Cisco WAN :: 2811 With G.SHDSL WIC CPU Running At 99%

Sep 23, 2012

I have a particular site that is causing me trouble, this site is connected in a back to back configuration using 2811 at CO and 2621XM at CPE.  The CO end is also the CO for 3 other sites so has a total of 4 wics installed (WIC-1SHDSL-v2), these other sites also have 2621XMs for the CPE.
The problem i am getting is when one site in particular transfers large files to/from client machines, the CPU on the 2811 jumps to 99%:
CPU utilization for five seconds: 99%/98%; one minute: 26%;
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 11    12881868  37249378        345  0.49%  0.50%  0.51%   0 ARP Input
 54     8548592  30375358        281  0.40%  0.45%  0.41%   0 XDSL BACKGROUND


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Cisco WAN :: 2811 And A WiC-1ADSL-I-DG / How To Get Card Up And Running

Jul 22, 2007

We have open a division in the UK and are using DSL as a back up to a T1-E1, so I was going to use a standard DSL Modem but thought the WiC-1ADSL-I-DG would be better. However I can seem to get the card up and running. Here is the interface config and sh int atm.

 interface ATM0/1/0
ip address dhcp
ip access-group 102 in
ip inspect SDM_LOW out
That's part of the sh int amt.

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Cisco Firewall :: 2811 Running Advance Enterprise V 15.1-2

Jan 7, 2012

I have a Cisco 2811 running Advance Enterprise v 15.1-2.  I've just configured it using ccp for internet access (on 2 lines) and a firewall.  The configuration is pretty much all default and I used the ccp wizard to create a 'medium-secure' firewall. I have 2 blocks of public IP addresses for my internal network and for the DMZ.  The 2800 is configured as follows:
- 2 x default routes. one to each dialer.

- 6 zone pairs as follows:
  - ccp-zp-self-out (seems to mostly work... I can ping any IP address from a console but not a hostname)
  - ccp-zp-in-out (works fine, both interfaces seem to be in use)
  - ccp-zp-in-dmz
    - which by default set to ccp-permit-dmzservice
    - which inspects ccp-dmz-traffic
    - which matches group dmz_traffic and has a class map dmz-traffic

- cnc-zp-dmz-out which is set to ccp-inspect. (my own zone pair to allow systems in the DMZ zone to see the internet.  This works fine.)

- ccp-zp-out-dmz (works fine.  I can see my web server from any system outside my own network)

 - ccp-zp-out-self (which, I guess allows anything permitted to get to the 2811)
Internet works from within the DMZ and in-zone.  The outside can access my dmz servers.  The inside can access most things on the outside using the firewall rules.
1) Although I have the zones set up to allow the same access from in->dmz as I do from out->dmz and out->dmz seems to work, I cannot seem to access anything in the dmz from the inside.
2) When setting up the firewall I ticked the box for 'allow PPTP clients to make connections from the inside' (or something like that).  I cannot seem to make a PPTP connection from my workstation.
I have scoured the internet for guides, looked through these forums & the cisco configuration guides and experimented all day but still cannot figure this out.Do I need a special route between the inside and dmz?  I have seem references to static routes on ASA firewalls but the command 'static (inside,dmz)...' does not work on a 2800 series router.

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Jan 17, 2013

I have two Cisco 888-K9 setup on a 4 wire private line about 2-3 km apart one configurated as CO and the other as a CPE. During config and testing the SHDSL connection was completely stable although this was only over about 300m of CAT5e. Now the devices are installed the in field I'm finding the connection constantly comes up and down every minute or so which leads me to suspect noise or line quality is the issue. How to debug this and tweak the setting to improve stability? Config from the CO & CPE attached along with DSL controller output from active and non active connection on the CO.

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Cisco WAN :: 2811 - Startup Config Is Not Copying To Running Config

Nov 15, 2009

I have a Cisco 2811 router and when I turn of the router the running config is lost. I have to the following to get the router running of the start-up config settings.

router#copy start-up running-config

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Apr 10, 2013

I do have a question, is WIC-1SHDSL-V3 able to support ADSL line?
We have WIC-1SHDSL-V3 module used for SDSL line, due to few site need to bring up with ADSL line with 1841 model, but HWIC-1ADSL module already EOS. The replacement model EHWIC-VA-DSL-A is not compatible to 1841. My architect suggest Symmetric Module like WIC-1SHDSL-V3 could be able to tweak the config to support Asymmetric purpose. I did google but do not found such related topic. Can any expert on this area to advice me?

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Apr 7, 2013

I searched a lot but couldnt find a clear document about connecting 2 G.SHDSL routers back to back.First of all I am not sure which type of cable (RJ11) is used for connecting two 878 routers. Does it have to be cross or straight cable.
Which RJ11 pairs will be connected each other [code]
According the configuration samples One router must be CPE and the other must be CO for simulating DSLAM.

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Dec 15, 2011

I'm having some trouble getting two Cisco 888's to work correctly back to back.. The two routers will ultimately be used in conjunction with a BT EPS8 circuit which is effectively four wires short distance between customer sites. We have configured lots of these using the older Cisco 878's.
Anyway, as i've been struggling to get line sync on site I've gone back to basics and connected the two 888's back to back. However, I've found that no matter what I do I can only get the routers to sync at 384kbps!? And that's with a one meter RJ11-RJ11 cable.. Very strange. When we've used the 878's we get much more bandwidth. I have tried statically assigning the line rate at both ends but it still only works at 384kbps.

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Jun 11, 2013

I have 30 switched in my corporate network it’s all up and running all switches running by default configuration and connected to WS-C4506 core switch our dhcp server pooling network. Now we need to configure new Vlan for finance department this department has more than 200 users. If my server distributes range ip can vlan2 automatically assign ip 200.0 addresses to finance department.All switches running default config no ip address assigned.

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May 7, 2013

I need to replace an existing ASA 5540 with a new ASA 5525X. I would like to pre-stage and configure the new box with the existing config, migrate license and export certificate files before swapping it with the old one during a change window. The new firewall will run 9.1 on deployment. Now the same 7.2(4) cannot just be copied over to 5525X running the minimum 8.6 version. There is a Web based tool available at [URL] according to Cisco documentation but the page does not load for me (Cisco intranet only tool ?). Is there another tool for automatic conversion ?

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Sep 19, 2012

My setup is ISP-2811-PIX 515E-LAN. Right now, I am doing a PAT for IPSEC tunnels to terminate on the PIX. Do you recommend I use the 2811 instead of PIX for VPN or keep things the way it is? Trying to determine the best box to use.

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May 27, 2013

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Router(config)# ip sla ?
<1-2147483>   Entry Number
Note this is from my 2951 router.
I need full features like this in my 2811 which IOS should I download.

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Feb 29, 2012

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Why there are two IDs for the same hardware and under which ID will my 2811 routers be classified into inventory database. This information is important since customer want to have support of 2811 in CiscoView of LMS 4.1 (around 200 devices).

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Aug 23, 2012

Looking to implement CoPP in our 2811 ISR. We currently have the base 256mb of DRAM in there. Will this bring our router to its knees? I've priced a RAM upgrade.

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Mar 19, 2012

i have a branch router that connects to mpls WAN.  Also has a second interface that is used for dmvpn failover in case WAN goes down.We want to use this second interface also as the primary internet circuit for the branch.  I changed the default route to the next hop address on the other side of the second interface and expected this to work.But i was told i need to set up NAT for this to work, and set up an ACL for NAT to use. how to set up NAT?

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Nov 2, 2011

I have BGP router 2811. Want to configure BGP on it with two ISPs. How can i configure it?

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Cisco WAN :: 2811 - Configuration Of Router And BGP

Nov 8, 2011

I want to configure BGP but i am finding it very difficult to know BGP as I am new to this concept.
What is theoretical and practical approach to configure bgp??
I have to configure my office router 2811 for two ISPs which will be acting as fail-over.
I have to start it from scratch.

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Cisco VPN :: 2811 / VPN Connects But Can't See Network

Feb 14, 2013

I have a 2811 that I can remotely VPN to using Cisco VPN client however I cannot see the internal admin network ( 
Current configuration : 4845 bytes
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption


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Apr 20, 2013

We have a cisco 2811 router with 2 ADSL interfaces. One dialer interface is used for internet and another dialer interface is used for VPN.
The dialer interface that is used for internet purpose is "Dialer 1" and the VPN is "Dialer 2".
The route looks like this: ip route dialer 1
Basically, I am able to the ping the external IP address associated with the Dialer 1 interface, however, I cannot ping the external IP address associated with Dialer 2.

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Cisco WAN :: 2811 NAT Anything Heading Out Of WAN Port

Mar 22, 2012

I have a Cisco 2811 with an additional HWIC-4ESW card. [code] I need to NAT anything heading out of the WAN port. [code] I can ping anything connected to my other private networks from my network but nothing on the Internet. [code]

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Jan 3, 2012

I just bought an additional router for my network and I'm in the process of setting it up.I have however hit a snag with enabling ssh on the device. It is a cisco router 2811 running IOS 15.0 (refer below to my attempts)

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Cisco WAN :: IOS Image Download 2811?

Sep 4, 2011

I want the below mentioned IOS image for backup purpose. But I am not finding it in or anywhere in the in internet. where can I get this version of image other than my router.

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Cisco WAN :: Configuring ASA5510 With 2811 ISR

May 26, 2012

I have a 2811 ISR configured to provide the following services to my network: Internet access to LAN usersCisco Call Manager ExpressSite-to-stie VPN to 3rd party networksVPN server to provide VPN access to remote usersSecurity Zone configurationsStatic NAT configurations.Now I recently just got the ASA5510 device and I am not sure how to go about with the setup, whether to put the ASA in between the internet and the ISR (Internet - ASA - ISR - LAN), or put the ISR in between the internet and the ASA (Internet - ISR - ASA - LAN)? While i know I can move most of the config unto the ASA, i know that the CME cannot be moved, hence I would like to do the setup such that users on the network still have access to CME.

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Cisco :: Setup NTP Server Using 2811?

Sep 30, 2012

I've setup a NTP service by using Cisco 2811 routers. This works fine at the moment, but in the end there are some questions left.
1. I'm using two 2811 Routers, one for primary, which is resceiving the time from PUBLIC NTP 1, and one for backup, which is resceiving the time from PUBLIC NTP 2. Is it possible to compare these to times an check if the match? And if not, generate an alarm via e.g. SNMP
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Cisco WAN :: 2811 / Securing Ports In Nat?

Mar 22, 2012

I have a site that is connected to the internet via T1 into 2811 runing C2800NM-ADVENTERPRISEK9-M), Version 12.4(11)X.  I have noticed that when i do a port scan on the outside nat pool i see well know ports in the closed state .ie...7,21,22,23,25,99,100,80,443.   These pools for end users to access internet.   Does this pose a security risk? What can i change to provide end user access to web but not let these well know ports open?

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Cisco WAN :: 2811 DSL Load Balancing

Dec 9, 2010

I have a Cisco 2811 router with two HWIC-ADSL cards configured for dsl connection. I have two lines from the same ISP and i am load balancing between them. I have created a couple of SLA's to check the state of the connections and add to the routing table the two default routes if both are up or any one of them is up.My problem is that when i  try to download big files (especially antivirus updates) the download at some point stops (especially the antivirus exits with an error of unreachability). If i shut down one line everything works fine.Could i use something (configuration-wise) to prevent this problem from happening?????Is there any way i can combine the two lines? They are simple ADSL connctions with static ip's.

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Cisco VPN :: Create A VPN Between 2 Host With 2811 And NAT?

Jan 12, 2012

I want to create a VPN between two PC's, (the server "Data" and "Remote Desktop" check the topology below), the Router Clabeck (cisco 2811 ) is connected to the internet through int f0/0 using a PPPoE connection and connects all the LAN PC's by PAT to the internet (you can see all the configurations in the Show Run below), the "Remote Desktop" is any PC with internet connection. 
F0/1                         F0/0
DATA--------------------SW-------------------ROUTER(Cisco 2811)---------------------INTERNET---------------REMOTE DESKTOP                                                                       
Current configuration : 2116 bytes
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec


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Cisco Firewall :: 2811 ZBF URL Filtering

Apr 18, 2012

I try to implement the url filtering feature on a cisco 2811 router and whenever i enable the parameter map patterns the router retuns (after some time)

%Unable to compile obj regex.[code] The result is that the router blocks ALL webpages without giving a block page message.

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Jul 6, 2011

I am currently configuring a  number of cisco 2811 routers that require the BGP exterior routing  protocol, however the IOS version (12.4) currently installed does not  support the bgp protocol.After entering the commands into the cisco CLI 'protocol not in this image' is returned.

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Jun 14, 2012

how many extra interface port can be plugged in to the 2811 router ,there are 2 fixed FE port on this router and i have 3 connection i.e one mpls link , one internet link  and one sip trunk .. some body confirm me  that i can insert module in 2811 ?

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Cisco WAN :: 2811 High Cpu Utilization

Apr 29, 2013

I have a 2811 that is really hitting the CPU hard.  Nothing shows on CPU processes.  It has an IPsec VPN tunnel back to HQ which also has a 2811 that terminates the VPN.  The HQ has 2-3 IPsec tunnels to other remote sites.  The CPU at the HQ avg 50% utilization during business hrs, peaks at about 80%.  The remote one is very high 95% peaks, avg 80%-95% during business hours with bandwidth utilization of only 10-20Mbps.  I read somewhere that its possible that fragmentation could be causing this.  My question is, if I set the MTU to 1450 on the remote, I am guessing I will need to do all the other routers as well, the HQ and other remote sites?  Siince they use the same outside interface to my HQ, is that correct?

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Aug 22, 2012

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Jun 23, 2011

We have Cisco 2811 router and facing high CPU utilisation as 70%/67%;,IOS Runing :c2800nm-advsecurityk9-mz.124-3f.bin.

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