Cisco Switching/Routing :: 2811 / Hang And Reboot Router Every 3-4 Hour?

Jan 1, 2012

I have Cisco 2811 secure router in my network.  Seven day before it has been hanging every 3-4 hour. i have updated "c2800nm-advsecurityk9-mz.124-17.bin" IOS in the router.  After that it giving some error and every 7-10 hour network has been delay in LAN as well as WAN and not pinging.

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Cisco Switching/Routing :: 2811 Router Hang Frequently And Restart?

Dec 25, 2011

i have facing problem in my Cisco Secure router 2811.  It hanging every 5 to 10 minutes and restart.  IOS of cisco router is 12.4 ipsecurity. I have attached the error log and configuration file of my router.  Kindly see the log and let me the problem in my router. 

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Linksys Wireless Router :: E4500 Reboot Takes Half Hour

Dec 31, 2012

Not sure if I have a defective router, but if I unplug it I then need to wait at least a half hour to plug it back in. Anytime sooner and it won't broadcast a SSID or connect to the modem. This is a huge inconvenience if you want to change router settings and then you need to restart.

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Cisco VPN :: 2811 HTTPS Sites Hang Through Web Vpn

Jun 27, 2010

Using webvpn on a 2811 w/ adv ent 12.4(20)THTTP sites work fine (in the url-list)
But when we try to use an HTTPS site, clicking on that site just hangs forever.  Debugs show the connection is making it, and the servers are getting the connections...
The destination servers are using self-signed certs, as well as the router.  They are not requiring client certs.

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Cisco WAN :: 2811 Router Crashed And Reboot

Jul 24, 2012

seeing very strange behaviour of router router is connected to switch to provide analog when swich configured as trunk the router crash and reboot but when change to access its stable

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Cisco Switching/Routing :: 3560 Switches Hang Off With Sub Interface

Jul 22, 2012

Was building a small network in Cisco Packet Tracer and ran in to an issue.  I have 4 routers running OSPF, and off one of the routers I have 5 3560 Multilayer switches.  The router that the switches hang off of, I have a sub-interface with dot1q encapsulation, set for vlan 10 and an IP Address.  The switches have interface vlan 10 configures, and have IPs in the same subnet.  From that router, I can ping/telnet to all the switches without issue.  My problem arises when I try and reach those switches from any other router.  OSPF is set to redistribute static and connected subnets.The routing table is populated correctly on all the routers.  When I ping and trace the packet, it looks like it makes it all the way to the respective switch, but the packet never makes it back.  I've played with the default route on the switches to no avail.  Am I trying to implement this incorrectly, or am I just missing something?

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Cisco Switching/Routing :: Hang During Boot Of WS-C4948-S Switch

Apr 3, 2013

I encountered an issue while trying to boot Catalys WS-C4948-S switch. I power on the switch and I'm able to see the boot messages thourgh serial console cable. But it gets stuck at line "Image text-base: 0x1000000, data-base: ..... ". Also I can enter into rommon mode. I tried to use different kinds of IOS images, tried to boot from tftp but with no luck, the issue is the same.
There are no erros on the screen, it just gets stuck when it enters into IOS, so I don't see the IOS prompt.

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Cisco Switching/Routing :: 4507-R Installed At Customer Site Which Hang Twice

Oct 26, 2011

We have Cisco 4507-R installed at customer site which got hang twice and became normal after getting booted.I have analyzed show tech-support for this switch after reboting but not found relevant logs for hang issue,

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Cisco Switching/Routing :: VSS Switch Got Hang After Inserting 6708 Module?

Jan 11, 2012

We having a VSS switch (9 slot chasis) with ios "s72033_rp-ADVENTERPRISEK9_WAN-M), Version 12.2(33)SXI4", slot 7-9 are currently free. We wanted to install WS-X6708-10G-3C module on slot 7. Once we installed the module it didnt come, after waiting for 15-20min again we removed and inserted, but module didnt come up and we could see following logs on the console:
Jan 12 08:57:40.146: %ISSU-SW2_CFC2-3-ERP_AGENT_SEND_MSG: client/entity send failed; error code is timeout
*Jan 12 08:57:40.330: %ISSU-SW2_SPSTBY-3-ERP_AGENT_SEND_MSG: client/entity send failed; error code is timeout
Jan 12 08:57:40.146: %ISSU_ERROR-SW2_CFC2-3-START_NEGO_FAILED: ISSU NTI Client(2040): failed to start negotiation (ISSU_RC_CLIENT_ENTITY_DOES_NOT_EXIST_IN_PEER)


Afer some time VSS switch didnt response to console commands and all the users in access switches were not able to reach the gateway (VSS). Then the problem disappeared once we rebooted both the switches in VSS.why the VSS switch become non-responsive?

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Cisco Switching/Routing :: 3750 Switch Connected Computers Hang For Few Minutes

May 6, 2013

In my customer having 3750 switch and they have simply assign IP address for vlan and enable telnet in switch and other things are same as default switch.In this switch they have connected 8 cisco layer 2 switches(6 managed and 2 unmanged switch) and approximately 5 servers connected in this switch.In a particular interval,users accessing File server are connected to 3750 switch become hanged for few min.This happen for some particular interval.users accessing this server becomes entirely hanged for few min,then i have configured port monitor cmd and i have installed one wildshark tool to host connected directly to that switch.

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Cisco Switching/Routing :: 2821 Router Hangs And Reboot

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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Cisco Switching/Routing :: 1900 Series Router Needs Reboot Every Time Connection Is Lost

Jan 1, 2013

i have a cisco 1900 series router from the isp and we connect it the our router the rv042 small biz, and we have here a cisco catalyst 2950 switch with just default configuration connected to the hosts.
my problem is from time to time that the connection is lost there is no connection with the router and the only solution is to turn off and on the cisco 1900 router and the connection will be back.
do we need to configure the routers and switches? what do you need to configure?

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Cisco Switching/Routing :: 2811 Router - VLAN 531 Configuration

May 22, 2013

I have a Cisco 2811 Router. I have two VLANS on the router. The first one of course is VLAN 1 and the second one is one that I created from reading everything from this forum.. it is called VLAN 531
On VLAN one I have an IP address of and on VLAN 531 I have an IP Address of, now what I can do is this... I can.. from a workstation on the segment, ping and one server on that segment that has an IP address of, which is fine, but what I really want to be able to do is ping our email server which is on a segment and I cannot. Any commands on what I would need to do to make this work as I would like the segment to ping any other part of my LAN of my choosing.

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Cisco Switching/Routing :: Connecting To Internet From LAN Behind 2811 Router And DSL

Aug 31, 2012

I have a Cisco 2811 Router with a NM-16ESW card installed.  I've connected this to my DSL connecting and I'm trying to build myself a learning lab.  From the router I can ping to the internet and back to a test computer I have connected to one of the card's ethernet ports.  From the test computer, I can ping the router's WAN interface, but no further. [code]

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Cisco Switching/Routing :: How To Do Dual ISP Configuration - 2811 Router

Dec 9, 2011

Will 2811 Router with 4 switch port module, How to do dual ISP configuration on this router.

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Cisco Switching/Routing :: Corrupted Memory 2811 Router

Jun 25, 2012

router 2811 has 2 files ios in flash
Router#sh fla
-#- --length-- -----date/time------ path
1     35202336 Mar 3 2008 16:12:28 +00:00 c2800nm-adventerprisek9-mz.124-8d.bin
13    59374168 Mar 5 2012 12:49:22 +00:00 c2800nm-adventerprisek9-mz.124-24.T.bin
151076864 bytes available (105431040 bytes used)
I try to make it load c2800nm-adventerprisek9-mz.124-24.T.bin
[Code] ...........
I did
verif flash:c2800nm-adventerprisek9-mz.124-24.T.binit is ok
is it corrupted memory? how to fix it?and aslo with System image file is "flash:c2800nm-adventerprisek9-mz.124-8d.bin"it dos not show voice ports for WIC2-FXO in runn conf

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Cisco Switching/Routing :: Select Network Module For 2811 Router?

Aug 7, 2012

how we can select a network module for 2811 router?gigabit or ethernet Hwic?

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Cisco Switching/Routing :: Slow Upload Speed Behind 2811 Router?

Mar 10, 2013

I have working internet behind cisco 2811 on all vlans however upload speed is very slow and ftp server download is slow and times out, previously when directly connected to modem/router was fine? This is router config below: 
Current configuration : 2229 bytes
! Last configuration change at 02:21:18 UTC Tue Mar 12 2013
version 15.1
service timestamps debug datetime msec
service timestamps log datetime msec


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Cisco Switching/Routing :: Flapping Between Router (2811) And Switch (2960)

Jul 23, 2012

we have cisco 2960 switch which is connected to a cisco 2811 router. flapping issue between these two devices??
The following actions i have taken, but no result.. I have changed cables. have set speed to 100 and duplex full on both the interfaces but the interfaces are showing up up still not getting connectivity. same i have to auto on both sides still no result what configurations should i set to resolve this issue...?

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Cisco Switching/Routing :: Router 2811 Joining All Multicast Groups?

Oct 31, 2012

I have a switch 2960 with 15 multicast groups (for video) and now I am configuring a router 2811 to send two multicast groups to another network.But despite of there is no client sending join yet, the router is joinning in all multicast group, and because of that the router are not standing all the traffic. why the router is joinning in all multicast groups?How could I choose what groups router will join?
Router Config:
ip multicast routing
ip pim bidir-enable 
interface f0/0
description Conected to Multicast Source Network
ip address
ip pim sparse-dense-mode

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Cisco Switching/Routing :: Router Upgrade 2811 To Latest Version

Aug 22, 2012

I upgraded a 2811 router to the latest version and apparently everything went smooth.   I reloaded and did a sh ver the IOS show the correct version, but the boot strap shows the old IOS.  How can I change the boot strap to show the new IOS.

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Cisco Switching/Routing :: Nexus 5548UP Connectivity With Router 2811

Aug 15, 2012

In the existing network we have Cisco 2811 router connected to Corporate MPLS cloud. Cisco 2811 is connected to Catalyst 6509 switch(set based IOS with MSFC card). Along with that we have two Catalyst 5509. We are upgrading the access layer by replacing catalyst switches with Nexus 5548 & 2248.
For a purpose of testing I have connected 5548 & 2248. Created cPC and ether channels between two. SVI and HSRP configuredon 5548. I am terminating 2651 (test router) on 2248 port 101/1/1. On 5548 I have enabled EIGRP on vlans. I am unable to ping to 2651 from nexus switch 5548 and vice-versa. I can see both devices on CDP but I do not see eigrp neighborship formed.
What configuration should go in 2248 and 2651 in order to establish a connection between two? If test is successful then I will connect 2811 to 2248 during actual migration. I assume that in testing if it works for 2651 then it must work on 2811 router.

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Cisco Switching/Routing :: Router On A Stick 2811 With 3750 - Not Propagating VLANs

Jun 1, 2012

I am trying to configure router on a stick with 2811 and 3750, but I just cannot get it to work - vlans are not getting propagated from 3750 to 2811: 3750:

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Cisco Switching/Routing :: Bandwidth Limit On 2811 Router Fastethernet Interfaces?

Mar 23, 2013

I have a task of setting up bandwidth limit on the 2811 router Fastethernet interfaces.The scenario is:We have a 4MB Internet connection and would like to allocate bandwidth usage to users.
Fastethernet 0/0 needs to be set with 256KB output and 2048 input. This is going to be connected to a wireless router. Fastethernet 0/1 needs to be configured with 2048 output.I could also use SDM if that's easier than using CLI.

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Cisco Switching/Routing :: Configure Router 2811 For Data And Voice Network

May 24, 2012

I have to configure router 2811 for Data and Voice network.However I have only one Fast Ethernet interface. [code]
what else do I need to configure on switchport on which Avaya phones are connected.And is there any extra command, i need to configure on the router and 2950 switch.

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Cisco Switching/Routing :: Procedure To Change Flash (64MB To 256MB) On 2811 Router

Sep 12, 2012

I need to upgrade the IOS and therefore change the flashcard on a router 2811.
What is the procedure to change the flash (64MB to 256MB) on a 2811 router?

I can remove the flashcard when the router has already started, change the flashcard and load the new IOS?

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Cisco Switching/Routing :: Nx 5548UP After Reboot Log Shows Vpc Down

May 23, 2013

We have a Nx5548up pair connected to FI6248 via a vPC. We had to reboot a FI (in order to configure more FC ports) ; following that reboot, we meet many issues.The first log shows the vPC down showing the FI rebbot.2013 May 23 12:31:45 sw-n5kup-fr-eqx-01 %ETH_PORT_CHANNEL-5 PORT_INDIVIDUAL_DOWN: individual port Ethernet1/2 is down

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Cisco Switching/Routing :: 819 Logs Cleared After Reboot

Apr 16, 2013

I have a remote 3G Cisco router (Cisco 819) that occastionally drops it's EzyVPN and the local guys just reboot the device so when I log on and check the logs it is empty.  My syslog server shows very little, can I keep the logs locally or up the logging to the syslog server?

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Cisco Switching/Routing :: 3560X Crash And Reboot On IOS 15.0(2)SE

Jan 24, 2013

I have 3560X-24T-S switches with IP Services loaded at remote sites that I have been having troubles with.  Originally, they had IOS 12.2(58)SE1 on them.  I have up to four diverse paths via point-to-point microwave at the remote sites.  The Microwave equipment is by Microwave Networks and is a Prodeus M series which Ethernet support.  The original issue manifested itself as hardware loopback errors on some of the ports that were connected to the microwave links.  
My experience in the past has been that when a hardware loopback error occurred it is usually a bad switch port.  In this case however, if I disconnected all of the microwave Ethernet links and rebooted the switch and then connected the Ethernet connections to the microwave links again, everything works fine.  No hardware loopback errors.  That is, until the next switch reboot.  Then the hardware loopback error would return.  Interestingly, it would come back on different ports connected to the microwave links every time.  So if a reboot was done without disconnecting the microwave Ethernet links the hardware loopback error would change from one microwave link to another after each reboot.
I then went through and read the lengthy release notes for IOS version 15.0(2)SE and found several fixes that I thought could fix my issue.  So I downloaded it and updated a couple of the offending switches (not all of them were having this problem).  After going through the second update required to resolve the 'open file error' that happens going between 12.2(58)SE1 and 15.0(2)SE the problem seemed to be resolved on the offending switches.  So, I went ahead and updated the IOS on all of the switches with point-to-point microwave connections.
I now have one switch that was updated that is crashing and rebooting continuously when the Ethernet links for the point-to-point microwave are connected.  Again, if I disconnect all the microwave links and reboot, it comes up fine ands stays fine when the microwave links are connected back up.  It will work fine until the next reboot and then the crash and reboot loop starts over again.  Below is a portion of the putty log when the crash occurs:
previous memory block, bp = 0x59BF838,
memorypool type is Processor
data check, ptr = 0x59BF860
========= Dump bp = 0x59BF87C ======================
  59BF77C:        0        0        0 FD0110DF AB1234CD FFFE0000       56  383FDB4
59BF79C:  212AC68  59BF838  59BF6F4 80000042        1        0  A504F53 543A2050
59BF7BC: 6F727441 53494320 506F7274 204C6F6F 70626163 6B205465 73747320 3A20456E


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Cisco Switching/Routing :: 6509 Goes In ROMmon On Reboot

Jul 24, 2011

I am facing a problem with a cisco 6509 that goes into rommon every time i restart. If i give the command
rommon 1> boot
it will pick up the IOS on the sup-bootdisk: or bootdisk: and boots up but i dont understand why on reboot it wont pick up this IOS and boot itself and why do i have to write boot command everytime on rommon.
I have also explicitly given the command "boot system bootdisk:IOSNAME.bin" in the startup config file but still no luck.

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Cisco Switching/Routing :: 6513 - Switch To SP Mode After Reboot

Mar 20, 2013

Need your expert input in sorting out the below problem.I have a cisco 6513 switch which is going into SP mode after a reboot whci i have done during BCP activity in my organization.Below are the log for your reference.

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Cisco Switching/Routing :: 6504 / Supervisor 720-3b Reboot Loop?

Apr 14, 2007

We recently wanted to swap our existing WS-SUP720-base with a WS-SUP720-3B in a 6513 chassis.Had the existing configuration config saved in a txt file and replaced the supervisor. Booting went fine and we pasted in the original config. There was one failure message about unnsupported command but didnt take further notice."boot system flash sup-bootflash:" was probaly the line that the 720-3B didnt support.After wr mem and reload it went in continious loop and rebooting due to inncorrect boot device. Had to put back the old supervisor and have now the 720-3B in a 6504 chassis. Tried some commands in rommon, but are not getting any further.

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Cisco Switching/Routing :: 6500 - Reboot With Crash Info

Oct 25, 2012

Our 6500 was reboot by self with crash info and i found it was happened by CPU HOG. The log is below for CPU HOG and you can see many times from attached crash info file.
%SYS-SP-3-CPUHOG: Task is running for (16000)m secs, more than (2000)m secs (15/12),process = RPC pagp_switch_mp2sp.
I think this process made high CPU & memory issue and then there were internal communication fail.. isn't it? So i need to know what PRC pagp_switch_mp2sp is to prevent next issue.

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