Cisco Switching/Routing :: Stacking 3750G And The 3750E?

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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Cisco Switching/Routing :: Stacking Switch 3750E And 3750X?

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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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 :: Can Stack 3750G-12S-S Switch With 3750E-24TD-S

Apr 22, 2012

Can we stack a 3750G-12S-S switch with a 3750-E-24TD-S switch?

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Cisco Switching/Routing :: 3750G - Maximum Throughput Reduced By Stacking Or Any Of Other Features

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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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 :: 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 WAN :: 3750G-48PS-E Stack-Wise 50CM Stacking Cable

Jan 21, 2013

just wonder if the Cisco Stack Wise 50CM Stacking Cable is freely available when purchasing Cisco Catalyst 3750G-48PS-E or we need to pay for it?

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Cisco Switching/Routing :: How To Use BGP On 3750E

Dec 8, 2012

I need to use cisco 3750E switch on core. I want to know whether BGP is supported on this model or not?Currently i have c3750e-universalk9-mz.150-2.SE/c3750e-universalk9-mz.150-2.SE.bin" preinstalled. and i checked BGP is not supported on this IOS image.

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Cisco Switching/Routing :: 3750E / Applying ACLs When Routing Between SVI And Routed Interface?

Mar 12, 2013

Quick question here. Using 3750E series switches with multiple VLANS configured. These switches serve as our 'core'. I have SVIs configured for the different VLANs and add inbound ACLs in each of the SVIs to control traffic between VLANS. This switch also terminates a P2P Ethernet link which connects to our Colo facility. The port used for this is configured as an L3 port. I noticed today that I was able to send traffic across this L3 link that I thought should have been blocked by an ACL I had in place but it wasn't. So the traffic flowed from a port in say VLAN 20 across this L3 link (assigned with an IP address). Would this traffic flow not cause traffic to be checked against an ACL applied in the inbound direction on the SVI of VLAN 20 (int vlan 20)? Traffic does get checked when routing between SVIs. Why would it not get checked when routing between SVI and L3 interface?

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Cisco Switching/Routing :: Upgrading 3750E From 12.2(58) To 15.0(2)

Jan 31, 2013

I am in the process of upgrading our network switches and wondering if the .lic file will work with the new software or if I have to rehost for the move to 15.0.  Its a remote site and I would like to get some solid info before I pull the trigger.
  
Also which IOS should I be upgrading to?
 
c3750e-ipbasek9-mz.150-2.SE.bin
or
c3750e-universalk9-mz.150-2.SE.bin

[Code].....

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Cisco Switching/Routing :: Stack Cables For 3750e?

Nov 13, 2011

Can I get a stack cable longer then 3m?

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Cisco Switching/Routing :: Giving Out Discard Error On 3750E

Apr 4, 2011

We're seeing "OutDiscard" error on a LAN switch connected to newly migrated Cisco IP phones. All the other error counters are clean except for the OutDiscard. (please see attached "show int count err" output.) [URL].

According to the link above, the common cause of such discards can be to free up buffer space.(Am I seeing a switch buffer issue?) How to identify/resolve the cause of the OutDiscard.The switch is 3750-E running c3750e-universalk9-mz.122-44.SE6.bin

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Cisco Switching/Routing :: 3750E RACL Slow To Load

Apr 16, 2012

I am seeing on my 3750E series switches (WS-C3750E-48TD). I have multiple VLANs configured on here, one which is used as a 'workstation' VLAN. I have an inbound ACL applied to the VLAN interface *(int vlan 50 to be exact). This list is admittedly long at roughly 6000 ACE's. Now I just recently installed these switches as they replaced some 4507R switches which we moved to our new centralized DC. Here is the issue I am having. This same ACL was applied to the same VLAN interface on the 4507s when they were doing the work of the 3750s. What I used to be able to do was actually edit the ACL by removing it with no ip access-list extended WS-In and then followed up by the ip access-list extended WS-In ......and the lines I wanted in the ACL. I know I could use the line numbers to edit the ACL but this worked OK for me. When I would do this on the 4507R, the ACL was still applied to the interface but traffic never seemed affected by the removal and re-adding of the ACL. I did this by copying and pasting the ACL into a terminal window. It seemed as though on the 4507 the ACL was not compiled until the entire thing was in loaded in and therefore traffic was not processed by the ACL until the load was done

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Cisco Switching/Routing :: 3750E NetFlow Commands Available On Switch

Oct 30, 2011

I have a 3750E stackable swtch and I need to configure neflow on it.  Are there any IOS versions that support netflow on the 3750E?  Is there any possible to configure netflow on a 3750E?  I do not see any netflow commands available on the switch?

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Cisco Switching/Routing :: Difference Between Catalyst 3750e 48 And SF300-48p?

Apr 11, 2012

what is difference between Cisco catalyst 3750e 48 and SF300-48p.

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Cisco Switching/Routing :: Timeout For Mac Address Table In 3750E

Dec 6, 2011

I have 3750E swiches with IOS v. 12.2(55)SE3. Couple servers connect to ths switch, after ping of IP this servers I can see mac addresses in mac address table.
 
For instance:
sw1#show mac address-table vlan 20
          Mac Address Table
-------------------------------------------
 
Vlan    Mac Address       Type        Ports(code)
----    -----------       --------    -----
 
When ip generate traffic to this server this mac address appear in table again on shot time (less than 10 seconds).

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Cisco Switching/Routing :: 3750E - Monitoring TCAM Usage

Nov 30, 2011

I had a lot of problems with TCAM table in the past and made changes in SDM ended whit that. But now want to be proactive and anticipate the problems in my TCAM table.
 
If the my template is "default desktop" they support a number of indirect IPv4 routes of 2k. I wanna know automatically by my management tools if this number reaches 1.9k.
 
That way I can take corrective actions before the problems starts on my network.

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Cisco Switching/Routing :: 3750e InterVLan With RVS4000 Gateway

Jan 4, 2012

I have a RVS4000 connected to my cable modem which I use as my gateway, the IP address of the RVS is 192.168.3.254
 
I have a 2811 with 3 subinterfaces of which I can ping all of them from my PC which at the minute is in VLAN 1, the only network that can connect to the outside world is VLAN 1, how can I enable the other 2 vlans to connect to the internet?
 
My set-up details are
 
Router
 
interface FastEthernet0/0.1
description *** Data Network***
encapsulation dot1Q 1 native

[Code]....

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Cisco Switching/Routing :: Can't (write Mem) After Adding 3rd 3750E Switch

Mar 10, 2008

After I added the 3rd 3750E to my stack on Sunday I can no longer save my configs with  'copy run start' or 'write mem':
 
#copy running-config startup-config
Destination filename [startup-config]?
Building configuration... 
nv_done: unable to open "flash:/config.text.new"
nv_done: unable to open "flash:/private-config.text.new"
nv_done: unable to open "flash:/multiple-fs.new"[OK]

[code]....
 
my flash seems to have plenty of space:

57409536 bytes total (24203776 bytes free)

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Cisco Switching/Routing :: SG 500 Stacking SFP Cabling

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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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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Cisco Switching/Routing :: 3750E ACL Marked Traffic Are Not In Correct Queue

Apr 22, 2012

We tested a QoS in a Cisco 3750E, IOS: 12.2(58)SE2.Voice traffice in the correct Q without any problem, but all the others traffic the Defualt Q (0), tried to capture the traffic and tcp/udp port are correct.Any thing wrong with my ACL or DSCP - CoS?? ( that ACL works fin on 4500 and 6500) [code]

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Cisco Switching/Routing :: 3750E Debug Causes Switch To Crash And Reload

May 3, 2013

I am not able to find the exact bug for Cisco 3750E stack - Debug Exception (Could be NULL pointer dereference) Exception (0x2000) error. Closest i can find is CSCsa72400 which only affects ver 12.2(20)SE4.All the stacks (3 switches) are running 12.2(50)SE3, It appears that the switch 1 crashed and reloaded. My hunch is its software but i cant find any related bugs. It could be hardware issue as well ?

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Cisco Switching/Routing :: 3750E / Traffic Prioritization Involving VLANs?

May 30, 2012

I have a device which will be sending voice and data packets and is able to mark the packets with DSCP values.   Voice, 18 and Data 42.If this was a straight through network, I'd be clear on how to handle this, but.....I will be putting this traffic into a VLAN to isolate it from some other traffic on the network.  What is the best way to prioritize this traffic inside the VLAN?  Will the Cisco switch look at and respect the DSCP values inside the VLAN and prioritize accordingly inside the VLAN?  Or, do I need to do some sort of DSCP to 802.1p mapping? Another option I would be fine with would be mapping the DSCP values for voice and data to two different VLANs and then giving the voice VLAN priority over the data VLAN .... I'm using 3750E switches.

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Cisco Switching/Routing :: 3750E-1 Meaning Of Backup On HSRP Statas

Oct 25, 2011

What is meaning backup on HSRP statas?There are 5 vlans.The other four vlans aren't backup status.Only one of five vlans display messeages. When I reload Catalyst3750E-1,debug log. [code]

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Cisco Switching/Routing :: 3750E - 10Gbe / Slow Read Speed From NAS?

Nov 7, 2012

9x3750E stacked switch (WS-C3750E-48PD-SF0) (15.0(1)SE2 
C3750E-UNIVERSALK9-M)
2x10Gbe uplinks from EMC NAS
 
At a basic level, we have found that the 10Gbe uplinks have slow read performance with or without a port-channel configured (2-3 minutes for a 700MB file to desktop from the NAS) We switched back to testing a 1Gbe and the read speed is normal. Another anomaly is Win7 / 2008 machines read speed is fine from the NAS  while the 10Gbe uplinks are in production?!
 
Write speed is great on 10Gbe. Only read speed is affected!! the switch is not reporting anything abnormal. We looked at SMB/SMB2 as another possible cause...
 
mls qos is enabled on the switch but not sure if this is affecting performance.
 
Is the ANY config that I need to carry out on the interfaces to get the read speed working as it should for both Win7 and WinXP. (MTU is 1500 throughout the enterprise, NAS included).

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Cisco Switching/Routing :: 3750E - Status Lights On Left Lit Up But No Ports On

Oct 16, 2011

I have installed and configured 2 new WS-3750E-24TD in the last 30 days, that have software version 12.5(50)SE2-universalk9, on our flat Development LAN  (currently 7 existing WS-3750E-24TD with 12.5(35)SE2-universal)The new switches have shutdown, 1 has shutdown twice and I just had the other one shutdown on the weekend, all the status lights on the left are lit up but no port lights are on, I am not able to console in to the switch all I can do is cycle power. I am planning on upgrading all switches to the latest software release  universalk9-mz.150-1SE
 
could this problem be a version incompatibillity between the switches?

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Cisco Switching/Routing :: Finisar 10Gb/s X2 Modules In 3750E IOS15.0?

Jun 13, 2012

We have many 3750E's and need to use Finisar X2 modules FTLX8541E2. After 15.0(1) IOS upgrade the 3750's now recognize the Cisco part X2-10GB-LRM's, but will not recognize our Finisar modules.

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Cisco Switching/Routing :: 6500 - Stacking Over Fiber?

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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Cisco Switching/Routing :: 3750X And 3750 Stacking Together

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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Cisco Switching/Routing :: 3750 POE Switch Stacking?

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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Cisco Switching/Routing :: Stacking A 3750X With 3750Gs

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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