Cisco Switching/Routing :: 3640 Router Hangs
Sep 23, 2012
The Cisco 3600 series (3640) is hanged during booting proccess, the IOS is decompressed, but after some text it hanges and I even cannot go to user exec. ROMmon and bypassing the config setting, but the result is still the same.
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Oct 1, 2012
i am running c3640-is-mz.124-21.bin on a cisco router 3640. i am trying to create a monitor session in the CLI and everytime i type the command Router(config)#monitor session 1 interface ethernet2/1 % Invalid input detected at '^' marker. Router(config)#monitor session 1 interface ethernet2/1 ^% Invalid input detected at '^' marker. i get the error invalid input ?
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Nov 13, 2012
Yesterday my router was hangs and my services was stuck. I start the router hard booted and it works fine.This was second time i was facing this kind of scenario. The attached are the "show tech support" of the cisco router 2821.
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Apr 28, 2013
I'm using 3640 router running on c3640-js-mz.124-25d.bin IOS. I'm using NM-1A-OC3SML= (ATM OC3, long reach single mode) interface card. Now my pc is connected an fast ethernet interface of the router. Need to know the ATM configuration on this cisco 3640 router in order to achieve the ATM over ethernet traffic get success. As of now i've confugred as below but it's not working it seems.
interface ATM2/0
bandwidth 120000
ip address 10.2.2.1 255.255.255.0
no atm ilmi-keepalive
pvc 0/36
protocol ip 10.2.2.10 broadcast
cbr 70000
encapsulation aal5mux ip
let me know the correct encapsulation type for the connectivity.
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Mar 21, 2013
I got this 3640, trying to apply a service-policy (output and input), but seems like I do it something wrong...because he only apply the output policy... here the config, I already try to config the service police inside the fa0/0, but is not showed at all, he only show the output, its like I never apply that
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Apr 8, 2013
I got some unexpected System crash, and this happens to 2 different routers on the same network.. (We suffer a Crash and change the router, happens the same to the new router after some time, maybe 40 minutes!!)
Here is the last console report for the new router....
%Software-forced reload
Preparing to dump core...
4w1d: %SYS-2-WATCHDOG: Process aborted on watchdog timeout, process = IP NAT Age
[Code]....
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Nov 1, 2011
We have a Cisco 3640 router running c3640-is-mz.123-3g.bin Switching ports are devided into several VLans. Each VLan has its own IP subnet. We can't ping IP address X in subnet A from subnet B unless we log into the router and ping it from there first. (and then the IP address will show up in "show ip arp" command. Then we can ping X in subnet A from subnet B, and browse web on device X from subnet B, etc. )
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Dec 6, 2011
So I have 2 routers (cisco 3640) that each go to their own ISP and then back to the same switch. I have setup ospf and glbp, and now have pretty good redundancy. If either internet connection or routers go down everything is still golden.
So I was thinking that if an interface went down then the router would not be load balanced with glbp which got me thinking whats the best way to get interface redundancy (and I was going to add a 2nd switch with the second interface).
1) Setup BVI on the 2 interfaces.
2) Setup a 2nd interfaces (on each router), I would have to split the subnet, for instance: [code]then the machines could be on the subnet 192.168.0. 0/23 and setup glbp for 1 ip across all 4 interfaces (I'm not even sure if you can do this but think it would work).
3) Is there a way to utilize etherchannel or anything like this
A negative to option 2 would be that if 1 of the interfaces went down, all the sudden 2/3 (or so) of your traffic would be going through 1 router.
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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:
2610:
Current configuration : 1071 bytes
!
version 12.3
[Code]...
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Dec 28, 2011
I have two routers at our core data center, a 3845 and a 3640. These are configured with GLBP. There are 4 remote sites:
Site #1: One T1 link to the 3825
Site #2: One T1 link to the 3825, and One T1 link to the 3640
Site #3: One T1 link to the 3825, and One T1 link to the 3640
Site #4: One fractional T1 link to the 3825, and One T1 link to the 3640.
My question regards site #4. If i understand correctly, GLBP works on the premise of "host" balancing, and not true "load" balancing. The reason I ask is that the large majority of our WAN traffic is from our Exchange server to our remote sites. In the case of site #4, our exchange server is sending traffic on the fractional T1. Is there any way with GLBP to either split this traffic from a particular host across two links in a round-robin fashion, but leave other hosts to travel wherever the router sends them, or, to force at least our exchange server to use the full T1, rather than the fractional?
I've read up on the weighting mechanism, and it appears that tracking an interface has nothing to do with bandwidth use. If I understand correctly, if I were to track the Site #4 PPP to the 3640, and give a weight of 10 to glbp on there, it would really only take affect if the interface is down. It will have nothing to do with host AVF election.For the record, exchange traffic is constant to this site, so there is no chance for the host connection to reset and potentially elect to use the larger pipe. I would like to "tweak" this to make better use of available bandwidth.
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Jun 25, 2012
I have the cisco 3640 with IOS Version 12.2(46) , and it with DRAM:32M , Flash:8M.What IOS version can support IPv6 RIP in the hardware limit?
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May 28, 2012
, I am trying to change the default IP address in vlan 1 on a cisco 861 but everything I do so my connection via SSH hangs and all ssh/telnet attempts are refused.
my commands are as followed:
int vlan 1
ip address 192.168.1.1 255.255.255.0
[hangs]
my current vlan 1 address is 10.10.10.1 255.255.255.0
my vlan1pool on dhcp
is an address range of 192.168.1.0/24
do i need to update something in the authenication to allow connections from 192.168.1.0/24 instead of 10.10.10.0/24
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Mar 25, 2012
we're facing a weird issue lately with a Cisco 2821.An interface stops responding after a few hours.The only way to bring it 'up' again is:
Hardcode: duplex or speed
or
shutdown -> no shutdown
there are no errors in the "sho interface" and no errors or entries in the log.
FastEthernet0/0/0 is up, line protocol is up
Hardware is Fast Ethernet, -
Description: Infopoint
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
[code]....
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Jun 12, 2013
After insertion of SFP module in the Switch i have messages bellow and the switch hangs after couple of minutes it restarts
[Code]....
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Feb 8, 2012
I have two routers I am trying to connect via the WIC-2T port. I can ping from router to router, but not from my PC (192.168.2.122) to the 3745 (10.0.1.3)..
3640:
Current configuration : 1846 bytes
!
version 12.2
[Code].....
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Oct 24, 2012
We have a location that currently has one frame T1 and 4 point-to-point T1s. We are looking at adding a second frame T1 to be bonded with the first. Currently, we have an old 3640 router, so I am thinking this would be a good time for an upgrade. Cost is a concern, so I am hoping to buy something refurbished that is newer than what we have now but is not going to cost a ton as buying new would. My thought is either a 2821 or 2921 with 2 HWIC-4T1/E1. I am not familiar with this HWIC just wanting to make sure this a good solution for our situation.
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May 13, 2012
i have configured a cisco router with the following configuration to practice obtaining certificates from a microsoft 2008 server configured as a stand alone CA.this part works okay but what i am trying to do next is giving me a headachei am trying to delete the identity certificate but am having no luck whatsoever
interface FastEthernet0/0ip address 192.168.2.1 255.255.255.0ip nat outsideno shut
interface FastEthernet0/1ip address 192.168.1.1 255.255.255.0ip nat insideno shut
access-list 101 permit ip 192.168.1.0 0.0.0.255 192.168.5.0 0.0.0.255
access-list 102 deny ip 192.168.1.0 0.0.0.255 192.168.5.0 0.0.0.255access-list 102 permit ip 192.168.1.0 0.0.0.255 any
[code].....
i entered the following commands on the router to delete the certificatebut as you can see its telling me the certificate dosn't exist(this method of deleting the cert has come from Richard Deals complete cisco vpn configuration guide) 3Purley(config)#crypto ca certificate chain PurleyPurley(config-cert-chain)#no certificate 61E0446A000000000002% Certificate not found.ps the router is a 3640 running c3640-jk9o3s-mz.124-7.bin
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May 14, 2011
I have been confronted with an issue recently with two of my 3640 series router reloading endlessly.Initially i thought it could be a matter of MEM not well seated, but unfortunately it wasn't the problem.i have attached the gibberish produced when these routers are booted up.Be informed as well that these devices are loaded with max MEM.
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Oct 17, 2011
i have 2 x T1 terminating on border router cisco 3640 route. (configured using multilink interface). Our IP block is routed on this bundled T1 circuits by At&T. I want more internet bandwidth.
1. Can i connect my DSL (on ethernet interface and using static DSL IP) on the same router and confgure two static routes to internet - one to multilink interface and other to ethernet interface (connected to DSL) ?
2. I have many servers using static NAT to external IPs which are routed on T1 circuits. Will it get into issues when communicating to outside? [for example my exchange server, websites etc?
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Dec 26, 2011
I was working as IT Support in an encoding company. I support over 500 desktop users. my problem is about in entire network because i always encounter hang network in my grave yard shift. Our network system set up have domain server, antivirus server, database server, 4 PC's use as backup servers and 3 unit of network attached storage and approximately 500 units of desktop use for production in encoding. I always experiencing network hanging then after all system will be freeze, so i suggest to shutdown all pc for usually in 5mins then turn on again. In an hour the problem is still exist again and again. I did all possible way to make the production smooth run for my whole shift but still after some hours it occurs again. I dont know what would be the possible reason why the network hangs and stuck up. The network attached storage did not reach the entire capacity, the antivirus server is still updated, the domain and database server are working properly even the PC's use as backup server. There is no internet connection we use in production, so i assure that no virus we encounter in all pc. Is it the cabling? or is it the switches?
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Feb 8, 2011
I have a 3640 router with 4 Fast Ethernet Network Modules (1fe-tx, 1fe2w & 2fe2w-v2) and a Catalyst 2912 switch. I can not acheive a link between the 2 devices. All four will not get a link light and the interface(s) show no errors. If I plug the Router nic into virtually any other switch or workstation it works flawlessly. I put a switch between the catalyst and the 3640 and it works without error.
Steps I have tried...
1. Configure interfaces on both Switch and Router to Auto Speed, Auto Duplex2. Configure interfaces on both Switch and Router to speed 100, Full Duplex3. Try Both Crossover and Straight-Through verified working cables.4. Tried a second 2912xl-en switch
Both 2912 switches are factory defaulted, other then the changes I made to the speed and duplex to try to get them connected.Both the router and switches have been doing other functions (seperatlly) within our network for years?So my question is...Why is the NICs in the router compatible with every other vendor other than CISCO?
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Jul 10, 2012
Any issues on Cisco ISR / ISR G2 routers running 15.x code while doing NAT for large quantities of users (3000+) involving lock ups? This seems to be an ongoing issue for a customer. The symtom is present on 2811, 2911 and a 3945. The 3945 never spikes over 10% processor or memory utilization, yet still has these issues. The routers have been tested running 15.0(1)M5, 15.0(1)M7 and 15.1(4)M4 which all showed simular results. Other router side services are running such as NetFlow v9 to two destinations. Another interesting symtom, doing a "show ip nat translations" command will crash the router if executed at its peak usage period. NAT is to a single IP (sourced from outside interface), not a pool.
[code]....
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Feb 28, 2013
i have here an cisco 881 router which has been in service for about 3/4 year now.yesterday the device from one moment to an other stoped working the device does not respond on console, it does not boot (or seems to be booting) and is also not responsive on the reset hole.
powercycle has been attempted but without result. the only evidence that it is alive is the FA leds. they are all constant on.
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May 6, 2012
I have 20 to 100 Mbps(FTTH) line at home. I am planning to put few servers online to serve web pages. I have tried them taking online with normal home dsl routers, but router hangs very frequently.
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Feb 27, 2011
I have a cisco router 1811 when powered displays the output below then it hangs at that point.
System Bootstrap, Version 12.3(8r)YH8, RELEASE SOFTWARE (fc2)
Technical Support: [URL]
Copyright (c) 2006 by cisco Systems, Inc.
C1800 platform with 393216 Kbytes of main memory with parity disabled
[code]....
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Jul 9, 2012
i have a cisco router 7206 ,when i create subinterface with ip , the router hangs , and all interfaces are down ,i just remove interface gi0/1 and plug it again, what is the relaiton between subinterfaces and hanging routers> the problem occurred when i configured sub-interface on GI0/2. [code]
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Jan 1, 2011
I have Cisco 1841 Router with no WIC cards and USB.
Image is ipbase and on the flash. When it boots it gives the error and hangs - I changed the register value to 0x2142 but no change happened.
Following are the capture from the router .
System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
Technical Support: [URL] (c) 2006 by cisco Systems, Inc.
Copyright
[Code]......
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Mar 5, 2013
The router had firmware 2.0.x(?) and I tried to update to the latest FW, according to the webpage that's
FW_E1000_2.1.02.006_US_20130115.bin
Hardware is E1000 v2 according to sticker on back.The firmware update failed (no reason given) and the router now hangs in limbo where all it does is flashing the power LED.I set my PC to 19?2.168.1.2 and TFTP'd the firmware over to 192.168.1.1 - no errors reported and 192.168.1.1 is pingable. Held reset for 30s, then powered down the router for another 30s. On power-up the router still flashes the power LED.
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Dec 3, 2011
Have been trying for the past two days to install a new E4200. It gets to 25% in the setup and then errors out and says I need to contact customer service.
Connecting through a brand new DSL modem that I know works as I can get access through my old router.
My PC (Windows 7) is directly connected to the router. I got to the point where I named the router in the install process the first time, but then it hung.
Have tried to use the CD to re-setup with no success. I've tried the hard reset holding in the button for 10 seconds and unplugging but nothing has changed.
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Oct 13, 2011
I have 2 X E4200 router, one is directly connected to the internet and the other is in the bridge mode connected to the first router. I have apple TV connected directly with the bridge router on one of the Ethernet port.I notice that when you start apple Airplay mirroring on the iPad2 both the routers will hangs with no reason and the only way to fix it is to reboot the routers. I have reset both the routers to factory default twice they both are running firmware 1.0.03 build 14 .
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Feb 3, 2013
I have been through three chat sessions on this without resolution and support tells me just to factory reset. After some time (weeks) after a successful local login to the admin page subsequent attempt to login just hang. After entering the admin password the page changes and says "Waiting" under revolving circles. It will sit there for over 1 hour. I have tried IE, chrome and firefox on Windows 7 and Windows 8 on three different machines and it behaves the same. Of course I have to go through this same process with the support people every time and every time they come to the conclusion that I have to do a factory reset. But so far Linksys denies that there is a defect.
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Feb 12, 2013
recently i bought a x1000 for my home network. I use the x1000 as router an wireless accessPoint between my WAN internet uplink an my home network...yesterday the router hang up completely. internet stoppp working. so i tried to access to x1000 to check if PPPoE connection was still active. But it did not load the webinterface. I tried to connect over WLAN and LAN. Both not working!
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Mar 10, 2012
E3200 firmware 1.0.03 build 9. HP 1012 attached to USB port of the router. On a PC with Win7, Print Preview hangs in all applications. Print... also hangs in all applications. Reboot, re-installation of print driver, change default printer do not fix.
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