Cisco Switching/Routing :: Upgrading C3750-X Stack Switch

Nov 27, 2012

a) I have three C3750-X switch stack together as my SAN switch and running on the new 15.0 release which is 15.0(1) SE.

b) Recently the master switch rebooted without any explanation. Create ticket with TAC and got an answer that it is due to a bug with ID: CSCtr31957.
 
My question is, which release that should i choose either the 15.0(1) SE3 or the latest 15.0(2)? Will it affect any of my configuration if i change to 15.0(2)?

Finally, what is the best practice to upgrade IOS in a stack whether to upgrade it 1 switch at a time or do it to all at once?

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Cisco Switching/Routing :: WS C3750 Stack Switch Compatibility

Mar 13, 2011

We have existing stack of  3 units of  WS-C3750-48TS-S ( 100 mbps ports with Gigabot uplinks). with IOS as follows, Can we add  WS-C3750G-48PS-S  in this same stack (this is 48 Gigabit ports)?

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Cisco Switching/Routing :: Stack L3 With L2 3750 Without Upgrading L2 Switch IOS To IP Services

Nov 20, 2012

is there a document that explains the compatibility of 3750 series that can be stacked together? for example can we stack 3750-x with 3750-v2 without the power sharing? Can we stack a L3 3750 with L2 3750 without upgrading the L2 switch IOS to ip services?

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Cisco Switching/Routing :: To Change SDM Template C3750 Stack

Feb 4, 2013

According to cisco manual in order to change SDM template i need to reboot switch, but when i have C3750-X stack do i need to reboot stack or maybe will be enough reboot in sequence the stack members?

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Cisco Switching/Routing :: Can Stack (ws-c3750G-12s) With (ws-c3750X-24p-poe-s) With (ws-c3750-48p-10/100 Poe)

Feb 3, 2012

can i stack cisco (ws-c3750G-12s) with (ws-c3750X-24p-poe-s) with (ws-c3750-48p-10/100 poe) i mean even a switch is 10/100 and the other switch is 10/100/1000?

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Cisco Switching/Routing :: Upgrade C3750-stack Without Downtime?

Sep 30, 2009

Is it possible to upgrade a c3750-stack one member at a time to avoid downtime? I need to keep L3-functionality up.
 
If I have one etherchannel from access-switch (2 channel-ports in 3750, in different stack-members), my 3750-stack as a distribution layer switch, and another etherchannel (also spread over multiple stack members) to core, can I upgrade the entire stack without traffic interruption?

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Cisco Switching/Routing :: To Add WS-C3750-48TS-E To WS-C3750E-48td Stack

Feb 13, 2012

Is that possible add WS-C3750-48TS-E to ws-c3750e-48td stack?

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Cisco Switching/Routing :: Catalyst WS-C3750-48P And WS-C3750G-16TD Stack?

Jan 1, 2012

I have 8 switch stack consisting of six WS-C3550-48P and two WS-C3750G-16TD running software vesrion 12.2(25) SEB1. When I added new C3750v2-24PS (running image 12.2(50) SE5) in stack so I up-graded the image of existing 8 switches with latest veriosn 12.2(50) SE5. Once I have done with the upgrade then all ports of my stack switches went down after around five minuts. Is it image compatibility issue with existing switches or something else?

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Cisco Switching/Routing :: Stack WS-C3750-24FS With WS-C3750X To Use C3KX-SM-10G

Aug 9, 2012

We have WS-C3750-24FS switches stacked supporting users on our LAN. I want take advantage of the netflow capabilities of the WS-C3750X using the C3KX-SM-10G card.
 
Would I be to see netflow data coming from the WS-C3750's if I stacked it with the WS-C3750X?
 
Also I read that the C3KX-SM-10G card would support a 1G SFP is that correct?

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Cisco Switching/Routing :: Stack Mac Persistent Timer Lacp Port Channels C3750

Sep 27, 2012

I am having an issue on a Cisco 3750 stack where when the stack master is rebooted, all my lacp port-channels drop and then come back up again. After doing some investigation It seems that it is happening because of lacp using the stack master mac-address as part of the system-id, so when the stack master reboots, the stack mac changes. I see that there is the command: stack-mac persistent timer 0

There is this warning about using this command:
 
When you configure this feature, a warning message displays the consequences of your configuration. You should use this feature cautiously. Using the old master MAC address elsewhere in the domain could result in lost traffic.
 
My question are:
 
Are there any other consequences to using this command (apart from moving the switch/mac to another location in the network)It mentions 'If the entire switch stack reloads, it acquires the MAC address of the master as the stack MAC address' Is this still the case if you have the stack-mac persistent timer to 0? Does using channel-group mode on for the port-channels still use the same mechanism of having a system-id? (Will the channels flap using 'mode on' when rebooting the stack master.

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Cisco Switching/Routing :: Upgrading A Stack Of 3750

Apr 29, 2012

I just need a little refreshing on upgrading a stack of 3750's.  This stack only has 2 switches: [code]

1.) If I remember correctly I simply tftp the IOS to the flash of each switch and then reload the master only?
2.) Can I safely assume these are the 2 flash locations:

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Cisco Switching/Routing :: Upgrading A 3750x Stack IOS?

Dec 3, 2012

way to upgrade the IOS in my stack on 4 3750x switches

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Cisco Switching/Routing :: Upgrading Firmware On Mixed 3750G And 3750X Stack

Jul 3, 2012

I've got a mixed stack as follows:

Switch 1 - 3750X-24P
Switch 2 - 3750G-24TS
Switch 3 - 3750G-24T
 
Running 12.2(53)SE2, IP base.  Now I tried upgrading the firmware on the entire stack to 12.2(55)SE4 and ran into this error:(Command: archive download-sw /imageonly /overwrite /allow-feature-upgrade tftp://10.20.20.13/c3750e-universalk9-tar.122-55.SE4.tar)
 
 Error: The image in the archive which would to used to upgade system number 2 does not support that system type.I haven't as yet removed the "3750G-24TS" switch from the stack and re-tried as yet, however, is the expectation that without the 24TS, the upgrade should work?

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Cisco Switching/Routing :: Possible To Mix WS-C3750V2-24PS-S And WS-C3750-24PS-S In Same Stack

Jun 14, 2011

I am not on site and I have not seen a WS-C3750V2-24PS-S. Customer has a stack of 6 x WS-C3750V2-24PS-S and one unit has failed. We do not have a WS-C3750V2-24PS-S spare. Can we replace it with a standard WS-C3750-24PS-S (not V2) switch and be part ofthe stack.
 
1. Are there any traps gotchas?
2. What about IOS versions - aren't they different for V2 switches
3. Are the stack ports and stack cables same for both    WS-C3750V2-24PS-S and WS-C3750-24PS-S
4. What is the main reason for bringing out the V2 switches. What features do they have extra?

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Cisco Switching/Routing :: Recommended IOS For Switch C2960S And C3750

Jun 13, 2013

We have several of these WS-C2960S-24PS-L running 12.2(55)SE5  C2960S-universalK9-M and need to upgrade to a better.IOS since we have a sitution where CPU would get to 100% but we have only a few ports connected.Also we have several of WS-C3750-48P running 12.2(55) SE6 C3750-IPBASEK9-M.

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Cisco Switching/Routing :: C3750 Switch To Increase Accessing Speed

May 19, 2013

Our client having one c3750 with ipbase license switch.They are connected server and end switches to that switch.Our customer want to increase the speed to accessing the server at that time I am told to use etherchannel.Customer happy about this and implement the etherchannel configuration.Now i need to configure etherchannel upto 4 physical link.server are connected on port no Ge1/0/10,they want to bind four phical link GE1/0/10-13.how to configure etherchannel in this switch?

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Cisco Switching/Routing :: Downgrade Firmware On C3750 V2 Switch 24TS-S V07 To 12.2(35) SE5

Apr 10, 2012

Is there a way I can downgrade the firmware on a C3750 v2 switch 24TS-S v07 to 12.2(35) SE5. I have added this new switch to an existing stack but the FW is not compatable. I believe the answer is to upgrade the rest but I cannot afford any down time as they are used to run a CCTV securiy network 24/7. I have included details below to assist with my problem. Switch 4 is the one with a version miss match.

LNB-SWI3750-CTR-01#show verCisco IOS Software, C3750 Software (C3750-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)Copyright (c) 1986-2007 by Cisco Systems, Inc.Compiled Thu 19-Jul-07 19:15 by nachenImage text-base: 0x00003000, data-base: 0x01080000
ROM: Bootstrap program is C3750 boot loaderBOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(25r)SEE4, RELEASE SOFTWARE (fc1)
LNB-SWI3750-CTR-01 uptime is 19 weeks, 3 days, 22 hours, 46 minutesSystem returned to ROM by power-onSystem image file is "flash:c3750-ipbase-mz.122-35.SE5/c3750-ipbase-

[code]....

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Cisco Switching/Routing :: C3750-IPServicesk9-m - Cannot Ping VLan When No Port Connect To Switch

Nov 12, 2011

Why I cannot ping vlan when no port connect to switch.

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Cisco Switching/Routing :: C3750-48PS Switch Is Stuck In SYST Mode On Front Panel

Dec 13, 2012

After powering up a WS-C3750-48PS switch, Normal POST LED flashing of lights does not happen, instead the switch is stuck in SYST Mode on the front panel. My attempt to hold down the mode button upon powering up for 15 sec fails to reboot the switch. I cannot console to the switch. Is this switch unrecoverable? Should I RMA with TAC?

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Cisco Switching/Routing :: Upgrading 6503E Switch - Sup 720 3B

Mar 19, 2013

I am looking at upgrading my 6503-E switch. While I get the chance, I would like all aspects upgraded as I finally have some "downtime". I am running a Sup 720-3B.From what I understand, the boot image is a recovery image (mini IOS) - should the main IOS fail.Where should this be installed, sup-bootflash:/ or bootflash:/ ?,The file is “s72033-boot-mz.122-33.SXI11.bin.”The Boot Loader. My understanding is that Bootloaders are not used in these Sups with a MSFC3? I am not sure why TBH .. but would this be the case ?Rommon can be upgraded.  I don’t quite understand if there are two ROMs (SP and RP).

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Cisco Switching/Routing :: 4510 - Upgrading Switch Already Running IOS 15

Apr 4, 2013

I have a Catalyst 4510 that is running IOS version 15.X that has a bug and Cisco recommends upgrading the IOS. Are there additional steps required to perform an IOS upgrade due to licencing Cisco put in place?

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Cisco Switching/Routing :: Upgrading IOS Image On 3560 Switch

Sep 10, 2012

i am facing an error while upgrading the IOS image on 3560 switch. [code]

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Cisco Switching/Routing :: Upgrading From Router 2800 To L3 Switch 3750G?

Feb 19, 2013

I wan to migrate from a router 2800 to L3 switch 3750G , the thing is that we have several vlans and we use a router sometimes with each interface configure with correspoinding vlan subnet ip to route traffic between vlans there is no static or dynamic routing only directly connected interfaces on router routing traffic to each other ?How would i configure a L3 switch interface for simillar functionality , below is my current router configuration

!
ip domain name yourdomain.com
multilink bundle-name authenticated
 !
vtp mode transparent

[code]...

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Cisco Switching/Routing :: VG224 Quits After Upgrading IOS To 15 On 3560E Switch

May 15, 2013

I recently upgraded a remote site of mine to IOS 15-2.SE ipbasek9 on 3 3560E series switches. On switch number 2 I have 5 VG224's running (vg224-i6k9s- m) 12.4(22)T3. After the switches reloaded the VG224's dropped their connection. After doing all basic troubleshooting I reloaded the 12.2 (58)SE2 ipbasek9 image back on to the 3560E's and the VG224's reconnected immediately after reload and all phones registered.
 
Is the problem a licensing issue with the 15.x IOS on the 3560's or do I need to upgrade the VG224's to IOS 15.x as well for them to connect and operate via the 3560e switch running 15-2?

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Cisco Switching/Routing :: C2960-24-TT-L - Switch Memory Utilization High After Upgrading IOS

Nov 8, 2011

I upgraded the newest IOS 15.0(1)SE for our SW C2960-24-TT-L, the process was succeseful. However, we found SW memory utilization raised to 82% this morning in normal situation. (Momery: Total 21341260, Used17471692) Did you guys meet the same problem after upgrading to 15.0(1)SE? I also would like to know what the normal memory utilization is? and what is the impact of memory utilization highly?

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Cisco Switching/Routing :: Error While Upgrading IOS On 2960 Switch Using Tftp Server

Apr 29, 2013

I am trying to copy IOS from my TFTP server which is on my laptop to cisco 2960 switch
 
I am able to ping to switch from my laptop, connectivity is fine, tftp server is running
 
Current Image on Switch --> C2960-LANBASE-MZ.122-25.SEE3.bin -->  trying to upgrade to --> c2960-lanbasek9-mz.122-53.SE2
 
I am getting below error when trying to upgarde IOS:
 
2960-SW#copy tftp: flash:           
Address or name of remote host []? 10.1.x.x
Source filename []? c2960-lanbasek9-mz.122-53.SE2

[Code].....

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Cisco Switching/Routing :: Upgrading Newest Software Images On C2950G Switch

Jan 23, 2012

I was upgrading the newest software images on a c2950G switch. So i followed the step by step procedures from url...I removed the current flash that was on the switch and then for some reason typed reload. This started the switch up without the IOS. Make a long story short I am now stuck in switch: prompt mode and I am unable to use x-modem to transfer the newest IOS onto the switch. I am currently getting "no response remote system".

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Cisco Switching/Routing :: 3750 / Add A New Switch In Stack?

Jun 21, 2012

i want to remove an access layer 3750 48 POE master switch and replace with a  new 3750 switch in the stack. i want to copy the same configuration to new switch since the old switch is having POE issue and I got replacement of the malfunctioned switch. we have VTP domain is configured in the network...

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Cisco Switching/Routing :: C3750x-48P-E Stack Switch Best IOS

Mar 27, 2013

Which is the best and advanced IOS for c3750x-48P-E stack switch among below listed IOS.
 
c3750e-universalk9-mz.122-58.SE2 ?
or
c3750e-universalk9-mz.122-55.SE6..??

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Cisco Switching/Routing :: 2960s / Add One More Switch In Stack?

Apr 29, 2013

I have a running setup having 2 Cisco 2960s 24 TS switch with Stack configuration. Now I want to add one more same Cisco switch. My questions are:-
 
1) How can I do this...(Should follow the same process as I did before.

2) Could I do this without impacting the service. i.e. without rebooting the switch.

3) What should be the connection archiecture as of now since there is two switch so it is connected 1 -1 and 2-2. but for 3 switch should we require to change the connectivity.

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Cisco Switching/Routing :: Switch 3750G Stack

Jun 17, 2012

have one 3750G stack with 4 switches and this stack is presenting the follow log message:
 
%PLATFORM_UCAST-4-PREFIX:  One or more, more specific prefixes could not be programmed into TCAM and are being covered by a less specific prefix, and the packets may be software forwarded.
 
In this stack we are using the layer 3 with OSPF routing, and the current sdm prefer is default:
 
switch-01-3750#sh sdm prefer
The current template is "desktop default" template.
The selected template optimizes the resources in
the switch to support this level of features for
8 routed interfaces and 1024 VLANs.(code)

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Cisco Switching/Routing :: Stack Behaviour Of 3750 Switch

Nov 17, 2012

I configured 3750 A  switch with vlan 20 and its IP address 192.168.20.41Its default gateway was 192.168.20.3Then i configured 3750 B  switch with same default gateway and vlan 20 IP   192.168.20.43My question is now when we stack it becomes single switch and now vlan 20 ip address is 192.168.20.43 thats only IP i can see.So how does stack switch choose vlan 20 IP?Does it choose highest IP address between two switches if they have same vlan 20 as in my case?Also when i go to switch 3750 b by session command and do sh ip route  it does not show ip default gateway .Also it shows vlan 20 as admin down .

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Cisco Switching/Routing :: 3750-X - How To Shutdown Only Switch In Stack

Aug 11, 2011

I have a doubt. In my environment I have two Switch 3750-X in stack.

My question is: How to shutdown remotely only a switch in stack?

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