Switch stack ports down. Jun 18, 2012 · if it does not join the stack with t...
Switch stack ports down. Jun 18, 2012 · if it does not join the stack with the know working cable then you can have a problem with the Stack ports on the switch, if the unit is under warranty or smarnet contract you can also open a TAC case for the replacement. Seems that one or both stack ports on switch 3 and 4 are down. Now we notice stack ports are down. And if any switch is turned off, say stack switch member 2 is powered down. All the commands I see only report on status of the switchstack. Among various configurations, the concept of switch stacking—particularly with Cisco switches—stands out as a robust solution for streamlining network management and enhancing performance. Check cable. Make a Trunk port between Stack switch and Switch B (same case as above) 4. Make a Trunk port between Stack switch and Switch A (if you have more ports, make a port-channel in case 1 link fail other can take care) spread the links stack different switch, 3. Nov 26, 2019 · You can also configure stack MAC persistency so that the stack MAC address never changes to the new active switch MAC address, by using the stack-mac persistent timer 0 command. . This guide delves into the essence of stackable switches, their advantages Jun 5, 2013 · %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state DOWN Interestingly enough, once the bad cable was removed from the stack, ALL of the issues with the switch stack were resolved. Anyone has experience on this? Thanks Bad cables can cause the stack port to flap or go down completely. and did not see any lights abnormal. but why ports are down. I can't figure out why two of the ports are down? SW1 port 2 connects to SW4 port 2. Ports 2/1 and 1/2 are showing DOWN I replaced the cable, but it is still DOWN SWH_STACK_02#sh switch stack-ports sum Sw#/Port# Port Status Neighbor Cable Length Link OK Link Active Sync OK Mar 12, 2013 · 03-13-2013 07:09 AM tested the stack cable on a brand new switch and it detected the cable on both stack ports. I have verified all the settings but still getting an error message when I add my interfaces to the port-channel. May 20, 2025 · When both stack ports are used on the MS410-32 switches, the stack status keeps flapping — showing 'UP/Down' in the logs continuously. Oct 18, 2024 · In the realm of networking, the efficiency and reliability of your infrastructure hinge on the strategic deployment of switches. This avoids Link Aggregation Control Protocol (LACP) and Port Aggregation Protocol (PAgP) flaps or inconsistencies. Mar 4, 2022 · 2. Oct 5, 2021 · Hi we have stack switch 9300. Jun 6, 2025 · Solved: New switches are stacked together. To reenable use 'stacking member 4 stack-port 1 enable'. I already rebooted the s 6 days ago · I am trying to create a port-channel on my Cisco 1300 switch stack. Explore the models. at this pint i know its one of the switch stack ports that are the issue. i was wondering if there was a way to see if the port was administrativly "down". Sep 22, 2021 · Solved: Hello, We have a pair of Cisco 9200L in a stack. Dec 22, 2015 · We have (4) Catalyst 3850 switches, configured as a stack. Feb 15, 2010 · Solved: hi, If we use 4 stackable 3750 switches ( connected in chain to form a single logical switch of 96 ports ) and configured the ports in different VLANs. Nov 7, 2024 · This document describes how to troubleshoot unexpected reloads due to stack issues on Catalyst 9000 switches. Sep 16, 2008 · The master switch revises the new member switch port numbers to conform to the current port numbering sequence in the stack. Any existing port-level configuration in the newly-added switch is automatically cleared or updated. I think this might be caused by connection loose. If there are an excessive number of port flaps, the port is disabled and the following log message appears: W 10/06:00 23:23:16 03260 chassis: ST4-CMDR: Stack port 1 disabled due to excessive errors. The master switch revises the new member switch port numbers to conform to the current port numbering sequence in the stack. Meraki MS Switches combine enterprise-grade hardware with cloud management, allowing your organization to scale effortlessly. If I use only one port for stacking, it works normally. Is there a way to bring the port up? I read the guide on configuring stacks, but it makes it sound like the only time the ports would be down is b/c the cable is bad. When you add a switch to a stack, the stack master automatically changes the configuration of the new switch. How do I troubleshoot this? I don't see any commands to re-establish the stackports. CiscoStack1#show Nov 12, 2025 · Diagnose why a switch stops recognizing stack members using CLI commands, identify physical and software causes, and prevent future stack splits. same model c9300, ios version and license. Sep 14, 2012 · I have a stack of 4 switches. Do you think anything else can cause the issue? Does the stack port has light which shows the port status down or up? Thank you Jun 21, 2022 · I tried running: "stack-port twentygigabitethernet 1/0/2 shutdown" twice and "show switch stack-ports" , but the port link status also shutdown. Remove the Link between Switch A and B, this will have no spanning-tree loops. uqfpdjqeqhxzdamgfzkngexncjfajelmorkunzhooeqprdyopxz