Cisco 3750 stack version mismatch

Cisco stackwise is the solution to stack 3750 switches together cab stack 50cm, cab stack 1m, cab stack 3m as you can see there are 3 different lengths. For some reason it wont updowngrade to the correct version. We provide network equipment that reduce the cost of network infrastructure, and is renowned for their customer service and huge supply of robust, costeffective products. If you are adding or removing a switch from the stack, it is very important that the switch is turned off.

When a switch with a different revision of software from the stack master is inserted into the stack, the new switch comes up in version mismatch mode. Can i run cisco catalyst 3750 switches with cisco catalyst 3750 e switches in the same stack. Jun 23, 2011 anytime cisco releases a new ios image for its network switch or router, it is recommended that you upgrade it. Se1 universalk9 firmware as a master and i want to stack to a 3750g16td currently running 12. Cisco 3750 switch stack with different ios images network. Upgrading catalyst 3750 and catalyst 3750e switch stacks.

Tech tips for cisco devices monday, december 1, 2014. Sorting out 3750 stack ios version mismatches and boot sequences is a nightmare that took me a while to feel confident with, but once i understood it i found it works well. If you dont experience network problems, you dont have to upgrade your switches to the latest ios version. Added switch will display a platform mismatch scenario 2. Removing directory to upload new ios on cisco 3750 v98cubes. Cisco catalyst 3750g3750e stacking overclockers uk forums. Highest voted cisco3750 questions network engineering. I have gotten burnt enough that the process i follow is level all to the same version before stacking.

A version mismatch has priority and it gets resolved first. The question seems to be more accurately described as trunking cisco 3850 and 3750. Howto upgrade your stackable 3750 with limited service. Election complete switch 3 booting as member, switch 1 elected master % booting in version mismatch mode. However when the remote technician connected the switches, the logs showed a version mismatch. Catalyst 3750 software configuration guide, release 12. Autocopysoftware process initiated for switch number. Click here to find more information on release notes for catalyst 3750 x and 3560x switches, cisco ios release 12. Se5info 635 bytes extracting info 110 bytes stacking version number. In a mixed stack of catalyst 2960x and catalyst 2960s switches, full stack bandwidth is reduced from 80 gbps to 40 gbps. With the rolling stack update rsu process, downtime to the environment will be reduced from 7. Hi, i am running a 3750e48pd switch with firmware 15. Stack any cisco catalyst 3750 switch in the same stack hardware mixed stack stack any cisco ios software feature set in the same stack software mixed stack one exception is the new lan base models being introduced with the cisco catalyst 3750 x series. When connected to a switch stack, a partially compatible switch enters version mismatch vm mode and cannot join the stack as a fully functional member.

With me here in alabama, and the customer site in new jersey, i had a guy from the customer side do the physical work, while i did a webex session and did the command line work. We have bought four identical 3750x switches with identical swimages. How to add a 3750 in the existick stack of 2 switches. A switch stack is a set of cisco etherswitch service modules or catalyst 3750 switches connected through their cisco stackwise ports.

The master led in the front panel of the 3750 switch turns green when the. Cisco switchingrouting 3750 stack version mismatch feb 18, 20. A switch stack is a set of up to nine stacking capable switches connected through their stackwise plus or stackwise ports. Sep 16, 2008 this example shows a mixed stack of catalyst 3750 e and 3750g switches. Creation and management of catalyst 3750 switch stacks cisco. If the new switch has different software, the switch isnt capable of joining the stack. Or, when you add a switch to the existing stack and the newly added switch has a different cisco ios software release than the existing switch stack, the new switch is unusable. Dont get me wrong, id rather use chassis based switches catalyst 4500 or 6500 but as we all know that money is usually a concern. Posted on april 24, 2014 by routerswitch tech 0 comments. Stack problem with cisco 3750 switches vipergg mis 26 may 08 22.

Replace a failed cisco 3850 switch in a stack youtube. Nov 15, 20 all switches in the stack must be running the lan base image. It also shows the use of some commands that will help to troubleshoot why a stack is not forming properly. You cannot stack 3750 and 3850 switches, the 2 platforms have different type of stacking interfaces and cables. If the switch shows up with version mismatch, you should be able to downgrade. How to stack two cisco 3750 switches solutions experts. If the switch shows up with version mismatch, you should be able to downgrade it with the archive command. I made sure both were running the same ios version 15. I have another cisco 3750 switch 2 that i just added to the rack which doesnt have anything plugged into yet. It might be due to a license version mismatch, verify that all the switches on the stack have the same license level. Newest cisco3750 questions network engineering stack. How to stack two cisco 3750 switches solutions experts exchange. A switch in the stack needs to have the same version of ios as the master to be brought into the fold, so youve got to do get the code on the switch somehow.

In my lifetime toying with 3750 s, this was as simple as. Dec 10, 20 is a world leading cisco networking products wholesaler, are most competitive on cisco switches, like cisco 2960 switches, cisco 3560v2 3560x switches, cisco 3750v2 3750x switches. Hi, i would like to add three 3750x switches to my current production stack of four 3750 switches. All switches in a stack should be running the same cisco ios version or equivalent cisco ios version in the case of mixed catalyst 3750 e and 3750 switch stacks. Tonight, i was tasked to work on a 3750 switch stack of 4 total. One of the cisco etherswitch service modules or catalyst 3750 switches controls the operation of the stack and is called the stack master. Cisco switchingrouting stack c3750g and c3750x major version mismatch cisco switchingrouting wsc3750g24tss1u high cpu utilization in 3750 switch stack cisco switchingrouting wsc3750g48ps unable to update boot path in stack switches. Cisco 3850 stack with a switch in the v mismatch state fyi, this is done in a nonproduction environment.

Thus, the entire stack will now run in the original stackwise. The current state in this case is also version mismatch, which you can see by. Cisco 3850 stack with a switch in the vmismatch state. Added switch to cisco 3750 stack, it didnt come up. I disconnected the 3750x switches and tried to downgrade them to to match the 3750. The stack behaves as a single switching unit that is managed by a master switch elected from one of the member switches. I just booted a 2member stack and got the following message on a show switch command.

Solved cisco 2960x and 2960s mixed stack spiceworks. Aug 31, 2018 1 it is running the same license level using show version command 2 enable autoupgrade on the stack, so when you connect the new switch it upgrades to the same ios on the. All switches have joined the stack, but not all are running the same cisco ios version. Cisco catalyst 3850 seriesautoupgrade feature router. I like using catalyst 3750 stack for user access switch. Sw1 has power, but all indicator lights are on and all switch ports are off regardless if something is connected there or not. In a mixed stack that has catalyst 3750 x, catalyst 3750 e, and catalyst 3750 switch, we recommend that a catalyst 3750 x switch be the master and that all stack members run cisco ios release 12. I made sure both were running the same ios version.

Catalyst 3750 software configuration guide, release. The new switch has a different version of ios on it than the rest of the stack. Dec 02, 2015 we recentlty purchased a cisco 2960x24psl and a cisco 296048fpsl. You can stack cisco 3750x switches in groups of up to 9 switches, and they can then be managed as one switch. So the only way to get the whole stack upgraded is to get the new ios loaded on all of the stack members, then reload. Howto upgrade your stackable 3750 with limited service disruption when you have two or more 3750 in a stack configuration and need to upgrade the image, you will have a long service disruption it can take about 7 10 minutes, because depending on the image the bootloader will be upgraded too and post tests also take their time. When a cisco catalyst 3750 switch stack consists of 3750 12s and other models, make sure to use only the desktop sdm template. All other switches trying to join this stack enter sdmmismatch mode.

This example shows a mixed stack of catalyst 3750 e and 3750g switches. Our customers include cisco resellers, system integrators, ict companies, online retailers etc. Mar 23, 2010 cisco stackwise technology unites up to nine individual cisco catalyst 3750 switches into a single logical unit, using special stack interconnect cables and stacking software. With the other two switches we wanted to do the same thing. The software detects the mismatched software and tries to upgrade or downgrade the switch in vm mode with the switch stack image or with a tar file image from the switch stack flash memory. Aug 09, 2016 catalyst 3750 software configuration guide, release 12. This is an output from the show switch command when an sdm mismatch. Switch does not join the stack switches with the same major version number but a different minor version number are considered partially compatible. Solved how do i properly unstack 2 cisco 3750x switches.

Gig 205 and gig 406 are in no way physically connected to each other neither is. Howto upgrade your stackable 3750 with limited service disruption. Cisco switchingrouting 3750 major version mismatch on. I was getting a version mismatch on the 3750x switches after stacking them all together. One of the switches had a port that had gone bad, and the customer wanted to have this replaced. How to properly form a stack wise and power stack with cisco catalyst 3850 switches. As im dealing with it, the only way to get them to talk again in a stack was to upgrade both to 12. When using a cisco 3750 stack connected through stackwise technology you can add or remove a cisco switch while the stack stays on. When you connect a partially compatible switch to a stack, the new switch might enter version mismatch mode and not join the stack as a functional. In a mixed stack of catalyst 2960x and catalyst 2960s switches, the number of supported stack members is reduced from eight to four. Cisco switchingrouting 3750 stack version mismatch. I am attempting to join two identical cisco 2960x switches into a stack at a remote branch office.

How to stack catalyst 2960s and 2960x networkjutsu. Syncing ios versions on a 3750 stack aarons worthless words. Switches in the stack do not boot the new image version mismatch after the ios upgrade, any one or more of the switches do not boot with the new images. Im able to upgrade the master of a 3750 stack, but the member fails to upgrade. Feb 18, 20 cisco switchingrouting 3750 stack version mismatch feb 18, 20. Make sure you have the cables correctly plugged in for the stack, then turn off the new 3750 and turn it back on. The ios version used must be the same for all switches. I am attempting to make the 2960x the stack master, and the 2960s a member. I have a single cisco 3750 switch 1 that a bunch of servers are hooked up to. I am getting cdp native vlan mismatch logs on my cisco 3750x switch stack. Im hoping that sw2 and sw3 are ok, and im going to work with someone onsite on sunday to try and get them configured correctly. In order to be able to form a switch stack more than 2 switches must be used. The cisco stackwise and stackwise plus solutions are flexible enough to allow you to.

The switch stack operation continues uninterrupted during membership changes unless the stack master is removed or poweredon standalone switches or switch stacks are added. Because each 3750 is essentially an autonomous system, it is possible to stack 3750s with differing versions of software. Issue the command no switch stack membernumber provision command. When the cisco catalyst 3750 e series detects a noneseries cisco catalyst 3750, it will negotiate down from stackwise plus mode to stackwise mode. Cisco switchingrouting 3750 major version mismatch on identical switches apr 3, 2012. How to form a stackwise and powerstack with cisco catalyst. Understanding interface configuration on nm modules.

Cisco switchingrouting 3750 major version mismatch. Removing directory to upload new ios on cisco 3750 cisco. How to add a cisco 3850 to a cisco 3750 stack solutions. Example with two stacked cisco catalyst 3750x switches. You can connect only one switch type in a stack, or you can connect a mix of catalyst 3750 x, catalyst 3750 e, and catalyst 3750 switches in the stack. Stack problem with cisco 3750 switches cisco tektips. Since youll be upgrading the ios image, make sure you have physical access to the switch and you are in front of it. This article explains 7 easy steps to upgrade ios image on a cisco switch or router. I disconnected the 3750x switches and tried to downgrade them to to match the 3750 switches but couldnt becau. Cisco 3750 stack ios upgrade solutions experts exchange. It boots up but the 2960s just hangs with all the port lights on, and when i log into the 2960x i get.

In a stack, if you upgrade the ios on one stack member, then reboot that one stack member to load the new image, most of the time that upgraded stack member cannot rejoin the stack because of a stackwise version mismatch. The statck problem about cisco 3750 cisco network technology. The license level can be verified with the show e command. We recentlty purchased a cisco 2960x24psl and a cisco 296048fpsl. Greetings, so i have two cisco 3650 xes with different ios versions. When i configured a stack between the two 3750, the new switch restarted due the version mismatch different ios.