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 using a cisco 3750 stack connected through stackwise technology you can add or remove a cisco switch while the stack stays on. Howto upgrade your stackable 3750 with limited service. Catalyst 3750 software configuration guide, release. The license level can be verified with the show e command. The ios version used must be the same for all switches. In a mixed stack of catalyst 2960x and catalyst 2960s switches, the number of supported stack members is reduced from eight to four. How to form a stackwise and powerstack with cisco catalyst. 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. Howto upgrade your stackable 3750 with limited service disruption. I disconnected the 3750x switches and tried to downgrade them to to match the 3750 switches but couldnt becau. The new switch has a different version of ios on it than the rest of the stack.
Because each 3750 is essentially an autonomous system, it is possible to stack 3750s with differing versions of software. How to stack catalyst 2960s and 2960x networkjutsu. How to add a 3750 in the existick stack of 2 switches. I made sure both were running the same ios version. If you are adding or removing a switch from the stack, it is very important that the switch is turned off. Issue the command no switch stack membernumber provision command. If you dont experience network problems, you dont have to upgrade your switches to the latest ios version. The current state in this case is also version mismatch, which you can see by.
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. Gig 205 and gig 406 are in no way physically connected to each other neither is. A switch stack is a set of up to nine stacking capable switches connected through their stackwise plus or stackwise ports. Thus, the entire stack will now run in the original stackwise. Added switch will display a platform mismatch scenario 2. Cisco 3850 stack with a switch in the vmismatch state. Jun 23, 2011 anytime cisco releases a new ios image for its network switch or router, it is recommended that you upgrade it. 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. 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. I am getting cdp native vlan mismatch logs on my cisco 3750x switch stack. Cisco switchingrouting 3750 major version mismatch. 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.
Removing directory to upload new ios on cisco 3750 cisco. I am attempting to make the 2960x the stack master, and the 2960s a member. Syncing ios versions on a 3750 stack aarons worthless words. In my lifetime toying with 3750 s, this was as simple as. Election complete switch 3 booting as member, switch 1 elected master % booting in version mismatch mode. All switches have joined the stack, but not all are running the same cisco ios version. As im dealing with it, the only way to get them to talk again in a stack was to upgrade both to 12. It might be due to a license version mismatch, verify that all the switches on the stack have the same license level. 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.
Se1 universalk9 firmware as a master and i want to stack to a 3750g16td currently running 12. This example shows a mixed stack of catalyst 3750 e and 3750g switches. It also shows the use of some commands that will help to troubleshoot why a stack is not forming properly. Cisco 3850 stack with a switch in the v mismatch state fyi, this is done in a nonproduction environment. A switch stack is a set of cisco etherswitch service modules or catalyst 3750 switches connected through their cisco stackwise ports. Se5info 635 bytes extracting info 110 bytes stacking version number. 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 the switch shows up with version mismatch, you should be able to downgrade it with the archive command. Click here to find more information on release notes for catalyst 3750 x and 3560x switches, cisco ios release 12. Tonight, i was tasked to work on a 3750 switch stack of 4 total. 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. 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.
Sep 16, 2008 this example shows a mixed stack of catalyst 3750 e and 3750g switches. Cisco switchingrouting 3750 major version mismatch on identical switches apr 3, 2012. 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. The master led in the front panel of the 3750 switch turns green when the.
Hi, i am running a 3750e48pd switch with firmware 15. Solved cisco 2960x and 2960s mixed stack spiceworks. Hi, i would like to add three 3750x switches to my current production stack of four 3750 switches. 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. How to stack two cisco 3750 switches solutions experts exchange. Feb 18, 20 cisco switchingrouting 3750 stack version mismatch feb 18, 20. I like using catalyst 3750 stack for user access switch. 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.
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. Replace a failed cisco 3850 switch in a stack youtube. 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. Tech tips for cisco devices monday, december 1, 2014. Cisco 3750 stack ios upgrade solutions experts exchange. Dec 02, 2015 we recentlty purchased a cisco 2960x24psl and a cisco 296048fpsl. I disconnected the 3750x switches and tried to downgrade them to to match the 3750. Stack problem with cisco 3750 switches vipergg mis 26 may 08 22. 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.
You cannot stack 3750 and 3850 switches, the 2 platforms have different type of stacking interfaces and cables. A version mismatch has priority and it gets resolved first. One of the switches had a port that had gone bad, and the customer wanted to have this replaced. I made sure both were running the same ios version 15. I have a single cisco 3750 switch 1 that a bunch of servers are hooked up to. This article explains 7 easy steps to upgrade ios image on a cisco switch or router.
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. Understanding interface configuration on nm modules. This is an output from the show switch command when an sdm mismatch. All other switches trying to join this stack enter sdmmismatch mode. Cisco catalyst 3850 seriesautoupgrade feature router. I have another cisco 3750 switch 2 that i just added to the rack which doesnt have anything plugged into yet.
Autocopysoftware process initiated for switch number. Highest voted cisco3750 questions network engineering. Cisco switchingrouting 3750 stack version mismatch feb 18, 20. Cisco switchingrouting 3750 major version mismatch on. When a cisco catalyst 3750 switch stack consists of 3750 12s and other models, make sure to use only the desktop sdm template. Example with two stacked cisco catalyst 3750x switches. In a mixed stack of catalyst 2960x and catalyst 2960s switches, full stack bandwidth is reduced from 80 gbps to 40 gbps. The question seems to be more accurately described as trunking cisco 3850 and 3750. Catalyst 3750 software configuration guide, release 12. 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.
Nov 15, 20 all switches in the stack must be running the lan base image. We have bought four identical 3750x switches with identical swimages. I just booted a 2member stack and got the following message on a show switch command. 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.
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. Can i run cisco catalyst 3750 switches with cisco catalyst 3750 e switches in the same stack. Cisco 3750 switch stack with different ios images network. Added switch to cisco 3750 stack, it didnt come up. When the cisco catalyst 3750 e series detects a noneseries cisco catalyst 3750, it will negotiate down from stackwise plus mode to stackwise mode. Solved how do i properly unstack 2 cisco 3750x switches. 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. For some reason it wont updowngrade to the correct version. Upgrading catalyst 3750 and catalyst 3750e switch stacks. We recentlty purchased a cisco 2960x24psl and a cisco 296048fpsl.
Removing directory to upload new ios on cisco 3750 v98cubes. How to properly form a stack wise and power stack with cisco catalyst 3850 switches. However when the remote technician connected the switches, the logs showed a version mismatch. With the other two switches we wanted to do the same thing. How to add a cisco 3850 to a cisco 3750 stack solutions. The cisco stackwise and stackwise plus solutions are flexible enough to allow you to. Make sure you have the cables correctly plugged in for the stack, then turn off the new 3750 and turn it back on. Aug 09, 2016 catalyst 3750 software configuration guide, release 12. If the new switch has different software, the switch isnt capable of joining the stack. The statck problem about cisco 3750 cisco network technology. Cisco catalyst 3750g3750e stacking overclockers uk forums. Newest cisco3750 questions network engineering stack.
Creation and management of catalyst 3750 switch stacks cisco. Stack problem with cisco 3750 switches cisco tektips. If the switch shows up with version mismatch, you should be able to downgrade. I am attempting to join two identical cisco 2960x switches into a stack at a remote branch office. It boots up but the 2960s just hangs with all the port lights on, and when i log into the 2960x i get. I was getting a version mismatch on the 3750x switches after stacking them all together. 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. Sw1 has power, but all indicator lights are on and all switch ports are off regardless if something is connected there or not. I have gotten burnt enough that the process i follow is level all to the same version before stacking. Im able to upgrade the master of a 3750 stack, but the member fails to upgrade. Switch does not join the stack switches with the same major version number but a different minor version number are considered partially compatible.
Our customers include cisco resellers, system integrators, ict companies, online retailers etc. Posted on april 24, 2014 by routerswitch tech 0 comments. 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. When i configured a stack between the two 3750, the new switch restarted due the version mismatch different ios. In order to be able to form a switch stack more than 2 switches must be used. The switch stack operation continues uninterrupted during membership changes unless the stack master is removed or poweredon standalone switches or switch stacks are added. One of the cisco etherswitch service modules or catalyst 3750 switches controls the operation of the stack and is called the stack master.