Cisco WAN :: WS-C3560G-48TS-E / Cold Startup Time For Catalyst Switches?
Apr 23, 2013
My customer uses WS-C3560G-48TS-E switches in air traffic control systems. A requirement for one project is that the entire system be up and running in under five minutes. The WS-C3560G-48TS-E and its replacement - WS-C3560X-48T-E with C3KX-NM-1G - take about four minutes to start up. With other devices added in they exceed their required startup time.They also use WS-C3560V2-48TS-E switches which take about two minutes to start up but they want they GE.
1) Is there way to improve the start up time in the WS-C3560G-48TS-E and WS-C3560X-48T-E switches?
2) Is there another Catalyst switch with similar specifications to WS-C3560G-48TS-E and WS-C3560X-48T-E that has a quicker start up time.
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Feb 7, 2012
We are planning to run BGP on our pair of 3560G switch, I would like to know how many bgp routes it can support? it currently running on advance IP service.
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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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Feb 21, 2012
I have a switch WS-C3560G-48TS.The version of IOS is:
WS-C3560G-48TS 12.2(58)SE2 C3560-IPSERVICESK9-M
The command "track number rtr" is missing. There are just three options there:
#track 10 ?
interface Select an interface to track
ip IP protocol
list Group objects in a list
Why is that so and where is rtr?I have the same switch with the following ios version:
WS-C3560G-24TS 12.2(50)SE1 C3560-IPSERVICESK9-M
rtr is present in there.
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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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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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May 15, 2012
i have an urgent situation that my catakyst C3550 wont booting up after i reset the startup-configuration using "erase startup-config" command. now everytime i connect to the catalyst it show me "switch: " not "switch>", i have try using "boot" command in the "switch: " session but it said"Loading ""...: permission denied"error Loading ""
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Feb 21, 2012
I have a Cisco Calayst C3560G core switch with 4 x SGE2010P Switches which are invidually linked/trunked via 2x CAT6 Cables for each SGE switch so im not stacking them. First problem is i cant seem to trunk/bond the 2 cables to the SGE LAGs i created, I can only use 1 cable per SGE switch. Yes the Core switch is configured correctly and have the proper Port Channel config (below is an example of a config) how do i get this working!?
I run POE Voip phones and PC's of 1 cable that is vlan'd on the phones, so each port on the SGE's are trunk'd
CISCO C3560G
interface Port-channel1
switchport trunk encapsulation dot1q
switchport mode trunk
[code]...
The other issue and more troublesome is that I have random reboots on all of the SGE's the LOGs tell me nothing! I cant seem to figure it out even had the units swapped out! Jumbo Frames are enabled but still happens even if disabled. Got some STP/RSTP settings but nothing works.
SGE Hardware Version 00.00.01
SGE Software Version 3.0.018
SGE Boot Version 2.0.0.03
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Feb 4, 2013
I was wondering if I can force catalyst 2960 to skip startup config stored in NVRAM and boot with no config everytime it is powered. I tried to find it on google and in cisco white papers but still no luck. I found only commands that begin with "set boot config-register ... ", but switch acts like it does not know these commands.
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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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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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Jun 4, 2013
Are there any best practices for preventative maintenance on Catalyst Chassis switches. Looking to build a PMI schedule for a customer. Or is there evidence not to perform it at all. Things like re-seating line cards, cleaning fan exhausts, etc.
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Jul 1, 2012
I have a problem with the time synchronization via NTP between a Catalyst 2960 and Catalyst 6509. When I configure the 6509 switch as a NTP reference on the 2960, it does not synchronize with the 6509's NTP server. There is no reachability or ACL-related issue between both switches.
As soon as I configure a second Catalyst 6509 (which is completely identical to the other 6509 and in the same subnet) as a NTP server for the 2960, the time sync with the second 6509 happens immediality.
The first 6509 switch works as a NTP reference for at least 50 other switches and routers in the network - so why not for this one more switch? I checked some "debug ntp packet" and "debug ntp events" outputs and can clearly watch the NTP requests going out of the 2960, but on the 6509 just nothing happens - no debug outputs for this specific 2960, while requests from other devices come in all the time.
Maybe you have already experienced this strange behaviour in the past or got some deeper knowledge in the Cisco NTP server implementation. I could think of some sort of "maximum client limit" in the IOS NTP server, but could not find any mechanism like this in the standard NTP specification. Eventually, you can approve that this is a IOS-specific issue.
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Feb 15, 2012
I looking to buy SGE 2010 swith, but I have some question:
1. Can I use 4 SFP ports and stack of two switches at the same time.
2. Is it possible to use for stacking ports other than 24, 48?
3. What is maximum possible number of ports to use for stacking (can I get more than 1Gb thruput).
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Mar 4, 2012
we have 55 of the 1841 routers here, and one of them always boots to ROMMON from a very cold (down 1 hour or more) start. The image on all 55 is c1841-ipbasek9-mz.124-24.T4.bin. 32 MB Cisco brand flash. Here's what's been done thus far:In ROMMON changed to 0x2102. Then 'reset' and the image boots fine. Change config-reg to 0x2102. Save config. Reload and image boots fine again. Wait an hour or more and boots to ROMMON.Boot from ROMMON to USBflash0: Format the CF then copy over the bin file. Change to 0x2102 and save. Reload and image boots fine again. Wait an hour or more and boots to ROMMON.Swapped CF with another unit. Again, works fine to reload, but shut down and restart an hour or more later and boots to ROMMON. Format this CF and copy over image while on router. Image boots fine. Wait an hour or more and boots to ROMMON.In each case of very cold start the configuration register has reverted to 0x0 {why it boots to ROMMON}Tried dx mode with 0x8001. Nothing seen that is unusual to me, but I'm not an expert by any means.It doesn't seem to a CF card problem, but could be a connection to the CF card and then something behind that.
Here is the output of diagnostic boot mode:
Cisco 1841 (revision 7.0) with 116736K/14336K bytes of memory.
Processor board ID FTX1231W0JA
2 FastEthernet interfaces
2 Low-speed serial(sync/async) interfaces
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
[code].....
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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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Dec 22, 2011
I am having issue with a RV082 with firmware:
v4.1.0.02-tm (Sep 16 2011 18:40:48)
On setup 1 I have;Using 2 WAN, 1 from fiber 5mbps symetric fixed public IP and other is DSL private dynamic dhcp address 3mbps/900kbps
On setup 2 i have:Using 1 WAN, from fiber 5mbps symetric fixed public ip Both router have exact same firewall configuration, subnet and port forwarding and we have the seccont backup DSL coming in a few day for setup 2.on both setup, the RV082 is the main internet gateway/firewall for a set of server...
Setup 1 work perfectly and been online for 2 week (since install) without issue
Setup 2 worked for 2 day then had to reboot, then work for few days then need reboot, now it look like it need to be rebooted every day. the internet just stop working and a simple reboot does the trick... also, when that happen I can stil remote in server that have port forwarded in the router or connect to router management port, but internet on the server is down... I tried opendns and google dns on both WAN connection and still no luck.I have followed instruction on various support forum;
-more reliable dns server
-lower MTU
-failover vs load balance
-disabling SPI and DoS protection
at this point I'm about to swap both router to see if it not a defective hardware or disconnect DSL WAN on setup 1 to see if its more stable but the whole point of installing this router was for Internet redundancy which so far dosent work as expected.
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Oct 2, 2012
I have a few sites all running Cisco ASA 5510s. They all share the same asa (8.4(4)1) and asdm (6.4.9) version, but their configs differ significantly. I have a cold spare sitting in my office in the event we have a physical failure. Is there a quick and simple way I can load up multiple configs and then boot up the cold spare to then run the config from Site_A or Site_B? Just looking for a quick solution rather than doing a full restore should something fail spectacularly. Nice to say upon bootup, using confreg perhaps, to boot Site_A config rather than Site_C.
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May 31, 2012
I am seeing SNMP coldstart traps that either are delayed by many hours or are false (e.g. right after receiving the coldstart trap a query to sysUptime shows the nodes been up for days).I seen this twice this week in a new network environment for me for two different C2900s running C2900-UNIVERSALK9-M Version 15.0(1)M3 Assuming the coldstart traps are coming from the actual source nodes, I am curious what could be going on here.
1) One guess I have is possibly the system clock changed could cause the SNMP agent to send a false cold start trap. Then my guess is in the device log I should see a system time change syslog message.
2) I recall hearing once that syslog and possible traps messages are held in configurable buffer who default value is 1 and if not sent are held and then suffer a delayed sent. Is it true for both traps and syslog ? In the past I assumed this was simply the logging history buffer and applicable to syslog traps only. My assumption in the past was that last trap or last syslog message is sometimes held on reload and sent immediately after restart regardless of device connectivity to the management target.
I always assumed coldstart traps are never delayed for any reason and that they were pretty accurate substitutes for system reload syslog messages. Does anyknow know any reason for false or delayed coldstart traps on a C2900 with IOS 15.0(1) ?
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May 22, 2012
is there any GUI via web (like SDM for routers) to configure catalyst switches(eg 3560 or 3750)?
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Feb 4, 2011
I have a computer & Bluray..should I use router to be able to use bothe at same time?I have a single port dsl line..or should I get a mulit port "modem/router"?
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Feb 12, 2013
At the moment our whole company is equipped with Catalyst switches ranging from 2950, 2960 to some 3560G and 3750X (Cores). Now I'm thinking of replacing some of the old 2950s (which are only fast ethernet) with some Brocade 6430 or 6450s, since they're so much less in pricing.My concerns though are: will spanning tree work problem free, access lists still work and any other problems I could encounter with interoperability.According to Brocade most of these things should work fine, but I'm searching for some facts from people who are running a heterogenic Network with these two brands (even the same product lines).
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May 20, 2012
I have purchased two catalyst 3560 switches (with 24 interfaces) on Ebay to prepare for ccnp switch exam. It would be great if I have 4 switches. Is it any possibillity to create two logical switches from one? I mean, not by assigning interfaces to different vlans?
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Sep 27, 2010
a customer purchased a ESW-520-24p to be used in a VoIP project. Today we had difficulties connecting it to a Catalyst 3650G switch; We've tried setting the port to trunk, general, customer and access and changed all sorts of VLAN settings on the 3560G switch to no avail: the switches just wont interconnect. While sniffing we saw that ARP requests are even not answered, so something is wrong on a low level, probably with VLAN-ing.if these switches should be able to be interconnected and if yes, what needs to be done to do so?
Secondly; voice will be on seperate VLAN and the client will use SPA942 phones, which have an internal switch that allows to connect a PC to it. I've used this phoned successfully with Catalyst Express switches and I didn't have to do anything for VLAN-ing, this worked "out of the box". Can these phones work with the Small Business switches as well?
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Jan 13, 2013
I had connected a computer and NTP to the SG500. i had successfullly sync the internet time on the computer. but when i type 'show clock' on the terminal. The switch did not manage to sync the ntp time.
clock timezone sg +8
clock source sntp
sntp unicast client enable
sntp server 192.168.4.36
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Sep 25, 2012
I'm new to the Cisco forums and new to Cisco switches. We just purchased 3 new SGE2010P's and 2 SGE2000P's last week and delivered on Monday.It basically boils down to this. After configuring the system time and hitting Apply and the saving the Running config to the Boot Config and then Restarting the switch the time and date do not remain configured. It other settings but not the date and time.
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Mar 20, 2011
I have 2 network adapter on my PC , but i cant use this 2 internet connection at a time, these connections are taken from main router. is it possible to increase my internet speed ? . i can use each connection seperatly, if one connection remove another will work,
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Jul 25, 2011
I have a CiscoWorks LMS 2.6 and i would like to know if the new Switches Catalyst 2960-S Series are supported with this LMS version?
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May 24, 2012
Had laptop connecting wirelessly perfect with no problems. We then added another laptop and PSP 3 to the house hold. Any of the 3 devices will connect to the internet via wireless but ONLY one at a time. If you are connected with one and turn on one of the others it will kick the one off that you were on and only 1 device can use wireless at a time?
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Apr 12, 2012
Device: Cisco 3550T Catalyst ...Tested working all ports Configured Speed/Duplex both manually and set to auto with same result Problem: No connection when connected to specific Motherboard/Lan chipset that is using Realtek PCIe GBE Family controller (NIC)
Motherboard1:When connected to the 3550T the LED is amber for maybe a minute then goes off
Motherboard2:When connected to the 3550T the LED is Green but Motherboard Nic is amber.In windows under adapter settings, Local Area Connection Both Show red X
Motherboard1:
Os: Win7 Sp1 x64 w/latest updates
Mb: Gigabyte GA-P55A-UD3 v2.0
LAN: Realtek RTL8111E
Motherboard2:
Os: Win7 Sp1 x64 w/latest updates
Mb: Gigabyte x38-DQ6 v1.0
LAN: Realtek RTL8111B
The ports are only configured with
Switchport access
No other filters or access list? I have tried on multiple Cisco Switches 2950T, 3500 and 3550T with same result. what odd is these pc's can plug into a Netgear or ActionTec(Verizon) type of switch and work fine. Is there some command I need to apply to those ports to make it work with these GBE controllers. Or How do I get these Gigabyte Mobo(NiC) to work on Cisco Switches?
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Mar 22, 2012
configuring 802.1x authentication on ACS 5.1.0.44 & Catalyst 2960S switches.All the documents i have found seem to have incorrect screen shots or missing steps.I have found a doc external to Cisco [URL]however this just hangs when attempting to complete the task in figure G.The other docs are for configuring IBNS & assume that 802.1x is already configured.
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Feb 10, 2013
We have 12 Catalyst Blade Switches 3020 for HP running IOS Version 12.2(55)SE. In the configuration of these switches I see the statement shown below.
no spanning-tree vlan 34,45-55,70,600,643,840,843-850
The 12 blade switches are configured as VTP clients and running VTP V2. I did not configure the statement shown above. It appered by itself. And even if I delete it, it will reapper. (The blade switches are interconnected to two 6509s. The two 6509s are the STP root and VTP bridges. I configure Vlans and STP on the 6509s).
why the statement above appers on the blade switches 3020s?
I mean I use other Cisco switches such as 3750s and 3560s and I have never seen the statement above appear by itself.
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May 14, 2012
have setup a small lab as per CBTNuggets. Everything was going well until I introduced a second switch to create a trunk. Now I cannot ping between my two switches. Both show operational mode as down:
SWITCH1#show interfaces f0/12 switchport
Name: Fa0/12
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
[code]....
I have tried to allow all vlans or vlan 1 specifically and the output of the above doesn't seem to change. I am wondering if there is something in the config-register that is preventing trunking, but I don't really know enough yet!
The output of my second switch is identical to this one, the only difference is that I have it configured as a vtp client.
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