Cisco Switching/Routing :: 2821 - Interface Hangs / Stuck After Few Hours?
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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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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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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Apr 8, 2013
I am having an issue pinpointing why my 2821 router is discarding so many packets when transferring data to our second site. The traffic flows from the local lan, to the router, where it is redirected via WCCP to a WAN optimization device, back to the router and over a GRE tunnel to the second site where the same process happens. The traffic does get there, but the LAN/Repeater router interfaces have around 20,000-60,000 input drops an hour. From the output below, it looks like traffic is being dropped by the RP.
I just restarted the router as a last resort, and here is what has accumulated in the last 30 min:
FastEthernet0/0/1 is up, line protocol is up
Hardware is Fast Ethernet, address is 0025.840c.7680 (bia 0025.840c.7680)
[code]....
And CPU never goes above 40%
100
90
80
70
[code]...
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May 1, 2013
Few months back I had purchased this Router. But I did not use it till last week. Since the time I have installed it, it does freeze often (between 5 to 30 hours).
I can connect to devices within the subnet, but not elswhere. I have to remove the power and plug it back for it to respond. I have updated the firmware to the latest one that was on the Cisco site.
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Feb 18, 2013
Region : India
Model : TD-W8968
Hardware Version : V1
Firmware Version : 0.6.0 1.1 v0005.0 Build 120926 Rel.27100n
ISP : BSNL
I Bought this w8968 a month back.. It was working alright till a few days back. When i connect and start browsing or downloading, it goes OK.. but after a few hours(sometimes 2, sometimes 1), It stops responding and I couldn`t ping 192.168.1.1 either through WiFi/Ethernet. Status indicators for DSL/WIFI/Internet/LAN all glowing as though nothing wrong with them..? The router is not that much hot when this happens.. When i switch off the router and then on, The Prob gets solved only to reappear again in 1/2/3 hrs..
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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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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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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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Apr 24, 2012
the inside interface on our primary ASA seemed to "hang". It dropped all the packets it received. Because the interface didnt go down, failover didn't happen. Device's info;
-Cisco Adaptive Security Appliance Software Version 8.2(3)
-Device Manager Version 6.3(3)
-Hardware: ASA5550, 4096 MB RAM, CPU Pentium 4 3000 MHz
-Internal ATA Compact Flash, 256MB
-BIOS Flash Firmware Hub @ 0xffe00000, 1024KB
I attached a capture picture shows that traffic didnt go to the roof when the issue happened. Why the interface would "freeze" randomly?
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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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Nov 12, 2011
I have four-switch Cat 3750 stack that has been working reliably for a couple years. Suddenly the other morning it reboots itself, and has been doing so every 24 hours since. take a look at the attached log? This should really be a Smartnet thing, but as it turns out the warranty we have on this is not Smartnet .
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Apr 15, 2013
it is possible to schedule when to send logs to a syslog server (Switch Catalyst 3560) ?
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Mar 7, 2012
Today one of our 9 Cisco switches a "WS-C2950S" (we also got 2 other WS-C2950S on same network) stop responding icmp ping packages. When i tried to telnet the switch its network was unreachable but i was able to see its existance from other switches by "sh cdp neig". So i decided to fix the situation on a suitable night time work, checking by console cable or even rebooting the device.
Then i started to wonder... what this could possibly be about?We have like 40 clients behind that switch and there was no communication problem during the problem.
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Mar 19, 2013
I have a SUP720-3BXL that will not boot. It will get stuck at booting from the SP. It never switches over to the RP. [code]
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Jan 23, 2013
I have just received a new Cisco 3750G Switch from my parent company. When attempting to install the switch, I discovered that it will not boot to CLI, only to the bootloader. After using the command boot, the switch attempts to boot the most current IOS version, but fails, stating "error loading XXXXXXXXXX.bin".
Obviously, I just need to get a functional version of the IOS onto the switch to boot, but the problem is exactly how can I do that? All (or most) the commands with which I am familiar are unavailable in the bootloader, so all methods known to me fail. Is there a simple way (maybe using the copy command?) to put the .tar or .bin file onto the flash?
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Jul 10, 2011
I have a couple of 114n APs in my network and the CAPWAP uptime and AP uptime are almost the same. But there is one which always resets after some time. I have moved across to another switch port but the issue persists. I have other 1141 and 1131's on this switch and no problems. The keep alives between the AP and Controller is regular. I can't get more info from the traps as the reason code is always;
" AP associated to Controller is UP. Reason: Radio interface reset due to Init"
"AP associated to Controller is down. Reason: Radio interface reset"
"AP associated to Controller is UP. Reason: Radio interface reset"
####Only 2ice was the reason code "Operator changed 11g mode". I have seen some posts about similar problems but there hasn't been any concrete solution provided.
note that RLDP is disabled, Primary discovery timer is 120sec, and the version is 7.098
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Oct 3, 2010
We've got a cisco 2821 router which periodically stops routing all traffic. It seems to happen about once every 2 weeks, and I can't find anything that could be causing it. There are no entries in the log and the router stays up and running but requires a restart to begin processing traffic again. We're running 12.4(13r)T11.Any thoughts, or troubleshooting steps to track this down?
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Mar 12, 2013
I start configuring Cisco 2821 router for multicast . First short description and attached sheme explanation. Let we say I have small network with 100 users. One router and Cisco switch 3560. Two VLAN’s, one for data another for multicast. Data from internet works fine but now I want to connect multicast servers (or source of more multicast streams) from another subnet. Router have three interfaces.I expect there should be no problems with multicast configuration, but unfortunately it is not like I expect. What I did ?
First step: enable multicast routing
Second step: on both interfaces (Fe 0/1 and Fe 0/2) - ip pim sparse-mode
Third step: configure switch that users are connected to access port in VLAN 222 (temporary to see if multicast work)
When I start VLC on computer nothing happend. If I try to connect computer on same subnet where is source of multicast streams it works fine.What I am doing wrong ? Is there anything about routing ? All subnets are directly connected. RP is not needed if I have one router or ?
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Jun 25, 2012
I have just bought myself a Cisco 2821 ISR.At present in my home I have a Cisco 2621XM. Fast Ethernet 0/0 is connected to a 3524XL as a trunk to provide my LAN with inter-vlan routing. it works great. Fast Ethernet 0/1 is connected to my ISP's cable modem and uses the command "Ip address dhcp" to get an IP and all other info from my ISP.FA 0/1 is Ip nat outside and the FA 0/0 and all sub interface like 0/0.1 .24 .168 etc all ip nat inside.I get intervlan routing and access to the internet via this router.I have this 2821 to replace the 2621XM as I plan to run CME on it and want gigabit routing on my vlans as at the moment on the 2621 routing between vlans it at half duplex or seems to be.I have configured the 2821 to ip nat outside on gig 0/0 and ip nat inside on gig 0/1 and all of the sub interfaces (same setup as my 2621 but with gig ethernet)I have no access to the internet at all but I can ping www.google.co.uk and other domain names from the terminal session when I am connected to the 2821 via the console or telnet/SSH. the gig 0/0 has an IP assigned from my ISP too but no other nodes on the network can ping outside.Am I missing something here? the version of IOS is V 15.
My access list goes someting like
access-list 1 permit 10.0.0.0 0.255.255.255
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 100 permit ip 10.0.0.0 0.255.255.255 any
access-list 100 permit ip 192.168.1.0 0.0.0.255 any
and so on
I still cannot access the internet.....
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Oct 30, 2011
Stuck at Initial stage CISCO pix 515e
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Dec 16, 2012
I have 6509 E. Actually what happen it last 3-4 times it reload its self and got stuck in rommon mode, i tried to boot it with boot by connecting a console cable on supervisor 720 2b. What and where is problem and why is stuck in rommon after reload.
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Jan 25, 2013
My Cisco seems to be stuck when it boots up, with the following:
Upgrade ROMMON initalized
And it goes on with self comperessing image then an OK but then it starts loading again all over.
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Oct 29, 2012
After a power outage our standby VSS switch has not recovered. The switch keeps cycling through its initialization and then powers off all modules.
The Dead peer detection is working and VSL links are up.
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Feb 17, 2013
I have a Catalyst 3560-X PoE that suddenly stopped working. I plugged in via console and below is the output I received. It scrolls constantly and I am unable to enter ROMMON mode or stop it from scrolling. I've read of a possible problem with the IOS version but I'm unable to verify due to not being able to stop the scrolling.
Switch uptime is 4 minutes, 4 seconds
cisco WS-C3560X-24P (PowerPC405) processor (revision A0) with 262144K bytes of memory.
Processor board ID FDO1522R2AY
[Code].....
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Jul 12, 2012
We did an upgrade from NX-OS 5.1.5 to 5.2.4 and found all M1 line card interfaces were stuck in initializing state for long time.'show module' status says ok. And we cannot execute shut/no shut command under the interface. N7K-M108X2-12L & N7K-M148GT-11 are the two M series cards. Only option was to downgrade back for the time being.
N7K01# sh int e1/1 | in down
Ethernet1/1 is down (initializing)
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Jun 2, 2013
I have configured my new 3850 using the command line and all works well. I logged into the web interface expecting to see device manager with a pretty image of the switch etc.
However I am presented with the Express Setup page and even if i fill in all of the details again and click submit then nothing happens and this is all I can get.
I have version 03.02.01SE software.
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Apr 27, 2011
I have a 7600 with ws-sup750 and when it boots it displays these errors:
Cisco IOS Software, s72033_sp Software (s72033_sp-ADVIPSERVICESK9_WAN-M), Version 12.2(33)SXH2a, RELEASE SOFTWARE (fc2)Technical Support: [URL]
Firmware compiled 07-Apr-08 22:12 by integ Build [100]
00:00:05: %C6K_PLATFORM-0-UNKNOWN_CHASSIS: The chassis type is not known.(0x6003)
[Code]....
Then it got stuck in rommon, i tried using a 7200 pcmcia card (I downloaded the 7600 IOS there) but if i do from rommon boot disk0:
it complaints with :open: file "c7200-atafslib-m" not found so, it doesn't boot.
Anything I can do to be able to boot this device ?
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Nov 18, 2012
We have a couple of 7911 that get stuck in Registering, each monday. During the week, no user reports the problem. But after the weekend, we get ready to hear complaints from our collegues. The same phones often experience this issue, although the other phones report no problems. The problem is temporarily solved when we issue "shut/no shut" on switch ports.
phone firmware version: SCCP11.8-5-2S
Interface configuration:
interface FastEthernet1/0/27
[Code].....
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Jun 7, 2012
I have a Cisco 2821 Router. Its ethernet Interface(E1) is connected to an ISP's Gateway.The outside interface IP is 207.x.x.1, The ISP has given 6 public IPs (202.x.x.1- 202.x.x.6) to use in LAN.
I have configured the router`s Internal Interface(E0) with a public IP address. (i.e. 202.x.x.1)
My Internal LAN PCs are in a private range of 192.168.1.0/24 subnet. Now I wanted my PC users to access the Internet while the Routers public IP remains on internal interface. How can I do the same?
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Dec 1, 2012
This is the RVS 4000
Firmware version 1.3.3.5
STAR 9202 Chipset
64 MB DRAM
8MB Flash
DOS, Block WAN Rq, Remote mgmt all OFF
IPSec Tunnel none used
[code].....
Every day or so the Router becomes unresponsive to the HTTP mgmt interface, as well as it no longer offers DHCP services.then this happens the only remedy is to power reboot.
Everything comes back online just fine, however, the LOGS are initilaized so no data to figure out what`s going on.My next step is to setuo a syslog server and have the logs copied out.( No, I have no Torrents running at all, but I do have several devices like AppleTV, PS3s etc that run streaming Video plus I have the SPA3102 )
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Dec 6, 2011
I have a 2Fe-2W Card and wanted to find out if it can be picked up and installed on a Cisco 2821? Below is the version
Cisco IOS Software, 2800 Software (C2800NM-ADVENTERPRISEK9-M), Version 12.4(8a), RELEASE SOFTWARE (fc2)
Technical Support: [URL]
Copyright (c) 1986-2006 by Cisco Systems, Inc.
ROM: System Bootstrap, Version 12.4(1r) [hqluong 1r], RELEASE SOFTWARE (fc1)
System image file is "flash:c2800nm-adventerprisek9-mz.124-8a.bin"
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May 29, 2012
According to my boss every 3 to 4 months he has to restart our 2821 with a 16-esw module installed because of a low memory issue dealing with CEF. Here is the exact error message.
%% Low on memory; try again laterJun 8 11:18:51.777: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition. It can be re-enabled by configuring "ip cef [distributed]" Jun 8 11:19:51.823: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition. It can be re-enabled by configuring "ip cef [distributed]" %%
Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
Jun 8 11:20:51.868: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition. It can be re-enabled by configuring "ip cef [distributed]" Jun 8 11:21:51.914: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition. It can be re-enabled by configuring "ip cef [distributed
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