Cisco :: Upgrade Version With 3750 Stack?

Oct 30, 2012

I have 4 switches of 3750. I need toupgrade all the switches, but I can't to disconnect the stack cable.How I can to upgrade the version without to disconnect the stack cable?

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Cisco Switching/Routing :: 3750 Stack - Recommended IOS Version?

Apr 4, 2011

I have 8 switches (different models) configured in stack:
Switch Ports Model              SW Version            SW Image------ ----- -----              ----------            ----------     1 28    WS-C3750G-24TS-1U  12.2(55)SE            C3750-IPSERVICESK9-M     2 26    WS-C3750-24P       12.2(55)SE            C3750-IPSERVICESK9-M     3 30    WS-C3750X-24P      12.2(55)SE            C3750E-UNIVERSALK9-M     4 30    WS-C3750X-24P      12.2(55)SE            C3750E-UNIVERSALK9-M*    5 12    WS-C3750G-12S      12.2(55)SE            C3750-IPSERVICESK9-M     6 30    WS-C3750E-24PD     12.2(55)SE            C3750E-UNIVERSALK9-M     7 30    WS-C3750E-24PD     12.2(55)SE            C3750E-UNIVERSALK9-M     8 30    WS-C3750X-24P      12.2(55)SE            C3750E-UNIVERSALK9-M
Now I'm have IOS ver. 12.2(55)SE but from time to time I'm experiencing strange system freezing. It means that all systems connected to the stack are working very, very slow. It hapens ones, sometimes twice a month and takes 5 minutes. I didn't find anything strange in logs (neither on switch nor router). I would like to install other IOS version. Could you recomend me the most stable version for this stack (built from these different models) ?And the secound question:  - Is it possible to copy SE1 manualy to every switch and reload one by one manualy. Will they join the stack and work fine after reload or maybe there will be a IOS mismatch ?

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Cisco Switching/Routing :: 3750 Stack Version Mismatch

Feb 18, 2013

I'm able to upgrade the master of a 3750 stack, but the member fails to upgrade. [code] I couldn't do rmdir flash:update unless I reload chassis... but even after reloading still cannot make the 2nd member to load with the newer IOS.

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Cisco :: LMS 4.2.2 3750x And 3750 Mixed Stack Upgrade

Oct 10, 2012

I'm trying to use LMS to upgrade a stack of switches that have 1 or more 3750x's and other 3750's.  In Software Distribution, if I choose Distrube to devices, basic, it finds the x switch, which is the master but says the others are not candidates.  I don't see a place where I can tell it it is a mixes stack and choose multiple IOS's.

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Cisco Switching/Routing :: Zero Downtime 3750 Stack Upgrade?

Jun 10, 2011

Zero downtime 3750 stack upgrade?

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Cisco Switching/Routing :: Zero Downtime 3750 Stack Upgrade

Feb 3, 2009

Zero downtime 3750 stack upgrade 

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Cisco Switching/Routing :: 3750 Stack Switches IOS Upgrade?

Nov 13, 2012

I am trying to do ios upgrade on 5 stacked 3750 switches. All the switches have different model number, so i am wondering which image file i should download. As far as i understand all the stacked switches should have the same IOS, i may be wrong. The switches have the following model numbers and SW images;
Switch   Ports  Model              SW Version              SW Image
------   -----  -----              ----------              ----------
     1   28     WS-C3750G-24PS     12.2(35)SE5             C3750-IPSERVICESK9-M
*    2   28     WS-C3750G-24PS     12.2(35)SE5             C3750-IPSERVICESK9-M
     3   52     WS-C3750G-48PS     12.2(35)SE5             C3750-IPSERVICESK9-M
     4   30     WS-C3750E-24PD     12.2(35)SE5             C3750E-UNIVERSAL-M
     5   30     WS-C3750E-24PD     12.2(35)SE5             C3750E-UNIVERSAL-M
which image file i should use as they all have different model numbers and Cisco provides different image files for each model.

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Cisco Switching/Routing :: 3750 48PS Stack IOS Upgrade

Jul 9, 2012

I want to upgrade the IOS version of 3750 48PS switches. these stacks are located on different building some of the them having 2 members and some have 3 members in a stack.step by step to upgrade the IOS of these switches.

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Cisco Switching/Routing :: Catalyst 3750 Series Stack IOS Upgrade?

Oct 8, 2012

I have Cisco Catalyst Stack structure that  consist of;
3750G-48TS-S (IPBASE Image)
3750G-48TS-S (IPBASE Image)
3750G-48TS-S (IPBASE Image)
I want to upgrade their IOSs to k9 images.
I can not dowload Universal Image file from Cisco website because of the expired service contract.  I have IPBASE IOS files for all switches,
Can it be a problem to upgrade master switch IOS from Universal to IPBASE image?

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Cisco Switching/Routing :: Rolling Stack Upgrade Of Catalyst 3750

Apr 1, 2013

I want to run rolling-stack upgrades on several stacks containing Catalyst 3750X-switches. I have done as follows: Configured the redundant uplinks as active and stand-by.Started to upgrade by using archive download-sw /rolling-stack-upgrade /overwrite /reload The upgrade starts as expected BUT switch number 2 in the stack is reloaded BEFORE switch 1 is finnished, the result is of course downtime for the stack. The documentation says something about the command "boot time", but what is this command doing? The default seems to be 7 minutes, it this parameter the time the upgrade-process waits before booting the next switch in the stack? I would expect that switch number 2 is reloaded when switch 1 is up again after reload, and not after an absolute number of minutes, is the rolling-stack-upgrade not working this way ?

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Cisco Switching/Routing :: Upgrade IOS 3750 Stack - Reboot Minimal Impact

Sep 13, 2012

I wanted to know if there is a way of upgrading the IOS on a stack of 6 - 8 3750's with minimal impact at reload. Is there a way to reload one member at a time?

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Cisco Switching/Routing :: 3750 - Firmware Upgrade Of Switch Stack Fails

May 9, 2012

I have a stack of 4 Cisco Switch 3750 (1 x WS-C3750G-24T, 2 x  WS-C3750-48P and 1 x WS-C3750V2-48PS) and I want to do an firmware upgrade of this stack. Actually, all the 4 switches are at the firmware version 12.2(50) SE1 "IPBase" and I want to upgrade them to 12.2(55)SE5 IPBase. According to the release notes, all the switches in my stack are supported.
To upgrade the firmware, I use the command "archive download-sw /imageonly /overwrite tftp://IP_Address/c3750-ipbaselmk9-tar.122-55.SE5.tar" The firmware gets uploaded correctly but then I get the error message "There is insufficient space in flash: to install the required image. Clean up some old images, and try again."
When I do a "show flash", I see that the switch has 5650944 bytes free of 15998976 bytes.
How can i upgrade my switches? Is there an error in my command which I use? Do I need to add an other option?
The problem is, the switches are located in a branch office and there is no direct access to them. Everything must be done remotely.

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Cisco WAN :: Replacing A Stack Master In 3750 Stack?

Jan 22, 2013

We currently have as our stack master a 24 port Non-PoE that we want to replace with a 48 port Non-PoE. The 48 port switch at one time was provisioned as switch 3 in the stack (not the master). Correct me if I am wrong, but theoretically all I should need to do to get this working is to shut off the existing master so it re-elects a master and then provision the 48 port switch as the new switch one and make sure switch 1 has a high priority?
Do I need to write erase the switch that is replacing the current master first?          

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Cisco Firewall :: Software Upgrade For ASA 5520 Version 7.0(1) To Version 8.4?

Apr 3, 2012

provide me with the important links which can show me how to do the software upgrade for my ASA 5520 ver 7.0(1) to ver 8.4 ? as well as the ASDM

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Cisco Firewall :: How To Upgrade ASA 5510 Version 8.0(4) To Version 8.3

May 10, 2011

i am using Cisco ASA 5510  with ASA Version 8.0(4) and memory 256MB. me to Upgrade it to 8.3

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Cisco Switching/Routing :: Stack C2960S High CPU Version 12.2(58)SE2

Jan 14, 2013

I have a customer with a stack of two switches C2960S-24TS-L that are running 12.2(58)SE2 universal K9, we see that the CPU load increase over time, to 95% and stays there reload solves the problem.the process that akes a lot of CPU is also the SNMP ENGINE, I see that it is running 30 minutes on 95% and then 10 minutes on 35%, this is the only stack were we see this problem. Is there also a SNMP bug in this version ?

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Cisco Switching/Routing :: WS-C3750G-24TS-1U Stack Crashed IOS Version 15.0(1)SE

Nov 2, 2011

I have a situation. I am running two-switch 3750-stack and it crashed this morning. IOS version the switches is: "flash:c3750-ipservicesk9-mz.150-1.SE.bin"
Log Buffer (10000 bytes):
3:40.840: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan104, changed state to up
Nov  3 13:13:40.840: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan201, changed state to up
Nov  3 13:13:40.840: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan202, changed state to up
Nov  3 13:18:13.336: %PLATFORM-1-CRASH(code)

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Cisco Switching/Routing :: WS-C2960S-24TS-L / Switch Version Compatibility In A Stack

Dec 19, 2012

We have the following stack configuration: 

Switch Ports Model              SW Version            SW Image------ ----- -----              ----------            ----------      1 28    WS-C2960S-24TS-L   12.2(55)SE3           C2960S-UNIVERSALK9-M     2 28    WS-C2960S-24TS-L   12.2(55)SE3           C2960S-UNIVERSALK9-M     3 52    WS-C2960S-48TS-L   12.2(55)SE5           C2960S-UNIVERSALK9-M *    4 52    WS-C2960S-48TS-L   12.2(55)SE5           C2960S-UNIVERSALK9-M 

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Cisco Switching/Routing :: Stack C3750G And C3750X - Major Version Mismatch

Jun 11, 2013

I'm trying to stack 3750G & 3750X. As discussed in previous threads I am aware of that the version need to match.
Here the switch details:
Switch Ports Model              SW Version                SW Image
------ ----- --------------             ----------
* 1 24    WS-C3750G-24T      12.2(55)SE7             C3750-IPBASEK9-M
* 1 54      WS-C3750X-48      12.2(55)SE7           C3750E-IPBASEK9-M
I have changed the universal IOS on the 3750X to IP base..but they still wont come up as a stack. On the 3750X I don't see any log entry, on 3750G (major version mismatch).

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Cisco WAN :: High CPU On 3750 Stack?

May 1, 2011

I have been seeing high CPU on a 3750 stack we use for our phone system. I followed the documentation here:
This documentation pointed out that the interrupt was very high and so I started looking at the CPU queues to debug. The icmp queue was dropping TONS of traffic.
The debug was full of these:
ICMP-Q:Dropped Not a candidate: Remote Port Blocked L3If:Vlan248 L2If:GigabitEthernet1/0/17 DI:0xB4, LT:7, Vlan:248   SrcGPN:17, SrcGID:17, ACLLogIdx:0x0, MacDA:001a.a1c4.1cd2, MacSA: 0013.192c.bb80   IP_SA:


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Cisco LAN :: Four Member Switch Stack 3750

Apr 16, 2013

We have a current 3-stack 3750 ( 48-P,48-TS & 3750v2-48PS ) running fine. There is a plan to introduce a fourth stack member ( 3750X-48P ) into this per cisco documentation, it suggests to use 3750X as master for a mixed stack. In this case, we will need to upgrade current other 3 stack switches to a latest version.,Can we do a no-downtime ios upgrade on the existing 3-switch stack?, when this upgrade is done, is there any way to have the new ios pushed down to all three stack members at the same time or do we need to each member upgrade seperately?, for adding the fourth member, is it acceptable if master is ruuning ver eg. 12.2(55) and all rest of the members run ver 12.2(53) ? will this create any issues and will stacking be successful.

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Cisco Firewall :: ASA Redundancy With 3750 Stack

Oct 4, 2011

I will be installing a new ASA 5510 firewall on our SIP vlan to separate our voice traffic from the rest of the traffic.  I'm trying to decide whether or not I should go with an active/active setup or an active/standby.  Any insight on the best way to set this up?  This install is going in from scratch, and I am going to be connecting to a 3750 switch stack.  Should I pair up a link from each switch to each 5510 using etherchannels?  Should I use 8.3 or 8.4?  Most of the docs I've been able to find say it depends on this, that, or the other.

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Cisco LAN :: Stack 3750 - Some Switches Not Accept Changes

Mar 8, 2012

I have 3750 stack with 4 switches.I am trying to make change some port to new VLAN, but switch 2 & 3 new change never works, the ports stick with old VLAN. Other two switches works as I expected on new changed VLAN.Tried to reboot, no progress.

#Show VLAN command confirmed the VLAN changes are made.
#show switch detail
Switch# Role     Mac Address     Priority     State
1       Member   0019.e752.xxxx     1         Ready
2       Member   0015.f9bf.xxxx    1         Ready


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Cisco :: 3750 SNMP Stack Monitoring?

Oct 3, 2006

I am building a few 3750 stacks, I want to be able to poll/monitor each individual switch in the stack but as it only has 1 ip associated with the stack how can I do this.  I am polling the uplink interfaces but as I only have uplinks on the top and bottom switch I am blind to a switch going down in the middle of the stack.

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Cisco WAN :: 3750 - Stack And Switch Port Keeps Going Up / Down

Nov 7, 2012

I have 2 3750x switches connected via a pair of stackwise cables, but I keep seeing error messages about the stack&switch ports going up and down,Performance wise, it seems to work, but I'd like to eliminate this message... Sometimes it will go hours without bouncing, sometimes it does it a few times a minute....
*Mar  4 12:56:57.903: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state DOWN
*Mar  4 13:16:48.070: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 2 has changed to state UP
*Mar  4 13:16:49.093: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 2 has changed to state DOWN
*Mar  4 13:38:55.802: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state UP
*Mar  4 13:38:56.809: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state DOWN


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Cisco :: Cat3750x Stack Upgrade From CiscoWorks

Jul 26, 2011

I am trying to use Ciscoworks LMS3.2 with RME 4.3.1. to upgrade many, many Cat3750x stacks we have laying  around. The problem I am having is that Ciscoworks downloads the new image to the Stack’s master switch only and not to all switches. When I reload the stack after the download, any switch could become the master. I already set up the priority to always have the same master, but the process is unreliable and more than once I ended up with another switch as a master. In any case if the master is not the switch with the new image, the stack will keep the old image as their running image and the switch with the newer image has problems joining  the stack (after a while it downgrades and become stable)I know how to do it manually, but I was hoping Ciscoworks would be able to do this for me. It would make my life much easier.

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Cisco :: Using CiscoWork RME To Upgrade IOS Of C3750 Stack?

Dec 10, 2012

I was thinking of upgrading the IOS of a number of c3750 stack (roughtly about 50-100 stacks around the country)...I would like to know is this feasible?
My CiscoWork NMS is connected with a low bandwidth (2Mbps) management link. I was thinking if I upgrade via CW2k, then RME will take "ages" to push the IOS to the stack, right? Is this feasbile for 100+ stack of switches?

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Cisco :: 3750 Stack Member Loss Power?

Jun 10, 2012

I have a switch stack with three WS-C3750X-48 switches running 12.2(55)SE. Recently, stack member 3 went offline for a few minutes, after being online for over a year. A show version on member 3 reports that the system returned to ROM by power-on.

Stack member 3 shares a UPS with a router that did not lose power and all three stack members have stack power with four 350 WATT power supplies between the three of them. There are no crashinfo files on any of the switches, log files show the stack ports on the other switches going offline then switch 3 being removed from the stack.

Surveillance recordings show there was no one near the switch during the time and AAA accounting shows no clues. Is it possible the switch crashed without leaving a trace in the logs, a crashinfo file and report that it returned to ROM by power-on?

I've read before that loose stack cables can cause stack member reboots. Would such an event generate log messages other than the stack ports changing states to down?

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Cisco Switching/Routing :: Adding 3750 To Stack?

Dec 6, 2011

I have two  3750s stacked and one 3750 standalone all in one data closet. The both have the same versions. I want to combine them to make one stack. How do I force the standalone to be the master? sw 1 priority XX(Higher then the existing stack)? Both the stack and the standalone have management addresses. Would it be ok to delete the stack ip address? That way, the standalone(master's address will be the only management address)?How should I connect the standalone 3750 to the stack? At present, the 3750 stack is connected via a cascade cable going from the stack 1 port of the top switch to the stack 2 port of the bottom switch.

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Cisco WAN :: 3750 Stack Unable To Save Config

Jul 4, 2012

I have a 3750 stack of 4 switches that was installed about 2 years ago. Recently I was doing some work on the switch and realized that I am unable to save the config. I amobviously concerned that if the power fails or the switch reboots I will be reconfiguring it and that is not something I am interested in doing!


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Cisco Switching/Routing :: 3750 Stack Port

May 19, 2013

I have a stack of 4 3750 Switches.
1. WS-C3750G-12S
2. WS-C3750G-12S
3. WS-C3750X-48P
4. WS-C3750X-48P
The stack cable connected to Switch 1 Port 1 and Switch 4 Port 2 will not come back online. The logs show that there was a Stack line change. I have replaced the 1 meter Stack cable from Switch 1 to Switch 4 three times and it still does not come back online. This is the part that is interesting.. I have disconnected Port 1 Switch 4 and connected it to Port 2 Switch 4 and then Switch 4 came back online. This made me think Port 2 on Switch 4 was working correctly. Then I disconnected Port 2 Switch 1 and connected it to Port 1 Switch 1 and then Switch 1 came back online.

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Cisco Switching/Routing :: 3750 Stack CPU Utilization?

Feb 20, 2013

i have two cisco 3750 in stack firts, master switch have all swports busy second have only 5 how can i see cpu utilizations of the second switch, and its reasonable to move somme devices from first switch to second for deacreases of cpu and memory utilisatio ns of the master? the stack tehnologies use both cpu as one? or its only for simple management ?

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Cisco Switching/Routing :: Stack Port Down On 3750

Mar 11, 2013

have a cable i think is bad, is it possiable to switch the cable out without causing any downtime to the switch or connected devices?
HQ-1st-Flr-Stack#show switch stack-ports summary
Switch#/  Stack   Neighbor   Cable    Link   Link   Sync      #         In 
Port#     Port              Length    OK   Active   OK    Changes   Loopback
Status                                          To LinkOK   


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