Cisco Switching/Routing :: Add A New 3750x To Existing Stack Of 3750

Aug 2, 2012

I've a situation where I need to add a new 3750x to a existing stack of 3750. [code] When I tried to stack them together, I get a version mismatch error. Is this because of the difference in SW Image?  What are my options next ? My ultimate goal is to make the new switch stack correctly with the exisitng switches.

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Cisco Switching/Routing :: How To Add Four 3750 Switches Into Existing Stack

Sep 22, 2012

I have 3 3750  staking switch with the following configuration:

                                            H/W   Current
Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
1       Member 442b.0350.9400     1      1       Ready              
2       Member 442b.0357.8780     2      1       Ready              
3       Master 442b.036f.a800        3      1       Ready              
 
The new switch is installed to be wired to the master switch. the swtich 3 (* 3 Master Ready 442b.036f.a800)my question is: if you disconnect the wiring from the master stack to connect to the new switch, it is possible that the new switch change the current configuration of stacking.
 
-Can I just add the new switch with clean configuration without changing the current configuration ?
-How is assigned the stack number? i need the new switch be with the GI4 / x?. I can I manually by assigning ports?
-If I want to the new 3750 member witch lower prioridad, can I change priority before adding to stack?

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Cisco Switching/Routing :: Adding A New Switch In Existing Two 3750 Stack

Mar 25, 2012

in our network we were using three 3750-48-s switches with stacking one of the switch due to some hardware failure power problem,
 
now i want to add a new switch 3750-48-s in the existing Stack two switches , the old two switches ios version is = 12.2(25r)SEC the new Catalyst 3750 io verion is =   12.2(35)SE5
 
how to add this switch in the existing two stack switches , with documentation

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Cisco Switching/Routing :: Adding 3750 Switch To Existing Stack?

Nov 23, 2011

I am looking to add a new 3750 Switcch to an existing stack shown below
 
Switch   Ports Model             SW Version             SW Image
------   ----- -----             ----------             ----------
*   1   26     WS-C3750-24P       12.2(35)SE5             C3750-IPBASE-M
     2   26     WS-C3750-24P       12.2(35)SE5             C3750-IPBASE-M
     3   26     WS-C3750-24P       12.2(35)SE5             C3750-IPBASE-M

[code]....
 
I have looked on notes to add a switch to an existing stack and haven’t identified answers on how the IOS will be affected on the new switch – will it downgrade to the current stack version or will the current stack upgrade to its version. At this moment in time I would prefer if the new switch IOS downgraded to the current stack IOS version.The new switch is a 3750V2 – will this affect how it joins the stack?The new switch has the image of IPBASEK9-M – again will this affect how it joins the stack?

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Cisco Switching/Routing :: Adding Switch To Existing Stack 3750

Oct 16, 2012

I am attempting to add and Catalyst 3750 - 12 port Gigabit switch to an existing stack of 3750 48 port switches (non-X fabric). I am not sure how to proceed. These are the two questions/thoughts I have. Any additional perspective I should have before proceeding.

What kind of configuration should I apply to the Gig switch before adding it to the stack?I am sure I will need to assign priority to the new switch, ideally, it will act as master.

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Cisco Switching/Routing :: Adding 3750X To Stack Of 3750?

Jul 17, 2012

I am getting a version mismatch when adding the following 3750X to the 3750 stack:
 
   WS-C3750X-48       12.2(55)SE3           C3750E-UNIVERSALK9-M
      2 0     WS-C3750-24TS     12.2(25)SEA           C3750-I9K91-M
 
Can I upgrade the 3750's to be able to correct this?  Which version does this require?

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Cisco Switching/Routing :: Catalyst 3750 And 3750X Together In One Stack?

Nov 20, 2011

if I read the Datasheet of Catalyst 3750X-Series-Switches it is possible to connect a new X-Switch to an existing and old Catalyst 3750-Series Stack.What kind of requirements are needed? Only same IOS-Version in the hole Stack and if possible same Feature-Set? .... like in a normal NOT mixed Stack?

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Cisco Switching/Routing :: Configuring Stack-power On A 3750X Stack?

Oct 31, 2012

I have 3 switches in my 3750 X stack. I am getting the following error in the logs:  %PLATFORM_STACKPOWER-4-PRIO_CONFLICT: Switch 1's power stack has conflicting power priorities.  Not sure what I should do next. Below is my Stack-power configuration:
 
Power stack name: Powerstack-1    Stack mode: Power sharing    Stack topology: Ring    Switch 1:        Power budget: 735        Low port priority value: 20        High port priority value: 10        Switch priority value: 2        Port 1 status: Connected        Port 2 status: Connected        Neighbor on port 1: c464.1308.7900        Neighbor on port 2: e8b7.4827.e680
    Switch 3:        Power budget: 729        Low port priority value: 22        High port priority value: 13        Switch priority value: 4        Port 1 status: Connected        Port 2 status: Connected        Neighbor on port 1: 2894.0fd9.9f00        Neighbor on port 2: 2894.0fd8.e200
    Switch 2:        Power budget: 690        Low port priority value: 21        High port priority value: 12        Switch priority value: 3        Port 1 status: Connected        Port 2 status: Connected        Neighbor on port 1: 2894.0fd8.e200        Neighbor on port 2: c464.1308.7900
 
Each switch has its own 715W power supply in it and all check out OK.

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Cisco Switching/Routing :: Adding Two 2960S To Existing Stack

Oct 1, 2012

I need to add two additional 2960S switches to my stack. I saw a diagram that showed how a 4 switch stack can be connected, but I couldn't find much detail on adding a switch to an existing stack (besides master election). The output below shows how the existing stack is connected and its state
 
SW#sh switch detail
Switch/Stack Mac Address : 0011.2222.3333
H/W   Current

[Code]..... 
 
I will need to break one of the stack rings between SW1 and SW2 in order to connect the new switches. Does it really matter which ring I break to connect the additional switches? Does one ring act as primary? If so, I'd rather not break that ring so this process is transparent as possible. Also, is there any benefit to disabling the stack port vs just disconnecting the cable?

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Cisco Switching/Routing :: 3750X - Adding Ports To Existing Port-channel

Jan 29, 2013

I need to tear down an existing port-channel on a 3750X running c3750e-universalk9-mz.150-1.SE3.bin. This port channel is currently down down. It has three ports in it that will be added one each to three existing port-channels, I am assuming as long as the "channel-group" command is exactly the same as it is on the three existing port-channels I should be ok just adding the new port. One point to note is that the three existing port-channels all have three ports so this will be adding the fourth port to each port-channel. I know after reading that it is a best practice for load balancing to use either 2, 4, or 8 ports for a port-channel. Also what is the command to see all ports that are in a port channel?

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Cisco Switching/Routing :: QoS On 3750X Stack

May 7, 2013

I'm trying to review a QoS setup, and I'd like to make sure I fully understand the current setup before I change anything. I'm seeing output drops on two different queue-thresholds, but not sure how packets are making it to one of the queues.
 
Switch Version
CORE#show ver
Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 15.0(2)SE, RELEASE SOFTWARE (fc1)
System image file is "flash:/c3750e-universalk9-mz.150-2.SE/c3750e-universalk9-mz.150-2.SE.bin"
cisco WS-C3750X-24 (PowerPC405) processor (revision A0) with 262144K bytes of memory.
Switch Ports Model              SW Version(code)

I can find queue4-threshold3 in the mappings, but how are packets getting mapped to queue2-threshold1? The priority queue is disabled for this interface, so I'm not sure how this queue is dropping packets, according to the maps nothing is mapped to 02-01.

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Cisco Switching/Routing :: Adding 2960s To Existing Stack Of Two POE Switches

Feb 27, 2013

I have to add a 2960s PoE switch to an existing stack of two 2960s PoE switches. If The new switch has no configuration on it and the existing stack is broken by pulling te stack cables and then new cables are added and everything re-cabled correctly will the new switch assume the configuration from the stack without any issues?

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Cisco Switching/Routing :: Adding New Switch To Existing C3750x Stack?

Dec 6, 2012

I am having an issue with adding a c3750x switch to an existing switch stack Currently there is 2 x WS-C3750X-48P and I am trying to add another WS-C3750X-48P to this switch I have cabled the switch to the stack using the stack cables and added the command to provision the switch on the exisitng stack.  However when I turn the switch on it just goes on its own stack.
 
I noticed the new switch had a later version of IOS so have downgraded this to the same version as the other switches but still no joy Here is the sh ver from the exisitng stack
 
uptime is 4 weeks, 4 days, 23 hours, 30 minutes
 System image file is "flash:/c3750e-universalk9-mz.122-53.SE2/c3750e-universalk9-mz.122-53.SE2.bin"
License Level: ipbaseLicense Type: PermanentNext reload license Level: ipbase
cisco WS-C3750X-48P (PowerPC405) processor (revision A0) with 262144K bytes of memory.Processor board ID FDO1448Z0FJLast reset from power-on21 Virtual Ethernet interfaces1 FastEthernet interface156 Gigabit Ethernet interfaces6 Ten Gigabit Ethernet interfacesThe password-recovery mechanism is enabled.

[code]....

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Cisco Switching/Routing :: Catalyst 2960 / Add New Stack To Existing Two Stacks

Mar 7, 2013

On first floor, I have two stack switches and each stack has got 4 switches. they all are working fine.Now the client would like to add one more stack on the 2nd floor. But the second floor switches are different when compared to the 1st floor switches.
 
can you have differnt IOS among different stacks. I knew in a stack we need all the switches should have same IOS version. But in between two stacks to communicate do we need same IOS or they can be on differnet IOS?
 
1st floor switches have 15.0 version and 2nd floor new switches has 12.2.58. Is this ok ?
 
1st floor switches are 3500 series ( Note: only one one Vlan 20 we are using on the both stack switches and we would like add same Vlan 20 on to the new stack)
 
2nd floor switches aew 2 catalyst 2960 switches.
 
Note: on the second floor switches one is 24 port switch and the other one is 48 port switch. so can i make them  as a stack?
 
We have already done cabling from 1st floor to second floor. So no problem with that at all.

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Cisco Switching/Routing :: CPU Spikes On 3750X Stack

Mar 7, 2013

This 3750X stack (3 members) has some 100% cpu spikes. Is this bad enough to start tracking down the cause(s) or is this somewhat typical and not a reason for concern? I just took this reading. How can you detemine when the 100% and 80% spikes occurred? 
 
 2222233333333332222222222444442222222223333322222222222222
7777733333333338888888888000007777777770000077777888887777
100     

[Code].....

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Cisco Switching/Routing :: Multicast In A 3750x Stack

Jan 31, 2012

I recently created a stack using (2) 3750x switches. I have three vlans on the stack (1,105,241) Vlan 105 is configured on 6509 core switches with multicasting and are connected to the stack via gigabit fiber. It is working well with clients on the Master or SW1, however clients on SW2 do not participate in multicasting Any client pc that is connected to SW2 vlan 105 does not show up in the "sh ip igmp snooping group" command. I can statically assign a client on SW2 to the mcast groups but but they fail to register on their own. I can take the cable connection from SW2 and plug it into an SW1 Vlan 105 port and it immediately becomes a member of the groups. I can then connect it back to the SW2 port and it disappears from the group membership. IGMP and PIM are configured with the defaults.

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Cisco Switching/Routing :: Is It Possible To Stack A 3750G And 3750X

May 26, 2011

I have a 3750G and bought a new 3750X.  It possible to stack these two together?

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Cisco Switching/Routing :: 3750X Stack High CPU?

Dec 3, 2012

Seeing very high CPU on one of our 3750X stacks.  Usally its around 30% but recently its 70, 80, 90 or maxed at 100% during the main day.IOS version c3750e-universalk9-mz.122-55.SE1.bin.Has a ten gig uplink connected to a nexus 7k and another ten gig connected to another 7k.  Running Layer 3 and EIGRP on the 3750X.Is this normal for the CPU?

#sh processes cpu history                
    5555555554444455555555555555588888666669999888885555577777
    8888000001111111111222227777755555666662222222229999977777
100
90                              *****     ****
80                              *****     *********     *****

[code]....

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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 :: SH INVENT On Stack 3750X-24P-S

Dec 4, 2012

I have a stack of three 3750X-24P-S switches. Each switch has two PSU's.If I do a SH INVENT, switch 2 only lists Power Supply 0
 
If, however I do a SESS 2 onto the second switch in the stack and then do a SH INVENT, it shows both power supplies. Is it anything to be concerned about?

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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 :: Power Supplies In Stack With 3750X

Mar 12, 2012

I have two WS-C3750X-48PF-S in stack, but every one has just one power supply. In the package of the switches is included one stack power supply cable.does it make sense to use stack power cable if every switch has just one power supply ??

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Cisco Switching/Routing :: Rolling Stack Upgrade (RSU) With 3750X (IOS 15.0.1-SE3)?

Jun 17, 2012

Switch 2 has an interface configured in RSU Standby.Switch 3 has an interface configured in RSU active. The upgrading sequence is : Switch 2, Switch 1, Switch3.The aim of the test is to prove that there is no loss of IP connectivity throught the RSU process.During the RSU process, there are ping between all the computers.
 
IOS starting version : 15.0-1.SE3
IOS upgrading version (with OVERWRITE) : 15.0-1.SE3 (same version)
 
1rst step : Switch 2 reboot and come back master but isolated from original stack (switch 1 and 3)
 
2nd step : Switch 1 reboot, and come back with switch 2 into the upgrading stack.

Issue : at this step :

-  Switch 1 put its interface (IP 192.168.5.254) up :

-  Switch 3 has not reboot and still has its interface (IP 192.168.5.254) up

=> we have some OSPF adjencies and mac flapping issues : switch 1 and 3 are trying to mount there OSPF adjencies on the same IP. We loss our IP connectivity since step 3 is not over.
 
3rd step : Switch 3 reboot and come back up in the upgrading stack. The IP connectivity is back, and the RSU process is done.Is that a normal behaviour ?How can we avoid to loose IP connectivity during RSU process ?

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Cisco Switching/Routing :: 3750X Stack Upgrade Failure

Jan 24, 2013

IOS upgrade tried on the stack of 2XWS-C3750X-24T-S , Upgrade was tried to support WCCP on the platform. Current version is Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(58)SE1, Not able  find any IP Plus ios in the site ? Only available are IP base and Universal K9 , Tried upgrading to c3750e-universalk9-tar.122-58.SE2.tar by using stack upgrade method as per document [URL]
 
Upgrade fails with error :
 
%Error opening flash:update/info (No such file or directory)
ERROR: Image is not a valid IOS image archive.
 
Why current ios is not supporting WCCP , I hope it is there in the featureset. ( tried "sdm prefer routing" but no success) Does c3750e-universalk9-tar.122-58.SE2.tar will give me wccp support ? What is the issue with my upgrade and how do I do a successfull upgrade ?

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Cisco Switching/Routing :: High CPU Usage - 3750X Stack

Jun 19, 2012

We recently configured a stack of four 48 port 3750-x switches . We are noticing high CPU usage. "Hulc LED process" seems pretty high. This has coincided with VMware servers getting slow and non-responsive at times, perhaps a coincidence, not sure. Below I provided some outputs about how to diagnose it.

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Cisco Switching/Routing :: Stack 3750G-12S-S With 3750X-48T Switch?

Apr 14, 2012

if we can stack the 3750G switch with a 3750X switch ?

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Cisco Switching/Routing :: Adding 3750X To 3750G Stack?

Jun 13, 2012

Our customer has a stack of 6 3750G switches.  They want to add another switch to the stack.  I tried to quote another G, but I got a warning that the G series is EOS January 30,2013.  Can I add a 3750X to the stack?  I know that no matter what switch I get, I will have to upgrade the IOS in the stack, as the stack is running 12.2(25)SEE2. 

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Cisco Switching/Routing :: 3750X - Single Switch Stack?

Mar 8, 2012

I have a 3750X 24 port switch (with NM-1G network module) running IOS 15.0(1). Is there any benefit or reason to plug in the included Stack Wise cable and loop it back to itself in a single switch installation?
 
I don't see any recommendation in the documentation. The data sheet indicates a single switch is a non-blocking device so I'd think there's no bandwidth advantage like there is when connecting an actual multi-switch stack and needing to close the loop for the full 32 Gbps stack bandwidth.

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Cisco Switching/Routing :: Difference Between Stack 3750G And 3750X?

Jul 15, 2012

I have a cisco WS-C3750G-24TS with IOS flash :/ c3750-mz.122-ipservicesk9-25.SEB4.bin "
 
I purchased a new Cisco WS-C3750X-24 with the IOS flash :/ c3750e-universalk9-mz.150-1.SE/c3750e-universalk9-mz.150-1.SE.bin. ( NEW )
  
When i configured a stack between the two 3750,  the new switch restarted due the version mismatch (different IOS´s);
 
 We have two versions: 
 
WS-C3750G-24TS-ipservicesk9 flash :/ c3750-mz.122-25.SEB4.bin "
  
VS
 
WS-C3750X-24 flash :/ c3750e-universalk9-mz.150-1.SE/c3750e-universalk9-mz.150-1.SE.bin.
  
Is that possible to configure a stack between then?
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Tenho  um cisco WS-C3750G-24TS com o IOS flash:/c3750-ipservicesk9-mz.1
22-25.SEB4.bin"
Adquiri  um novo cisco WS-C3750X-24 com o IOS flash:/c3750e-universalk9-mz.150-1.SE/c3750e-universalk9-mz.150-1.SE.bin.

[code]...

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Cisco Switching/Routing :: Replacing 3750X Stack Member?

Feb 7, 2012

I have two 3750X in a stack. Each 3750X has one 10Gb uplink to primary core1 and one 1Gb uplink to backup core2 configured in 2 etherchannel groups. The member switch has bad ports, so I need to replace it. I have spare 3750X unit. Is it possible to connect the spare unit to the stack and then move the RJ-45 cables from the member with bad ports to the new member? That way I can minimize servers downtime to just a few seconds..If that would work, then the last step would be to move the 10Gb networking module from old member to the new one, as well as the secondary PSU. Is it doable? Also according to the documentation, all I need to add new member is matching IOS version, correct?

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Cisco Switching/Routing :: Dual Stack HSRP On 3750X?

Jan 10, 2013

I would just like to confirm whether dual stack hsrp is possible or not on 3750X both stack and non-stack.
 
The following is that I have to take care of this on the stack?
 
[Catalyst 3750 Software Configuration Guide, Release 12.2(55)SE]

[URL]
 
%FHRP group not consistent with already configured groups on the switch stack

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Cisco Switching/Routing :: 3750x Replacing 2nd Stack Wise Cable?

Nov 20, 2011

I have two 3750G switches stacked together however it's not in a full ring configuration:

Stack Ring Speed        : 16G
Stack Ring Configuration: Half
Stack Ring Protocol     : StackWise
 
And as shown below it's obvious which cable is not working:
 
show switch neighbors
Switch #    Port 1       Port 2
--------    ------       ------
1         2            None
2        None           1
 
It's not flapping - it's like the cable isn't there at all. I'm going to try reseating the cable in there and perhaps an all out replacement if necessary. My question - is there any threat of a reboot of the switch stack or of partitioning of the switch stack by trying to get the 2nd cable working?

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Cisco Switching/Routing :: High Utilization On 3750x Switch Stack?

Feb 25, 2013

i am seeing very high utilization on a random basis on the stack. and the logs indicate me that there is a pattern where there is a stack power cable shows inserted (which was never unplugged) followed by sudden spike in the utilization.
 
001018: *Mar  6 16:21:22.138: %PLATFORM_STACKPOWER-6-CABLE_EVENT: Switch 4 stack power cable 1 inserted
001019: *Mar  6 18:18:37.982: %SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU

[Code]......

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