 Eth0/5 potchann linkFlapE 255 auto auto Eth0/6 notconnect 300 auto auto Eth0/7 sfpAbsent routed ⦠Guidelines The following guidelines apply to the use of TDR: â If you connect a port undergoing a TDR test to an Auto-MDIX enabled port, the TDR result might be invalid. SW#show interface g10/17. Encapsulation ARPA, loopback not set. If it is "ethernet down, line protocol down", then a physical layer problem like cable not connected. sh ip protocols - all of the dynamic routing. If so there are two⦠General commands. Description: This command lists a condensed one line for each logical and physical interface. As shown above, this shows me the IP address assigned to each physical interface, if the port is UP, if the protocol is UP etc. The messages are generated by the switch. The port LED is set to the orange color and, when you issue the show interfaces command, the port status shows as Errdisabled. ⦠show interface port-channel 2. GigabitEthernet2/0/2 up 3. the line... - Cisco Community 06-22-2009 06:17 PM In order to check to see how long the port is in Up or Down status, use the show interfaces [interface id] command. In the example, under the show interfaces FastEthernet0/1 command, look at a line that shows something such as: Last input 00:00:41, output 00:00:00, output hang never. sh ip int bri | include up. The ports were up/down after doing a shut/no shut, and being up/up. Then your script can count them. If only protocol is down, then check if this interface on other connecting device is UP, duplex & speed is matching, encapsulation on both ends is same. The show interfaces sta... If a port is going up adn down it is usually a spanning tree problem. This document is intended to help determine why a port or interface experiences problems. Some other show commands that might provide some good interface information are: # show interfaces advertise # show interfaces configuration # show interface status # show interface description # show interface counters. I wonder what can cause that the first line output of the command "show interfaces" will be: "fastEthernet is up, line protocol is down". For example, one interface might be connected to a Frame Relay connection. Is there any way to show a total count of interfaces that are in status "up" on a cisco router? The purpose is to let a script go through all routers and show a summarization count of "up" interfaces. Then your script can count them. The show interfaces status cli command shows you all interfaces. Cisco has been configured and sent syslog to Splunk as follows: I would like a table to show port status of Cisco switch with format as follows: Interface status count. 04-15-2019 01:24 AM. show interfaces status command with no arguments. FastEthernet0/0 is up, line protocol is up. Each line displays the interface, configured IP address, link status up/down and Administrative status up/down. Hope this helps. what does the switch show e.g. Chapter 6 Checking Port Status and Connectivity Using Telnet Note TDR is a port test; the port can not handle traffic for the duration of the test (generally, 1 minute). View Bug Details in Bug Search Tool. Newer Cisco IOS contain a count parameter that can count lines which match a regex. > op show_interface_status Interface Status VLAN Members Port-mode Speed Duplex Description . Symptom: Hosts connected to a Cisco IP phon supporting Second Port Disconnecte cannot gain access to the gues vlan after a dot1x capable host has been disconnected Conditions: - host mode is single-host - dot1x authentication is use - Phone supports CDP second port disconnecte and CDP is enabled. 3 Answers 3. Protocol refers to "Line Protocol", which is a Cisco way of saying "the connection". Basically, up/down means the port is available for a cable/connection, but doesn't have one. Check the cable, or other computer. Pls rate if helped. Command: show ip interface brief. maybe the port has suffered some continuous up/down. This is not the case on the Nexus platform. Basically, up/down means the port is available for a cable/connection, but doesn't have one. Probable reasons for this are encapsulation and clock rate mismatches. Checking Port Status. 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. GigabitEthernet1/0/27 down 1. When a device is connected to a switchport .. %LINK-3-UPDOWN messages in the log show when the port status. Fa0/19 trunk 802.1q other 1. ii may give you more details. I tried running it with the slax debugger: > op invoke-debugger cli show_interface_status . I run into this problem a lot. If the channel is layer 3, give the address to the port-channel interface, not to single ports. Guidelines The following guidelines apply to the use of TDR: â If you connect a port undergoing a TDR test to an Auto-MDIX enabled port, the TDR result might be invalid. Port Vlans allowed ⦠This will show you the link status for all ports The 45xx line has also some additional useful commands: show int link. If you interface is down, it will display administratively down status. A cable has been plugged in to the port and is connected to a device. You are checking the status of port Fa0/12 on your Cisco 2960 switch. The interfaces that are "up" are in the connected state. All interfaces are operational. The config above was at that point. oper code . The port LED is set to the orange color and, when you issue the show ⦠The interfaces that are "up" are in the connected state. But the problem is that this OID returns "1:up" as soon as a cable is plugged into the port and does not reflect the different status the port might have including: Specify a particular module number to see information on the ports on that module only. Then connect the cable. what does the switch show e.g. Internet address is not set. The config above was at that point. Specify a particular module number to see information on the ports on that module only. The easiest way on Cisco switches is: show int status. sh ip traffic - all traffic through the Cisco. Controller Vlan Operation State down. Link Flapping (up/down) Port Security Violation; Broadcast Storms; When a port is in error-disabled state, it is effectively shut down and no traffic is sent or received on that port. Checking Interface Status You can view the summary or detailed information on the switch ports using the show interface status command. To see the summary information on all ports on the switch, enter the show interface status command with no arguments. Specify a particular module number to see information on the ports on that module only. Interface index is 85886082. Show activity on this post. And if the interface shows up up then we have physical connectivity and the ability to transmit and receive on the interface. Expand Post Port-channel 2 is up, line protocol is down. Symptom: After setting the port to "no nego auto" command, Link lamp and port status is always up, even though the cable is disconnected or the partner port goes down. The configuration is for a port-channel, make sure the configuration is the same on both ends, including the encapsulation (PAGP or LACP). Fa0/17 trunk 802.1q other 1. The show interfaces card-type [slot/port] status command is the equivalent !--- of show port status for CatOS. A switch is in down state when there is nothing connected to the port or if its admin shutdown. Mode of IPv4 Address Assignment: not set. And up down indicates that we believe that we have a valid connection ⦠The ports were up/down after doing a shut/no shut, and being up/up. What does protocol down mean? The two codes are named line status and protocol status. Interface IPv6 oper status: Disabled. Address is 68:4f:64:5f:b7:00, Current address is 68:4f:64:5f:b7:00. We can verify speed and duplex settings by using SW1#show interface Fa0/1 FastEthernet0/1. Letâs check if we have a port-channel interface: SW1#show ip int brief | include Port Port-channel1 unassigned YES unset down down SW2#show ip int brief | include Port Port-channel1 unassigned YES unset down down . I usually start first with the following command: Switch0# show ⦠In the example, under the show interfaces FastEthernet0/1 command, look at a line that shows something such as: Last input 00:00:41, output 00:00:00, output hang never. If you do a "show ip int br" does it shown int vlan 100 down? LAN switch interfaces typically show an interface with both codes with the same value, either up or down. nterface flapping up and down, Cat 4500 L3 switch . show interfaces FastEthernet 1/0/1 status show interfaces gigabitEthernet 2/0/1 transceiver. This is not available on all IOS versions. MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255, txload 1/255, rxload 1/255. This might be a very late reply but here's what I understood so far: The interface status has two parts to it: MTU 1532 bytes, IP MTU 1500 bytes. So I need to read the status of each port via snmp and turn on the LED on my GUI accordingly. 11-16-2007 07:50 AM. Specify a particular module number to see information on the ports on that module only. nterface flapping up and down, Cat 4500 L3 switch . Some vendors set the bridge system ID extension to carry a VLAN ID allowing a different spanning tree per VLAN, such as Cisco's PVST. GigabitEthernet10/17 is down, line protocol is down (notconnect) Hardware is Gigabit Ethernet Port, address is 0006.f612.bac0 (bia 0006.f612.bac0) In mac table, there are no entries. In the example, under the show interfaces FastEthernet0/1 command, look at a line that shows something such as: Last input 00:00:41, output 00:00:00, output hang never. Show Interface on Cisco Switches. Port Mode Encapsulation Status Native vlan. "show interface gi1/0/1" and also check the logs "show log" ... Each time we previously disconnected and reconnected the cable the port status just remained down/down. The | include connected shows only the lines of the output that contain the word "connected". This shows the last time a port sent or received traffic. You can only configure cards with an operational status of "up." The | include connected shows only the lines of the output that contain the word "connected". The line protocol being down indicates a clocking or framing problem.
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