Cisco Switching/Routing :: Stacking With 3750X?
Jan 1, 2013
There seems to be a lot of conflicting information on what can and can't stack together in the 3750X range.
I know that LAN Base can only stack with other LAN Base switches.
Can IP Base stack with IP services in 3750X? I have also heard that the 15.x.x IOS restricts mixed feature set stacks?
I know that Cisco recommends that all switches in a stack have the same IOS and feature set but having all IP Services in a stack can get too expensive.
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Nov 1, 2012
I have two WS-C3750-48PS-S switches and I need to add two more. The new part number I am looking at is WS-C3750X-48P-S will these all stack together ?
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Apr 22, 2013
I have one 3750X with C3KX-NM-10GT, I need to interconnect using stackwise to 3750G-24TS. The 3750X needs IOS 15.0(1) to use C3KX-NM-10GT, and the latest IOS for 3750G-24TS is 12.2.55. How can I interconnect them using diferent IOS?
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Jan 23, 2013
We currently have a stack of 3750G switches that are running 12.2(46)SE C3750-ADVIPSERVICESK9-M
Our 3750X is currently running 15.0(2)SE C3750E-UNIVERSALK9-M and I believe we were told you can't stack with a Universal IOS image. We have the universal on there because we have some 10GB fiber connections on it that Cisco told us wouldn't work otherwise.
I realize that the switch versions need to match, but the question is, which version should we work off to have use of the 10GB SFP card?
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Oct 3, 2012
can I make the stacking of these two switches WS-C3750E-48PD-SF and WS-C3750X-48PF-L. Both have universal IOS.
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Dec 27, 2012
I'm trying to get some clarity on power stacking 3750X switches. I have a new stack of 6 switches. I know I can only have 4 in a power stack and all 6 in the data stack with a max of 8. I'm trying to find the proper way to connect the power stack cables for the 4 switch power stack.
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Jun 7, 2012
Suppose I have a 3 member stack of 3750x switches. Members a, b and c.I have all 3 members stacked with all 3 *data* stacking cables in a daisy-chain topology. The 50 cm data stacking cable from switch a (on the very top) to switch c (on the very bottom) just barely reached.Of course, that means the 30 cm *power* stacking cable didn't reach between a & c. Right now, the power stacking cable goes from a to b, and then another cable from b to c. Leaving me with a useless extra 30 cm power stacking cable.
My question is, can switch "a" receive power from switch "c" through switch "b"? Is this just a big electrical "bus"? What if the power supply in switch "b" is removed?Just wondering if there is a need for me to get a longer power stacking cable (one of the 150 cm power stacking cables).
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Dec 11, 2012
We purchased a number of 3750X 48 and 24 port switches for the College Campus. Am finally getting around to getting them inserted on the network. Working with a WS-3750X-48PF-S and a WS-3750X-24P-L. Have them stacked with the 10Gb uplink on the 48 port switch. Have not been having fun.In the boot sequence, the switches recognize they are stacked, but as soon as they finish boot, I get the message on the 48 port switch: “Stack Port 1 Switch 1 has changed to state down.” Then “Stack Port 2 Switch1 has changed to state down.” Am noticing that I have a message preceding that: “Major version mismatch with stack neighbor.”The 48 port is running c3750e-universalk9-mz.150-1.SE3, HBOOT 12.2(53r)SE2.The 24 port is running c3750e-unversalk9-mz.122-55.SE3, HBOOT 12.2(53r)SE2Most of our 3750X and older switches are running 122-55 or 122.58 code. IP base or Universal. There is speculation that the problem is the 24 Port is Lan base, as the part number might indicate. (WS-C3750X-24-P-L.... I think that is the part number) and the 48 is IP base. Both switches are Universal, and my understanding is that they don't care about LAN or IP Base until you enable a function that falls in the IP Base domain. Then I have to call Cisco Licensing.For these switches, LAN Base is fine, based on the boot message, I feel the real problem is 122-55 versus 150-1 in the stack. So.. the question is: Do I downgrade the 48 port to match what we have in our environment, and what is on the 24 port switch. Or... Upgrade the 24 port switch to match the 48 port switch and have an installation that is not consistent with our environment? I do have two more edge closets to install with this purchase of 3750X 48 port switches.
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Nov 14, 2011
convergence time in case of stack master will be switched over to other switch.In my understating, when the stack master will be switched over to other switch based on election algorithm, convergence time will be less than 10 second.
I tried to calculate concersion time during fail over testing but convergence time was 21 second. I think it is too long...
Expected reasons
・I configured Rapid Spanning tree protocol between L3 and L3. (But RSTP's convergence time is 2~3 second..)
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Mar 28, 2012
In my office we bought 7 cisco 3750X - 48PS switches. We configured Data Stacking between those switches. We also want to configure Power Stacking between those 7 devices.
I found in the Data Sheet that we can only configure 4 devices in power stacking at a time. If it is like that how to configure the rest of 3 devices. Need configuring power stacking between those devices in a better way..
power stack cable part no we have is
CAB-SPWR-30CM
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May 2, 2013
is it easy to remove the 3750x stacking? i'd like to test one of them on a sunday and keep the other one on production. it's just two stack of 3750x, is it hard and do i really need to remove the cables on the back?
basically i need to put a different config for my testing, i gues i need to remove the cables right? and put it back on the stack before monday.
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Jul 18, 2012
I am trying to stack a 3750g with a 3750x. At the moment they will not stack with their current IOS as the hardware version is mismatched.
According to various posts this is possible as long as the same IOS is in use. The following IOS are currently in use:
3750g - c3750-ipbaselmk9-tar.122-55.SE5
3750x - c3750e-ipbasek9-mz.150-1.SE3
I have tried to downgrade the IOS on the 'X' to 122-55.SE5 however, i get errors regarding firmware incompatibility.
I am unable to upgrade the IOS on the 'G' to 150-1.SE3, as the size of the IOS image is larger than the available flash (Version 15 IOS for the 3750G (c3750-ipbasek9-mz.150-1.SE3.bin) is 16,074,189 bytes whereas the 3750G has 16MB of flash memory or 15,998,976 bytes total which mean the IOS will not fit).
Has not actually stacked these devices successfully? I understand there may be license implications of upgrading to 15 but at the moment I just want them to stack!
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May 6, 2012
I have a WS-C3750X-12S-S (IP Services) that I THINK I'd like to downgrade to LAN Base so I can stack it with a WS-C3750X-48T-L that is already LAN Base..
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Nov 14, 2012
How to stack a set of these switches with the copper 5G SFP on these switches. We currently have 4 switches stacked with Cat5e jumpers between S1&S2. We want to stop using this stacking method and go to the SFP. What is the best way to do this. Live would be preferable but whatever is the safest method is the way we will proceeed. Any goth'ca's in this process?
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May 23, 2012
Someone had told me the 6500 switches can be stacked via fiber. This feature is available for the 3750s?
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Aug 12, 2012
We have three Cisco 3750 - 48port POE -LAN switches and i am trying to see if there are any issues when we stack POE and Non-POE type of switches.Aslo looking for information on the advanatage and disadvantage the stacking can provide on a Cisco 3750 48port.
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Nov 20, 2012
have 2 3750's one is an 3750E the other one is a G... Since they are 2 different versions Do I need to correct ios for each for example my 3750E switch i would have
IP BASE
c3750e-ipbasek9-mz.122-53.SE2.bin and for my 3750G switch should i use
IP BASE
c3750-ipbasek9-mz.122-53.SE2.bin
Which would be 2 separate images
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Mar 30, 2013
I am having troubles to get 2 C3750-X switches WS-C3750-X-48P-L) to stack. They are both running iOS 15.0(2)-UNIVERSALK9, and are licensed for IP Base.
If I connect stack port 1 of switch 1 to stack port 2 of switch 1, and stack port 1 of switch 2to stack port 2 of switch 2 I get the following:
WS-C3750-X_STACK1_SW1>show switch stack-ports summary
Switch#/ Stack Neighbor Cable Link Link Sync # InPort# Port Length OK Active OK Changes Loopback Status
[Code].....
I have tried restarting (powering off for about 1 min and turning back on) simultaneously, and powering off switch 1 for 1 min and switch 2 for 2 min. I have also tried both enabling the stack ports, and disabling followed by enabling.
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Mar 14, 2012
Im going to be ordering a new 3560X L3 switch (ws-3560x-48pf-s). We currently have a 3560 V2 switch and I've read it supports stacking, but looking at the back I just see a console port. Is there an extra card I have to get for this 3560V2 to make it stakable with the 3560X?
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Jan 22, 2013
We have two 3750 stackable switches in core layer.
1. We are planning to stack two 3750 for greater bandwidth to use
2. We could configure 10GE link (by Network module) between these two switches
which solution provides increased bandwidth and redundancy?
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Oct 10, 2012
I have 2 Catalyst 2960S (24 ports and 48 ports). Can I stack them using the Uplink connection instead of the stack modules. I know Stack module is the best option but it is kind of expensives (half price of the 24 ports switch) and I only need to stack no more then 2 switches.
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Apr 11, 2012
I followed the 3-switch Redundant stacking diagram and now when I boot up the stack Switch 2 is acutally Member 3 and Switch 3 is Member 2.
We plan on having Port-Channels spanning across Switch 1 - Master and Switch 2 (Member 3) of identical port types. Switch 3 (Member 2) is going to have 2 10GIG port channel created.
Is there going to be a problem renumbering the stack as they physically sit or should I just configure the devices based on thier logical member numbers.
I don't understand why the stack connection is Switch 1 - 1 ----> Switch 2 -1
Switch 2 - 2 ----> Switch 3- 1
Switch 3 - 2 ----> Switch 1 - 2
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Dec 20, 2012
I am trying to resolve a situation where we need to send multiple (2 atleast) multicast feeds from a source to our multilayer switch (3560x).
The problem with the source is that it can only send a feed to a single switch at a given time. It can not send 2 (identical) feeds to two 3560x devices (on 2 different subnets/vlans). I was wondering if i could make the two 3560x devices appear as 1 device (using virtual chassis system or a similar feature). I am running ip services IOS feature set (c3560e-universalk9-mz.122-58.SE2.bin).
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May 24, 2012
I would like to ask about 3750 stacking and some Cat6 stuff...
1) How do we monitor 3750 stacking port in LMS?
2) Let say if I stack 3 switches, middle switch should be Master. Uplink should be at Top and Bottom. Is best practice?
3) Can we mixed 3750G and 3750X and what is result internal BW - fallback to 32Gps?
4) is there any Qos difference between WS-X6816-10G-2T and WS-X6816-10G-2TXL?
5) is there any Qos difference between MSFC5 PFC4 and MSFC5 PFC4XL?
6) What is main difference between PFC4 and PFC4XL in Sup2T?
7) Pls share more about Central and Distributed Switching in Sup2T and which card support Distributed DFCXL?
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Dec 10, 2011
I'm having trouble stacking a new WS-C3750X-24P with existing switches WS-C3750G-24PS ?I can see the license is on the new WS-C3750X-24P:
switch#sho lic
Index 1 Feature: ipservices
Period left: 8 weeks 4 days
License Type: Evaluation
License State: Active, Not in Use, EULA not accepted
License Priority: None
[code].....
I could put on the c3750e-ipbasek9-mz.122-55.SE1 image, but I may need to get the license sorted still, but not sure if that will work or how to add it if i got one.....
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Feb 19, 2013
how to stack 2 switches catalyst 2960 also haw to stack 2 cisco 3750 switches
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May 1, 2012
I plan to build improved redundancy in to my LAN by stacking two 3750s and teaming pairs of NICs on my Dell PowerEdge servers, with each cable of the pair going to a different switch.In my mind this provides redundancy for the NICs and the switches. Does this configuration will work, and also what type of teaming is supported, as I was planning to have one NIC active and one standby, but can I run this configuration with both NICs in the team as active with load balancing?
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Nov 23, 2011
As we know there are three layer in cisco Network Model:
-Core
-Distribution
-Access
So my question is in Core / Distribution layer should i use Etherchannel between switches or use Stacking if switches are stackble.For ex: suppose I have two cisco 3750 switches . so should i use etherchannel between them or use stacking in core layer?What are the advantages and disadv of both.
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Mar 21, 2012
We are experiencing output drops on our 3750G-12S (IOS 12.2.55).
I have monitored throughput with MRTG, but it doesn't seem that high compared to that the 3750G is supposed to handle 17.8 Mpps.
The 3750G's are stacked, running ospf, qos, multicast (IPTV) and etherchannel.Is the maximum throughput reduced by stacking or any of the other features?
I don't know if one can estimate what the maximum throughput is per ASIC or per port, but on one of the ASICs that is having drops the peak unicast load is 1.3 Mpps and multicast Mpps is 0.9 Mpps. Total ~2.2 Mpps.
This doesn't seem high at all and I don't understand why the drops are appearing. What I can do to find out the reason for these drops?
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Apr 17, 2013
I have production stack in the following config:
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 52 WS-C3750-48P 12.2(25)SEE4 C3750-IPSERVICESK9-M
2 52 WS-C3750-48P 12.2(25)SEE4 C3750-IPSERVICESK9-M
I want to add 3-rd switch to it:
Switch: WS-C3750G-48PS 12.2(25)SEE3 C3750-IPSERVICESK9-M
Will this configuration work? My main concern is IOS difference?
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Mar 3, 2013
I have 3750-48PS-S in production and would like to stack it with C3750G-48PS. Both switches are running code:
c3750-ipservicesk9-mz.122-50.SE3.bin
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Jan 17, 2013
My management has tasked me to give them a high level overview of the different switching we can choose for our new building.
This is what I know so far.4 Closets, each closet has 450 ports,One MDF room that is will contain one UCS Chassis and a Nimble iSCSI SAN.
I am working on the spreadsheet and it looks like this (Not totally filled):
2960s3560x3750x45064510Approx cost (Each, 48PORT, POE+, 10G uplink, Dual PS, IP BASE)
6K7K8K45K75KMax Capacity192432432192384Backplane speed206464520520ProLeast ExpensiveStackable to 9Stackable to 9ProDual PSDual PSDual PSDual PSDual PSProLayer 3 opt
Layer 3 optDual SupsDual SupsConExpensiveExpensiveConNo Dual PSConLayer 2 OnlyCannot stack more than 4
For the MDF I would like to use 2 Nexus 5548's with FEX's, and the layer 3 daughter board. For the IDF's I was thinking of two 4010's.
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Mar 6, 2013
i cant find any difference in these two devices when i am trying to compare throughput.I need upgrade our new POP and there will be around 4900 MAC adresses in VLAN 150 and 130 MAC adresses in vlan 200.Uplink is 1 gig routed internet connection and there is 14 downlinks to separate villages.i found a few differences for eg stack interface on 3750x but i dont need it.
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