Cisco Switching/Routing :: WS-C2960S-48TS-L / Reasons To Limit 1Gb Capable Switches To 100Mb?
Jul 8, 2012
Our network administrator restricts all our new 1Gb switches to only 100Mb, to which he claims it will increase overall performance. Preventing devices from bottlenecking the network. (that is, only restricting the main switch ports, not the uplinks)For example we have a new building with 2x WS-C2960S-48TS-L connected together with FlexJack and then a 1Gb Fiber connection back to our core switch.
This building is on it's own subnet and there is little broadcast traffic. I don't see the point other than it hinders the potential speed we could use. Labs are set up in this building and 1Gb is MUCH faster when it comes to imaging and software deployment.
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Nov 24, 2011
I currently have 2 Cat6509 switches with VSS Capable Sups. One of the switches has an extra 10Gig Lincard. Will VSS still work in this scenerio?/?
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Apr 11, 2012
Is L3 ip routing on by default in 3550s? If so is the "ip routing" command visible in the config file? If no - I assume that one would enable L3 routing with that config command.In general terms are there any IOS devices where ip routing is enabled and one would not see the "ip routing" command in config. I.E. if that command is not visible in the config could you assume there is no L3 capablity in that device?
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Feb 5, 2013
I have 3560's in my current environment, operating in the core/distro/access layers. The switches are in a star configuration, performs only layer 2 switching, and utilizes copper (no plans on moving to fiber).
With a fairly limited budget, I've been contemplating on upgrading the central node to a stacked 3750X to eliminate that single point of failure, and trunk the rest of the 3560's to the stacked switch. I wanted to be sure that the 3750X switches will be right for my environment (90-100 hosts), and if what I explained above is a good solution.
I'm also looking like to upgrade 6-7 of my servers (and SAN) with 10GB network cards. Do the ports on the 3750X have port densities capable of 10GB? If not, what switches provide that capability?
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Dec 18, 2012
I was looking at WS-C2960S-48FPS-L (740 Watts) and WS-C2960S-48LPS-L (340 Watts) models today, I'm not sure that I understand it right,
Does WS-C2960S-48FPS-L model support all 48 ports POE+ (30Watts)? Does that mean each port will get 30 Watts on this switch?
Does model WS-C2960S-48LPS-L support 24 ports with POE and 24 ports with POE+?.
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May 28, 2012
How many Switches can be stacked with WS-C2960S-48FPD-L at a max..
As per my Knowledge it is 4 and as below..
Switch 1 to Switch 2
Switch 2 to Switch 3
Switch 3 to Switch 4
Switch 4 to Switch 1
If yes then, is it mandatory to do the "Switch 4 to Switch 1" stack. why am I asking this is because this stack requires a long cable and the cable which comes with the Switch is only 0.5M.
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Apr 2, 2012
My company is beginning to have a lot of sites were we are stacking 3 to 4 C2960S-48 switche.This is making "show running-config" very very long because of the 4 x 48 interfaces.I can’t find a CLI command that show me the running-config of a ranges of interfaces. If I for example would like to see running-config for switch 3 (interfaces 3/0/1-52)The Show Running-config will show all the interfaces (for the two first swtiche = 104 interfaces), which take a time before I reach to switch 3.I miss a CLI command like: show Running-config switch 3, or module 3, or show running-config interface range x/x/x-x ?I’m well aware of the CLI command show running-config interface x/x/x, but this will only show me one interface.
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Jan 16, 2012
find out which types of fiber optic that i can connect to three types of switches. the setup that i have that there are:8 access switches (WS-C2960S-24TS-S), in each one there is two SFP connections.2 aggregate switches WS-C3750X-24T-S, in each one there is four SFP connections.and one core switches that has SFP card WS-X4624-SFP-E? Note that the fiber optic that we have coming from filed are multimode.
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Oct 8, 2012
Is a 3750 sw capable of handling full routing tables and what can you recommend in a small mutihomed BGP router or switch capable of handling full routing tables?
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Jun 4, 2013
I'm trying to configure and etherchannel between 2 switches. A 3750 and a 3750G, but the port channel is down: 3750. [code]
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Sep 4, 2012
I have a c3560 switch that has two gig fiber modules in it. I need to uplink fiber to one of these at 100mb. This is because this port will be rate limited to 20mb and 10 percent is the lowest you can go with the rate limiting command. Is there a 100mb fiber module i can insert in the 3560
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Sep 10, 2012
I would like to know if Catalyst WS-C3750G-48TS-E recognizes and understand Cisco VSS ( Virtual Switching System) . Is there a List available which tells us which Old Catalyst Switches or current switches understand Cisco VSS?
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Jan 26, 2012
I'll have to replace an old WS-C3550-24. Reasons for this: EOL/EOS & we'll need a NAT capable device...
As I understood, the only L3 catalyst that is able to perform NAT is a 6500? Is that correct? If the above is correct, it seems I can only replace the setup by using a router/ASA with a L2 switch. A router with high throughput (+/- 300Mbps) is hard to find, especially as NAT will require CPU resources...
So, my best (affordable price) solution is getting an ASA5520 (450Mbps FW throughput) and a L2 switch?
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Nov 4, 2011
Which smaller POE switch is capable of powering a 9971 IP phone with a cam and a think client attached?
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Jun 13, 2012
Can I upgrade my 3750 48TS-S to the EMI software or does it need to be a 48TS-E?
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Mar 7, 2012
This switch randomly reboots throughout the day. I checked the stacks info and reported it was using crashinfo_12 (report below). I have access to the switch throughout the day if more config info needs to exported.
Cisco IOS Software, C3560 Software (C3560-IPBASEK9-M), Version 12.2(50)SE1, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2009 by Cisco Systems, Inc.
[Code].....
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Jun 12, 2012
My old switch software version is c3750-ipbase-mz.122-35.SE5 and model number is WS-C3750-48TS-S and my new switch Software version is c3750-ipservicesk9-mz.122-50.SE5.bin and model number is WS-C3750V2 . I want a compatible (prefer same) version of IOS which works on both the switches as both the switch will be in a stack..
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Apr 20, 2013
I have two Switches which i need to put in a same stack - WS-C3750E-48TD and WS-C3750G-48TS . Possible to do so and also which IOS to put in both the switches as WS-C3750G-48TS is having lower RAM and flash.Whether can i put following IOS in these switches and connect them in a stack as i have read that IOS -- 15.0.1. SE are compatible with both the switches.
a . c3750e-ipbasek9-mz.150-1.SE.bin in switch - WS-C3750E-48TD
b. c3750-ipbasek9-mz.150-1.SE.bin in switch -- WS-C3750G-48TS
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Feb 13, 2012
Is that possible add WS-C3750-48TS-E to ws-c3750e-48td stack?
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Aug 12, 2012
Situation: Currently WS-C3750G-48TS-(S or E) switches are on stack. Now these units will soon EOL on Jan. 30, 2013 and Cisco recommends that
WS-C3750X-48T-S or WS-C3750X-48T-E will be used.
The question is: Will the new SKU works together in a stack with the old ones? Will there be no changes on the type of stacking cable to be used?
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Feb 28, 2013
I've got two two 3560s switchs, (WS-C3560G-48TS-S) that I'm trying to connect to each other using the GB ports over Fibre. We purchased the following GBICs, SFP 1000SX Transceiver and when we put them in the port it shows (err-disabled). Below is some information I pulled from one of the ports, but doesn't matter what port I use they all say the same thing.
ProdSwitchSW1#show run int g0/51
Building configuration...
Current configuration : 37 bytes
!
interface GigabitEthernet0/51
end
[code]....
Configuration register is 0xF
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Oct 4, 2012
May I know why my 2960S-48TS-L takes 10 minutes to boot and start, some just take 1 minute, but one of them take up to 10 minutes, but after that it works fine, why?
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Jan 23, 2013
We have a cisco stack with 5 ws-c3750-24p 12.2)55)SE3 c3750-ipbasek9-m switches. Can i add a switch to the stack that is the following model: ws-c3750g-48ts 12.2(25)see3 c3750-ipbase-m
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Apr 13, 2011
I just upgraded several of my C2960S-48FPD-L from 12.2(55)SE to 12.2(58)SE and now almost every time I try to SSH to it the switch reboots and gives me these trace backs ...
07:58:52 CST Thu Apr 14 2011: Unexpected exception to CPU vector 200, PC = 1EADA28
-Trace back= 0x1EADA28z 0x1CDC324z 0x1EA5520z 0x1CDC35Cz 0x1CDD0E0z 0x1CDF0C4z 0x1CE06CCz 0x1CE07F8z 0x1D67348z 0x1D611BCz
Writing crash info to flash:/crashinfo_ext/crashinfo_ext_3
07:58:56 CST Thu Apr 14 2011: Unexpected exception to CPU vector 1100, PC = 121BB98
-Trace back= 0x121BB98z 0x12250FCz 0xFA7540z 0xA807B8z 0xA75DF4z 0xA78080z 0x94B708z 0x9717C0z 0x918DD8z 0x936520z 0x9344BCz 0x9345FCz 0x93484Cz 0x1D67348z 0x1D611BCz
=== Flushing messages (07:58:56 CST Thu Apr 14 2011) ===
Buffered messages: (last 4096 bytes only)
0x00000005 R6 = 0x01224F44 R7 = 0x02A23C6C
000089: *Feb 28 18:03:13.577 CST: %PLATFORM-1-CRASHED: R8 = 0x00000080 R9 = 0x00000000 R10 = 0x00000000 R11 = 0x00000071
000090: *Feb 28 18:03:13.577 CST: %PLATFORM-1-CRASHED: R12 = 0x00034855 R13 = 0x00000280 R14 = 0x01CE0778 R15 = 0x00000000
000091: *Feb 28 18:03:13.577 CST: %PLATFORM-1-CRASHED: R16 = 0x00000000 R17 = 0x00000000 R18 = 0x00000000 R19 = 0x00000000
[ code]....
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Dec 9, 2012
I am looking for a reasonable switch but it has do do inter-VLAN Routing. I know I could go with a 3560/3750 with IP Services but I am also thinking the 2960S with IP Base IOS might do?
I have looked up the IP Base IOS and it does list IP Routing but how to actually configure inter-VLAN Routing on a 2960S with IP Base?
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Feb 6, 2013
Wondering if this switch is capable of being a backbone switch for a network of about 1000+ users and if the switch can handle a sustained 30Meg of data going across it?
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Mar 13, 2013
I have a brand new 2960S-48TS-L, plain vanilla with no extra module/boards etc. It boots up ok (the installed version is 12.2 (55) SE5) but then constantly cycles the following error, and doesn't accept any input whatsoever. After 5-10 minutes of cycling the error, the switch reloads and starts the process again.
PCIE0: link is NOT up.
--------------CPU's PCIe SDR Registers--------------------
PE_DLPSET = 00401000
PE_UTLSET1 = 00000000
[Code]......
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Feb 18, 2013
I am having WS-C3560G-48TS switch with ios(c3560-ipbasek9-mz.122-58.E2.bin) and I am trying to use IPv6 feature in this switch model. More over I've upgraded this switch with many ios but none of them not supporting IPv6 feature. ios which supports IPv6 feature?
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Nov 3, 2012
Need to confirm if WS-C3750-48TS-S supports Private vlans and IPV6?
Also need to know which stack cable like part number i can use for stacking them .
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Apr 19, 2013
I have been trying to enable L3 intervlan routing on C2960S Switch with ip routing command and that was the output from the Switch: [code]
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Nov 27, 2011
I have three ESW-540-24 10/100/1000 Switches in a small school environment
1. ESW performs as a server switch for out small cluster of VMWare ESXi Hosts and iSCSI SAN with a link-aggregation/lacp/etherchannel connection to the backbone switch, and a Link-Aggregated Connection to the thrid ESW switch via a multimode optic fibre link to a near-site backup and DR location
2. The second ESW acting as network backbone links back to the server switch and our older LinksysSRW224G4 (four SRW224G4s) switches using Aggregated Links / LACP to reduce bandwidth contention and allow for link redundancy
3. The third ESW as mentioned previously is at the backup DR location linked back to Switch 1
When using Single 1GB links between these three switches I can almost saturate the 1GB link (80-95% utilisation) as soon as link aggregation is configured by bonding 2x 1GB links together to form an etherchannel link utilisation will not exceed 100MB (network monitor graph on a server/ workstation runs flat at 10% utilisation) I have tested this multiple times useing large file transfers accross our SANs (which have high enough throughput to saturate links) and can confirm that performance degradation occurs as soon as an etherchannel is configured on the same ports (regardless of manually setting admin speed and duplex of copper ports etc) all indicators specify that ports are running at 1GB even though throughput REDUCES by 90%.
We are not running the latest firmware yet (2.0.3), however I have read the release notes for newer versions (2.1.16 and 2.1.19) and there is no indication of a fix for etherchannel/lacp performance issues.
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Mar 21, 2012
Is there a CLI-command to see the serial number of the flexstack module installed in a C2960S.
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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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