Cisco WAN :: 3825 Upgrade To 12.4(24).t6?

Sep 19, 2011

I am trying to upgrade the IOS on cisco 3825 from 124-9.T1.bin to 124.24.t6.bin, after I upload the configuration to the CF  and verify the file, everything appears fine but when I try to load the new image it fails with following error and falls back to old image :- 
 
System Bootstrap, version 12.3(11r)T2, RELEASE SOFTWARE (fc1)

Readonly ROMMON intializedboot: cannot open "flash:"
an alternate boot helper program is not specified
(monitor variable "BOOTLDR" is not set)
and unable to determine first file in bootflash
loadprog: error - on file open
boot: cannot load "c3825-advsecurityk9-mz.124-24.T6.bin"
 
Then after few minutes it boot to the Old 12(4).9 ios again.

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Cisco WAN :: 3825 Router - RAM Upgrade To 1 GB

Nov 6, 2012

We need to upgrade the RAM on our 3825 Cisco Router. Currently, it's 512MB and we want to upgrade it to 1GB. So do I just order another 512MB DRAM Memory? What is the part number that I need to order?
 
Here is the show ver:
 
Cisco IOS Software, 3800 Software (C3825-ADVENTERPRISEK9-M), Version 12.4(24)T2, RELEASE SOFTWARE (fc2)
Technical Support: [URL]
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Mon 19-Oct-09 21:05 by prod_rel_team(code)

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Cisco 3825 Killing The CPU

Mar 6, 2012

The process is IP Input and I'm not really sure how to troubleshoot it. I've read through all the doc's on high cpu load if I shutdown the port that feeds that network, CPU drops to around 30%, bring it back up and it jumps up to 90%+. I've got a policy map on the interface shaping the traffic
[code]...

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Apr 10, 2011

What are the prerequisites before doing this?  I have to upgrade a router this Wednesday evening if there is an opportunity to move it to a code that is more current that the one the client is currently running which is 12.4(25b).  I see on the Cisco Support site that after this code, everything moves to 15.

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Cisco :: Rate Limiting On 3825?

Feb 24, 2011

I have a 3825 with a 16 port etherswitch card installed that I'm trying to setup rate-limits on. Interface G0/0 is the connection to the outside world and int g0/1 has a couple of 2950 switches attached to it.

The etherswitch card, f1/0, f1,1 etc has corresponding vlans, 902, 903 etc each with an IP 10.110.1.x, 10.110.2.x and all part of access-group 111. The switches connect on sub-interfaces g0/1.101, g0/1.102 etc and have IP's 10.55.1.x, 10.55.2.x and part of access-group 101.

What i'm trying to achieve is that every port / IP that is on access-group 111 shares 3Mb of bandwidth in/out and access-group 101 shares a separate 3Mb of bandwidth in/out.

I've created two access-lists as follows;

access-list 101 permit ip 10.55.0.0 0.0.255.255 any
access-list 111 permit ip 10.110.0.0 0.0.255.255 any

And on int g0/0 I've created the following rate-limits;

rate-limit input access-group 101 3072000 64000 64000 conform-action transmit exceed-action drop
rate-limit input access-group 111 3072000 64000 64000 conform-action transmit exceed-action drop
rate-limit output access-group 101 3072000 64000 64000 conform-action transmit exceed-action drop
rate-limit output access-group 111 3072000 64000 64000 conform-action transmit exceed-action drop

Now instead of both access-groups having 3Mb each they all seem to be sharing 3Mb! I've tried class-maps and policy-maps but to no avail..

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Nov 11, 2011

LAN subnet conflicts with WAN subnet. My router is d-link 825 and my cable modem is Cisco EPC-3825. Op system is W7. Everything worked great with an older cable modem (Cisco 3000).

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Jan 23, 2011

I want to know the number of routes supported by CISCO3825-HSEC/K9(512MB DRAM).

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May 5, 2011

Is there any way  to configure 3825 to ensure that all packets have a source IP address  that matches the correct source interface (similar to ASA's 'ip verify reverse-path interface')? Currently, we manage anti spoofing with a bunch of ACLs, however I'm looking for a more manageable solution.

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Jun 26, 2012

I want to configure PAT on the router I have no configuration yet

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Cisco WAN :: Downloading 3825 Security IOS

May 16, 2011

am downloading 3825 security IOS there are two IOS of advance security, am confused what’s the difference in both Advance Security Image
 
ADVANCED SECURITYc3825-advsecurityk9-mz.124-15.T7.bin.ASK9-ASK9 FEAT SET FACTORY UPG FOR BUNDLESc3825-advsecurityk9-mz.124-15.T7.bin

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Jul 4, 2012

This is a multi site network. Site A has a Cisco 3825 router and connects to 3 other sites over ISP A and 2 other sites over ISP B. Both ISP A & B provide a layer 2 full mesh network. ISP A provides a 100mb pipe while ISP B provides a 20mb pipe.
 
File transfers (Windows - CIFS) over ISP A's fiber are fast enough and throughput is good. However, file transfers (Windows - CIFS) over ISP B's fiber are slow, even though latency is good. On the 100MB ISP A pipe, file transfer speeds up to 6 M Bps are achieved. On the ISP B 20MB pipe, speeds up to 300KBps are seen for file transfers.
 
ISP A connects to an on board gig port on the 3825. ISP B connects to a fast ethernet port on an HWIC-2FE card on the same 3825. Both ports then connect to ISP Switches and then full meshed to remote site Cisco routers. What could be the issue? Why am I facing these issues only with ISP B even though the configs for ISP A and ISP B are the same?

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Cisco WAN :: NAT And Memory To Tackle With 3825

Dec 16, 2011

we have some unusual  issue when our core 3825 series router dealing  with NAT !first off to offload traffic we have two router one 3825 and other 2821 configured to support GLBP .

interface GigabitEthernet0/0
ip address a.b.c.d 255.255.255.0
ip nat outside
ip virtual-reassembly
[Code]....
 
The problem is router hangs out , intenet users suffer slowness , criticle service like telnet doesnt work . the only solution i found is a reload ,not to mention this is core router sitting on campus network edge . and servicing around 1000 users !! approx assuming all users have using internet at same time .
 
how to check , if memory is not sufficient ?further if any users using utorrent or any thing like that , does it make enormous no of connections form same pc ?

is their any  licence requird for IOS IPS ?i prefer to turn this feature on to kill torrents connections ?  but i fear crashing  of router as no of users are huge !any know bug with glbp , nat with ip voice image  C3825-IPVOICE-M  VERSION 12.4(24) T4  ???

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Jan 5, 2012

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Feb 6, 2011

I have a 3825 with a 1Gb fiber card at one of my sites.  Our ISP and MPLS provider hand off a single gigabit fiber to us that contains 2 50MB EVC's.I need to apply QoS to one of the EVC's and shape them both to 50Mb to avoid upstream rate mismatch bottlenecks.  Both of the EVC's generally only push 10Mb during business hours.When I run UDP stream tests (various rates from 500k-6m that are marked as AF41) to one of my other sites I am consistently getting about 2% packet loss, despite the fact the circuit isn't even close to 50% saturation.  When I remove Shaping and QoS all together, the issue nearly clears itself up, except during peak hours and I get small bursts of packet loss, which is still unacceptable.When the pipe is at near zero utilization (after hours) there also is no packet loss with or with out the shaping/qos applied.

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Cisco WAN :: Replace Our 3825 Screening Router

Mar 25, 2012

We use a 3825 router to screen alot of the junk from the internet side or our firewall. Its worked well for the last 4 years buthas rebooted multiple times in the last month for no apparent reason.At this point I think  I would prefer to replace it.Our current internet link is 100Mbps and this router handles that quite well. Is there an equivalent that I should replace it with, or should I just buy another 3825 ?One with an OOB management port would be nice.

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Nov 13, 2011

I have a remote customer who is having issues with their 3825 router - since I can't be on site troubleshooting is difficult but so far all that seems to happen when the device is powered on is the "SYS PWR" light goes solid green, and no other lights come on.  Fans seem to be operating normally.  Console access doesn't appear to be working.

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Jul 10, 2011

I have a 3825 configured as an EZVPN server with 881 routers as clients.  One issue I am seeing is that sessions don't seem to time out, such as when a peer's public IP changes.  Show crypto ISAKMP peer shows the same host (using device certificates for authentication) with multiple public IPs establishing sessions.  I have ISAKMP keepalives configured on the router. 

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Mar 8, 2011

I want to configure HSRP between two different series routers. In my case the router are 3825 and 3925.

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Apr 17, 2011

I have a NMWLC6 module connected to a  3825 ISR using 1140N APs.  Latest (but one) code.  I had two SSIDs configured and deployed in the default AP group.  Last week I needed to deploy a third SSID for unencrypted webauth, I created the interface and WLAN associated with the interface and the sub interface/svi on the WLAN-controller 0/1 with dot1q.  All created with no problem and enabled, however the SSID was not available to clients and did not show up as available WLANs under AP groups menu. Out of desperation I created a new AP group and added an AP to it and hey presto all three WLANs were available and the third is now visible to clients! Is this normal behaviour? Is the default AP group limited to two SSIDs? (a quick google failed to find any documented limitation!) or is something weird going on?

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Dec 4, 2012

How to configure T3/E3 Interface on Cisco 3825. It got 2 Co Ax Ports (1 for Tx, 1 for Rx). I enabled the port using below command. card type t3 2
 
Later I configured below commands
 
interface s2/0
description dfgsg
ip address 10.123.23.2 255.255.255.252

[Code]....

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Jun 5, 2011

Is there any fiber module card for Cisco 3825 I can use in addition to the built in SFP port?

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Jun 15, 2011

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[code]....

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Dec 22, 2010

I need to understand security bundles. I purchased a Cisco Security Bundle, Advanced Security, 64F/256D. part number CISCO3825-SEC/K9. My expectation from this device was that I will get an IOS based firewall with no need for an additional firewall module. however, the supplier is telling me that I have to buy a firewall module to use the feature. Isn't the bundle supposed to come with all I needed since is a bundle?
 
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I am having Cisco 3835 with 2 builtin Gig ports , now We need to add two more Gig ports additionally , which Ethernet module would be recommended (model) ?

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Jul 17, 2012

I have a cisco 3825 router with two GE interfaces. GE0/0 is connected to a switch through ethernet cable. I have configured the GE0/0 interface with IP address. I have also configured static route for the local network. However, now I can only ping the GE0/0's own IP from the router. Here are the running-config:
 
hostname Router
!
boot-start-marker
boot-end-marker
!
!card type command needed for slot 2
enable secret 5 $1$4gxa$sykc0mcaxpCIrGc86i1ZE.

[code]...
 
The 10.1.52.1 is the current gateway on the 10.1.52.x LAN.

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May 19, 2013

We have the below. Does this support Voice commands ? Or do we need a change of the router itself ? Or any licensing ?  
C3825-ADVENTERPRISEK9-M, Version 12.4(24)T8

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Jun 27, 2012

I have cisco 3825 router with two interface one with public ip 182.50.190.140 and the other with private ip 192.168.1.1 and the DNS is 66.28.0.45, I configured NAT overload on it to access internet I can ping public ip nad default gateway but cannot ping dns and neither internet can be accesed. following are the configurations. [code]

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Aug 4, 2012

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Apr 16, 2013

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Mar 13, 2011

I want to configure Reliable static routing with object tracking. I have a cisco 3825 and 3925 router in which the hsrp will be configured . Now these two routers are connected a remote site via three different WAN connectivity as under

1. MPLS
2. LL-1
3. LL-2

The priority of routing is also the same sequence.
 
Now if the MPLS goes down the remote site should be connected via LL-1. If both the MPLS and LL-1 goes down the remote site should be connected via LL-2.
 
The LL-1 is terminated on cisco 3825 and LL-2 is terminated on cisco 3925. MPLS is terminated on both cisco 3825 as well as 3925 router.
 
Whether multiple tracking  options are available so that i can achieve the same. Topology diagram is attached.

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