Cisco Switching/Routing :: Catalyst 2948G Switch Got Dead
Feb 15, 2012
I had an old Cisco Catalyst 2948G switch that I have not used in about 7 years down in my basement. I powered it on and went through the process of clearing out the configurations, and I got to a point where one of the commands to clear out the config asked me to install jumpers for "ROM" and "ERASE". There is a third jumper labeled "NO BOOT". They are numbered J6, J7, & J8 respectivelyI found the jumpers inside and put the jumpers on them and ran the command expecting it to remove any old configurations I had on the switch and bring it back to factory state, but I was wrong.
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Dec 10, 2012
I had an old Cisco Catalyst 2948G switch that I have not used in about 7 years down in my basement. I powered it on and went through the process of clearing out the configurations, and I got to a point where one of the commands to clear out the config asked me to install jumpers for "ROM" and "ERASE". There is a third jumper labeled "NO BOOT". They are numbered J6, J7, & J8 respectivelyI found the jumpers inside and put the jumpers on them and ran the command expecting it to remove any old configurations I had on the switch and bring it back to factory state, but I was wrong. This switch runs CatOS, not IOS.When power is applied to the switch, the fans turn on as normal, but no LEDs are lit on the front. There are green LEDs lit next to the jumpers inside, but that is all. I am not able to get any response from it on the console at all anymore.The LEDs that are lit green inside are labeled "CR5" and CR6".
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Jan 31, 2012
I work at a hospital and we have 3750X-48P switches in stacks in various locations throughout the hospital. We have noticed that when an EKG machine is plugged into one of the ports on some of these switches and the EKG machines are set manually to 100/Full, the ports are no longer usable until the switch is restarted. The switch is configured for auto. If the EKG machine is set to auto, it will work and not cause problems. The link on the interface will show up/up and there will be output packets increasing. However, there will be no inputs on the link and the port is unusable. Unfortunately, even when the device is removed, the port becomes unusable for any device. Is there any way to fix this problem without rebooting the switch?
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May 9, 2012
i have recently tried to change the catos on a Catalyst 2948G-L3 and since then i have the following message in a loop :I know that the solution would be to download a new valid image from tftp via the rommon prompt but what i dont undertand is why i cant access the rommon prompt. It justs boots with the message above in a loop
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Feb 24, 2013
I have a Cisco 4500. Recently some of the ports seem to have "died"/ will not supply Poe to phones. Some work for data only. Other do not work at all. The switch has been restarted, this made no difference.
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Feb 16, 2013
I have 2 - WS-C2960-24TT-L switches. Both are experiencing the same issue. Upon booting them up, all lights flash on the mode indicator panel, then it goes directly to a solid green "SYST" light. Nothing registers across the console cable. I have tried different baud rates, cables and computers. None of the ports come up regardless of how long either switch is powered on. Holding the Mode button during boot up produces the same result, nothing. Sounds like they are dead, however, I thought this would be the place to go for ideas. Can I revive these switches?
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Feb 16, 2012
I have a Cisco 2948G switch that I am trying to communicate to through this program. It has both an IP address and is hooked up through a cable. I can get Cisco Network Assistant to come up and ask for it's Username and Password, and that it is where I am stuck! I have no clue as to what to put in there as a username and password? I do have a password setup on the switch to login in to it during terminal mode, but that is it.
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Nov 20, 2009
I have a Catalyst 4006 switch in production and a spare switch of same model. I have to quickly copy the configuration from production switch to spare switch (both L2 and L3 configurations) How do I do that?
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Oct 25, 2012
I am trying to find the serial number on the CLI that matches the serial number sticker on the back of a WS-C2948G-GE-TX switch that runs CatOS. I am running code cat4000-k9.8-3-2-GLX.bin. I have 4 different switches and all the stickers have a serial that starts with JPE.. and both "show version" and "show sprom 1" and "show sprom 2" gives me a completely different serial number that starts wtih JAE... All of these serial numbers I get from the CLI match with each other. The command "show sprom chassis" says "Feature not supported."
Is it possible to find the serial number that matches the sticker from the CLI on a 2948G? Why does Cisco make this so confusing?
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Dec 17, 2011
I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net.
My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20
I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to (vlan2)my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to go out to the internet. I think it has to do with the routes. [code]
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Apr 16, 2012
I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net. My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20,I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to (vlan2),my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to,go out to the internet.
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Jun 13, 2012
I'm having trouble setting up SSH on my new Switch.
no aaa new-model
aaa authentication login default local
ip domain-name king.local
[Code].....
I would like to be able to use Vlan 10 192.168.155.1 for SSH remote management.
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Aug 20, 2012
i try to implement layer 2 qos in 2960. when i complete to configure the switch, i want to test the qos.PC1 conect to switch port 1,PC2 conect to switch port 2 . PC1 is source teminal. i use skydata.exe and FTP for the test.
when use the skydata ,the PC2 speed can reach 10mbps.when use the FTP , the PC2 only can reach 1.2mbps. why?
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Apr 29, 2012
I can use Putty to SSH into my new switch (Directly connected to my laptop with ethernet cable), but I cant log into my switch.
Sent username "admin"
admin@192.168.251.1's password:
Access denied
It doesnt like my password, but I have only set 1 password (king) on this switch. I've configured 3 other switches with SSH and had no problem. Been trouble shooting for awhile and It'd be great if I could have a 2nd set of eyes take a peek, Also, my running config is attached.
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Dec 12, 2012
Does the port adaptor PA-MC-2E1/120 work with the Catalyst Switch 6506E (Sup Engine: 720-3B)? We have bought a Enhanced FlexWAN card for this port adaptor.I read through the cisco website and seem to get confusing answers whether they are compatible.
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Oct 14, 2012
I am using a catalyst 2970 switch for 2 vlans. Corporate data and a separate VLAN for backups. What I want to do is create an LACP etherchannel to the switch and also trunk these ports so the server is part of both VLANS.Due to fact that some of these servers are on totally separated networks, they really shouldn't be able to talk to the backup server. Creating the VLAN for backups works to achieve this. I plan to create inbound ACLs on each port to allow only the ports and IPs for the backup network and allow everything we need for corporate data.I read somewhere that you can't have ACLs on an etherchannel and I just want to get it all straightened out. I notice I can't add an access group to the port-channel itself but I can on the port- channel member ports. Is this all I need to do or does this not work?
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Jun 8, 2013
I have inhereted a network in a school that is using a Cisco Catalyst 500 series switch. Previously, it appears that this switch was never managed (just plugged in and using it's default configuration). I am trying to change that and be able to control the switch using the Network Assistant or just the web-based device manager. I understand that you cannot perform the initial configuration with anything past Windows XP, because the broadcast flag setting past XP causes an issue where the IP address of the management computer is assigned but not the default gateway. Despite this, I am still unable to connect to the switch for management purposes. Here is a list of the steps I have taken, all of which have been unsuccessful:
1) I tried using a computer running Windows XP. The same issue occurred. It was assigned an IP address from the switch but did not get a default gateway. It was unable to access what should have been the default IP of the switch; 169.254.0.1
2) I tried it in Windows Vista by editing the registry to turn broadcasting off. It still did not work.
3) I tried it in Windows 7. Still no luck.
4) In all 3 operating systems, I tried using the "Advanced" setting in the TCP/IP configuration to add a default gateway of 169.254.0.1 to no avail.
[URL]
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Oct 16, 2012
is it possible to run a Catalyst 4500 as pure Layer 2 Switch, i.e. disabling "ip routing", but still managing the switch via Fa1, i.e. the defautl mgmtVrf vrf ?I tried the following:
!
no ip routing
!
interface FastEthernet1
ip vrf forwarding mgmtVrf
ip address 192.168.1.1 255.255.255.0
!
ip route vrf mgmtVrf 0.0.0.0 0.0.0.0 192.168.1.254
ip default-gateway 192.168.1.254
I was not able to reach the Switch even from the same subnet. Only after enabling ip routing I could manage the Switch. I haven't found any command to set ip default-gateway for a vrf. Any workaround to keep routing disabled, but still manageable via VRF?
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Jan 9, 2012
Currently we have cisco 4503 switch in one of our location without redundancy which servers below,
300 user (desktop & ip phones)
5 vlans
15 access switches are connected
one L3 connectivity.
Actually i want to understand is it really necessary to have 4503 or we can go for 4900 series as we are planning to have redundancy in distribution segment.
Which is the best L3 switch in the above scenario and how to measure the overall performance of the current 4503 switch...
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Feb 2, 2012
Would like to know if the Cisco Catalyst 4900M Switches are stackable?
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Jul 16, 2012
one of the most widely deployed switches in the world. The "Swiss Army knife of network", can do routing, switching, security, wireless and almost everything that you would want your core switch to do. Remember to use the rating system to let Akshay know if you have received an adequate response.
Akshay might not be able to answer each question due to the volume expected during this event. Remember that you can continue the conversation on the Network Infrastructure sub-community LAN, Switching and Routing discussion forum shortly after the event. This event lasts through July 27, 2012. Visit this forum often to view responses to your questions and the questions of other community members.
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Feb 19, 2013
In my ongoing project i need to monitor cisco 3750-X port status (uplink/downlink) i.e. whenever there is some problem at a specific port. I need to monitor it through an OPC server and right now what i am doing is as follows: i am using Kepserver and i have added SNMP driver in it for that purpose i am not a networking expert but what i have learnt till now is that SNMP agent (that resides in switch) delivers the status of MIBs to SNMP manager ( which in my case is kepserver (opc server)) for the above purpose i am adding IF-MIB to monitor OID 1.3.6.1.2.1.2.2.1.8 (which shows port statuses) but when i add that in OPC server then it indicated that this OID is not available in the Switch ( it might be disabled) so i need to ask if there is any way to enable OID's in a switch,
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Jan 23, 2013
In a switch catalyst 2960 the IOS is erasing in flash, for the transfer IOs respalding to flash no function the current command. how is the method.
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Feb 20, 2012
How do I do a factory reset on a Cisco Catalyst WS-C2960G-8TC-L switch?
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Jan 5, 2011
I have got a new 48port Cisco catalyst 4948 switch, which I configured as a VTP client and connected to Cisco 3750 which is a VTP Server (this switch is on production network). I connected port g1/0/48 from 3750 to port g1/48 on 4948 through a straight cable and made both ports as trunk port (I also tried through cross cable). The problem is these two switches are not detecting. For testing I connected a PC directly to one of the port on 4948 (making that a switch port) still the LED on switch didn’t glow up. Is there any special command needs to be run on 4948 switches to activate its physical ports?
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Sep 19, 2012
How can I find out the firmware versions for IOS, modules and components of Cisco catalyst 4500 series switch. I can see the firmware version of IOS in show version command but how can I find it out for the modules or components of the switch.
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Mar 28, 2012
I live in a condo building that uses 3 Cisco Catalyst 3550 switches connected to a Comcast router with 100 Mbps download. Currently we regulate bandwidth by providing each user with 3 Mbps download. Even if only two people are active they still only get 3 Mbps download. I would like to set it up so if two people are using they each get 50 Mbps; a sort of 'dynamic qos. Is this possible with these switches? Would we have to purchase a Cisco router in order to provide this feature?
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Feb 20, 2013
I want to configure my switch via console cable, the switch boots up normally, and there are no configurations present on the switch. However, anything I type does not appear on the terminal client. I used several terminal clients (TeraTerm, PuTTY, HyperTerminal), all latest versions as well as different PCs. I even forced the switch to rommon mode, still, anything I type does not appear on the terminal client.
Here's the output of TeraTerm:
Boot Sector Filesystem (bs) installed, fsid: 2
Base ethernet MAC Address: e8:40:40:06:f0:80
Xmodem file system is available.
The password-recovery mechanism is enabled.
Initializing Flash...
[code]....
After the last line, I can not type any command at all. I encountered this on three 2960 switches that we have here in our laboratory.
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Apr 26, 2012
I'm attempting to configure a Catalyst 3560-X Switch to act as a DHCP Server. There is documentation that supports this feature. Below is my config procedure however after the completed procedue no IPs are handed out to clients. [code]
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Nov 24, 2011
I try to connect two switch Catalyst 3750G without success.switch1 (192.168.2.10 vlan 2) <=> (192.168.2.11 vlan2) switch2.I use this configuration for swich1 [code]
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Feb 23, 2012
have a Switch I bought off a guy at work. Just to get into the Switching world of Cisco. He doesnt know the password on it and i cant reset the switch. I would like to mess around with it more but it doesnt load the flash or helper. It just sits there and holds. I have tried the password recovery and everything. Trust me, everything is correct, but it wont work for me. I cant load a new image to it because I dont have access to a server to get it from.
Base ethernet MAC Address: 00:0a:8a:94:58:c0Xmodem file system is available.
The system has been interrupted prior to initializing theflash filesystem. The following commands will initializethe flash filesystem, and finish loading the operatingsystem software:
flash_init load_helper boot
switch: flash_initInitializing Flash...flashfs[0]: 3 files, 1 directoriesflashfs[0]: 0 orphaned files, 0 orphaned directoriesflashfs[0]: Total bytes: 3612672flashfs[0]: Bytes used: 1815040flashfs[0]: Bytes available: 1797632flashfs[0]: flashfs fsck took 3 seconds....done Initializing Flash.Boot Sector Filesystem (bs:) installed, fsid: 3Parameter Block Filesystem (pb:) installed, fsid: 4û
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Sep 10, 2012
I think choose this SWITCH 4506-E and I need running only features L2 Metro, but Idont known what IOS for this!
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Sep 18, 2012
I want to configure switch port bandwidth limit for my Catalyst 2960-48, is there any hardware / ios limitation? can I configure it at all 48 switch ports?
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