Cisco Switching/Routing :: 10 GB Fiber Modules For 3750G And 3750X

Apr 29, 2013

I am working on a project to connect 2 switch stacks via 10 Gb fiber.  I am told that the 3750Xs do not natively receive the 10 GB SFPs.  What part numbers do i need to order to make this work?  Is there any IOS image requirements?

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Cisco Switching/Routing :: Get Fiber Optic Modules For 2821 Series Router

Mar 20, 2012

How to get fiber optic modules for Cisco 2821 series router. I can not find anything apart a SFP module which contains only one SFP port.

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Cisco Switching/Routing :: 2960-S With GLC-FE-100FX Fiber Modules - Packet Loss

Apr 19, 2013

I have two 2960-s switches with GLC-FE-100FX fibre modules in and I am seeing packet loss over the link that is connected to the modules. When the interface is shutdown and brought back up it always comes up in half duplex even thought it is set to full in the config. I've seen other posts where you have to use the command no duplex then full duplex to get it to come up int full duplex. This does appear to work when I do a show int it says its full duplex however I'm stil seeing 20 - 40% packet loss on the link which suggests to me there is still a speed/duplex issue. The device at the other end is a Cisco 7200 which is set to 100Full. If I plug a Cisco 2811 into the fibre link I get zero packet loss which suggests its a problem with the switch.
I have changed the modules and fibre cables which makes no difference. As I stated at the start I have two 2960's both are showing exactly the same issue. Details of the switch are below the SFP are cisco branded:

Switch Ports Model              SW Version            SW Image
------ ----- -----              ----------            ----------
*    1 28    WS-C2960S-24TS-L   12.2(55)SE5           C2960S-UNIVERSALK9-M
interface GigabitEthernet1/0/25
switchport trunk allowed vlan 380,382,384,386
switchport mode trunk
duplex full(code)

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Cisco Switching/Routing :: 2950 / 3560 / Chart To Show What Modules Will Fit What Switches For Fiber Applications

Dec 12, 2011

Is there a chart to show what modules will fit what swithches for fiber applications ex 2950 and 3560 switches

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Cisco Switching/Routing :: Catalyst 3750x 24 PS POE With C3KX-NM-10G Uplink Modules?

Sep 5, 2012

our network is spread over  15 floors and each floor we have 5-6 switches. we are planning to purchase cat3750-x 24 ps poe with C3KX-NM-10G  network modules. Each floor has two up links  to the core  switch  with  single mode fiber and other being the multimode.Suppose if we are purchasing 75 switches  do we have to  purchase 75 C3KX-NM-10 G  modules.? or  can we limit our purchase with 15 C3KX-NM-10G   sothat two uplinks from each floor can be made?  since network modules are optional cost factor is invovled. Or any issue with stacking ? the SFPs will be LR  and LRM MODULES.looking for an answer ? whether the new usb type console cable comes bundled with  cat350x or shall we have to order separately?

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Cisco Switching/Routing :: Connecting 3750G With DLink Switches Through Fiber (SFP)

Jul 18, 2011

I have issue with connectivity 3750G with Dlink Switch, it cannot connect to non-cisco switch with fiber , But CISCO to CISCO switch it shows connectivity. My question is that is there any configuration on Cisco 3750G switch to connect with non-cisco switch through fiber (SFP) ?

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Cisco Switching/Routing :: 3750G (WS-C3750G-24TS-E1U) - Fiber Module Options?

Mar 17, 2012

Got 2 of these switch stacked and there is some changes that we are going to undertake which will require us to utilize the whole 8 or 4 (2 from each switch) SFP ports. Just need some adivce on which particular fiber modules should I procure. Does this switch support 10GB of SFP ?

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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 :: Stacking 3750X With 3750G?

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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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 :: 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 "
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
Adquiri  um novo cisco WS-C3750X-24 com o IOS flash:/c3750e-universalk9-mz.150-1.SE/c3750e-universalk9-mz.150-1.SE.bin.


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Cisco Switching/Routing :: 3750g And 3750x High Memory Utilization?

Jun 11, 2013

We had a stack of 4 qty 3750g running IP base on ver 12.2.32, then installed a 3750x to the stack and upgraded the whole stack to 15.0.2 SE3. In doing so, we noticed that the memory utilization jumped from 60-70% to 83-84%.
We had the same issue occur when upgrading to 15.0.2 SE3 on another stack that was 6 qty 3750g running ip-services, but this one jumped to 90%.  On the 6 qty stack, we downgraded to 12.2.55 and the memory util went back down to 60-70%. 
On the mixed stack, we replaced the 3750x with another 3750g and downgraded the whole stack to 12.2.55, however, the memory utilization did not drop down.  As far as I can tell, no config changes have changed from the original IOS. 

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Cisco Switching/Routing :: EtherChannel On 3750G-16TD-S And 3750x-48T-S With 10GB

Nov 20, 2011

Any experience with bundling a 10GB interface on a 3750G-16TD-S with a WS-C3750X-48T-S with a 10GB interface. I have worked with 5 different TAC engineers and so far I have not gotten an answer on why the switch will not let me bundle the 10GB with another 10GB interface.
Same switch Stack – not a cross stack.
Tried every configuration possible with no luck.   I originally thought it might be the stack-ring speed – I corrected that today and it is running at 32GB –
The only thing I can think of now is it might be a hardware limitation on the 3750G-16TD-S ?
Q. What performance of the 10 Gigabit Ethernet port on the Cisco Catalyst WS-C3750G-16TD switches?

A. The Ten Gigabit Ethernet uplink on the Cisco Catalyst WS-C3750G-16TD switches is 1.25:1 oversubscribed and provides maximum throughput of 8Gb/s.   –

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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://
 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 :: Stacking 3750g And 3750x - Hardware Version Mismatched

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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Cisco Switching/Routing :: 3750X / 6509 - Trunking Over Single Mode Fiber

Oct 26, 2011

I'm having a problem with some new gear and can't seem to figure it out.  I have a 3750X-48P-S with a C3KX-10G-NM using SFP-10G-LR transceivers and I'm trying to trunk that with a 6509 that has a X2-10G-LR transceiver over single mode fiber.  This is not working.  Cisco TAC says the SFP+'s that we just got brand new are both bad and we need to order new ones.  I find that hard to believe but who knows.
The switch recognized the module and I tested all 4 ports in gigabit mode using GLC-SX-MM transceivers, all worked great.  I have the SFP+'s in tengig1/1/1 and 1/1/2 as they should be.  There are no other SFP's in the module either.
When I do a sho int tengig1/1/1 and 1/1/2 the media type doesn't show the transceiver that is installed like it does for the GLC-SX-MM ones.  Maybe it's not supposed to or maybe it just doesn't recognize them and it's a hardware issue.

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Cisco Switching/Routing :: 3750G 1Gi Fiber Transceiver To 10Gi Transceiver Change

May 6, 2013

I will like to know if I can replace a 1gi fiber transceiver for a 10 Gi transceiver, without any changes on the switch config.the switch is a 3750G.

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Cisco Switching/Routing :: Catalyst 3750G / WS-3750G-48PS Memory

Jan 15, 2012

Has any come across show ver memory details on 3750G-48PS as below, One of our Catalyst 3750G running software 12.2(44)SE2 shows unexpected DRAM as below:

cisco WS-C3750G-48PS (PowerPC405) processor (revision F0) with 0K/12280K bytes of memory. This would equate to around 11MB memory which does not seem right... Is it a known IOS bug?

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Cisco Routing :: 3750x - Installing Single Mode Fiber / Switches Not Connecting?

Oct 22, 2011

Prior we only had 62.5u multi mode.I've got 3750x switches and new SM SFP and yellow fiber patch cables.  None of my links show connected.  No lights and trunk port interfaces show down/down.
Is there a special command you have to do on a port when using SM fiber?  Do you think I need cross over fibers?

Also, should I be able to see a laser signal light like MM or is SM a different frequency so it's not as visible as MM?

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Cisco WAN :: ASR 1001 Compatible Fiber Modules?

Aug 14, 2011

We've recently bought a cisco asr 1001 Router and I have a number of interface slots. I want to populate these with fiber modules.

Which fiber modules are compatible? Are the regular SFPs ok to use or is there a special asr series of SFPs to use?

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Cisco Switching/Routing :: WS-C4510R+E Modules

Feb 7, 2013

I have a WS-C4510R+E with
Mod Ports Card Type                              Model              Serial No.
1    48  10/100/1000BaseT Premium POE E Series  WS-X4748-RJ45V+E   CAT1612L1JD
2    48  10/100/1000BaseT Premium POE E Series  WS-X4748-RJ45V+E   CAT1612L1JW
3    12  10GE SFP+                              WS-X4712-SFP+E     CAT1622L0SC
4    12  10GE SFP+                              WS-X4712-SFP+E     CAT1622L0RM
5     4  Sup 7-E 10GE (SFP+), 1000BaseX (SFP)   WS-X45-SUP7-E      CAT1620L1UJ
6     4  Sup 7-E 10GE (SFP+), 1000BaseX (SFP)   WS-X45-SUP7-E      CAT1620L1Z2
Can i add two WS-X4712-SFP+E and two 10 GE ethernet module also?
Is there 10GE ethernet module with WS-C4510R+E.

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Cisco Switching/Routing :: Modules Supported In 7609s Or Not

Dec 14, 2011

Here i have a customer who has 7609 router with modules

will this modules will be supported to the new chaisis ios or in the chaisis 7609S

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Cisco Switching/Routing :: Nexus 5010 - Only See Two 1 Gb/s SFP Fibre Modules

Nov 23, 2012

we have a old Nexus 5010 running version 5.0(3)N1(1)it is in a franckenblock(like frankenstein) ie . we bought the parts and create our own system design before VCE was created. He have since bought VCE V block for our production sites. we use the franc ken block to test before we migrate to the production v block 300 FIX the issue we have is the 5010 will only see two 1 Gb/s SFP fiber modules in the first 12 slots. All these slots are dual 1g/10G. If we add more than two, it claims not to see them. We tried swapping the sfp and using both sfg-GE-MM and GLC-SX-MM moduels, no difference at all 1g sfp are in the first 5 slots. only the first two slots are up.the others say "Link not connected" or "SFP not inserted"all five links are the same SFP and are plugged in other switches.the green link lights are on plugged in SFP, even when the CLI states they are not plugged uni tried both two types of 1 Gb/s SFP. sfg-GE-MM and GLC-SX-MM ,i move the sfp between slot 1,2 and 3,4,5. nothing changed,From "sh int brief" you can see that it can see the sfp ie they are all 1Gfrom "sh int status " it sees 1g but why does it say type 10G?why when i go to the "int e 1/5" and try switch port mode now, it can't mode and trunk at now there (;also how to i stop or clear EU51 %SYSMGR-2-TMP_DIR_FULL: System temporary directory usage is unexpectedly high at 87%.i put as much info in the attached file as i could.

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Cisco Switching/Routing :: 7000 Unable To Combine Two Modules In One VDC

Mar 4, 2013

I am having issues trying to combine two modules into one VDC. The modules are as mentioned below: When I try to combine module 1 & 10 as shown above, the nexus 7000 switch displays 'Not compatible'. I've read the online guide and it mentions that the F2 and M1 module cannot be combine into the same VDC. Problem is, my customer has already purchased the module, how do i solve this problem? If I separate the VDC, how does module 1 talk to module 10 if user wants to send traffic to Internet or Server Farm?

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Cisco Switching/Routing :: Cat 6500 - Possibility Of LLQ On Ethernet Modules

Sep 17, 2012

Is it possible to implement LLQ(QoS) on ethernet modules in the Cat 6500? For this feature, I can only find documentation about ES+ modules or SPA/SIP modules! (according to the feature navigator LLQ is supporten on the concerning HW and SW image)

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Cisco Switching/Routing :: Getting Information Of 6500 GBIC Modules?

Mar 11, 2013

is there a command that gives me the model and serial number of the GBIC modules inside the modules of the Cisco 6500 (IOS)?

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Cisco Switching/Routing :: AC Power Supply With PoE For Ethernet Modules In ISR G2

Dec 12, 2012

While configuring PoE Ethernet EHWIC PoE modules with ISR G2 routers Cisco DCT gives a warning to select AC Power Supply with PoE ‘PWR-3900-POE’. Do we need to select the PoE power supply for Enhanced EtherSwitch SM PoE modules also (at present it does nt show any warnings)?

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Cisco Switching/Routing :: VSS Function With 6700 Series Modules

Jun 3, 2013

I have already understood the following notice for using VSS function with 6700 series modules.For example there is the compatibility HW revision issue between the 6700 line card and CFC or DFC and so on. [code]

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Cisco Switching/Routing :: How To Identify Modules Supported By Catalyst 6500

Nov 15, 2011

how to identify which modules are supported by cisco catalyst 6500. is there any OID which can give us the information

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Cisco Switching/Routing :: WS-6748-GE How To Remove Old Configuration Of Previous Modules

Jan 23, 2011

We currently have two 6509's running in VSS, both switches have a  WS-6748-GE module in slot 3.  I'm in the processing of removing these modules.  I will then be replacing them with a different module type, but I need to know how to remove the old configuration of the previous modules.

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Cisco Switching/Routing :: 2600 / 3640 WIC-2T Configuring Serials Modules

Feb 5, 2012

How to configure my serial modules on my 2600 and 3640?  Each router has the WIC-2T with two cables connecting them.  I tried to ping one router from the other, but no luck. Serial IP address I just made up, this is my home lab, so if I messed those up some how,
Here is the running config for each rotuer:
Current configuration : 1071 bytes
version 12.3

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Cisco Switching/Routing :: 6500 - Replace With Supervisor Modules CATOS?

Apr 22, 2012

I have a question. I have a 6500 with two supervosrs and they both have CATOS. One of them failed and I need to replace. As long as the hardware is the same does the CATOS have to be indentical or can this be different.

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