Cisco Switching/Routing :: 2FE-2W Compatible With 2821?

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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Cisco Switching/Routing :: X2-10GB-SR Compatible With GLC-SX-MM?

Apr 9, 2013

one side Catalyst 6500 module with X2-10GB-SR= otherside WS-C2960S-48FPD-L.
 
is both end compatible with each other.

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Cisco Switching/Routing :: SRP541 Is Compatible With SDM?

Jul 19, 2012

I am trying to build a site-to-site VPN between cisco 1811W on a main office and SRP541W on a remote office.I already have the configuration for the 1811W through SMD, but can't install the SDM on the SRP541W.Does the SRP541 is compatible with SDM; and if not is there any other GUI to configure a VPN tunnel on SRP541.

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Cisco Switching/Routing :: 2821 Periodically Stops Routing All Traffic

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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Cisco Switching/Routing :: 2821 Multicast Routing Relay Basic

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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Cisco Switching/Routing :: 2821 Inter-Vlan Routing And IP NAT To ISP?

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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Cisco Switching/Routing :: X2-10GB-SR Compatible With 3750-E?

Jan 31, 2012

i will be buying 2 x 3750-E and will connect our server with 10G to the x2 port of 3750.  is X2-10gb-SR compatible with this? do i need any converter module?

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Cisco Switching/Routing :: 2821 - Routing With Public LAN IP

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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Cisco Switching/Routing :: 2821 With 16-ESW CEF Low Memory

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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Cisco Switching/Routing :: Is HWIC-2T Compatible With 2800 Routers

Oct 17, 2012

Just need to verify if HWIC-2T is compatible with the Cisco2800 routers?

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Cisco Switching/Routing :: Are WS-X6148-GE-TX / WS-X6148A-GE-TX Compatible With WS-X6K-SUP1A-2GE

Mar 17, 2013

Are the WS-X6148-GE-TX and WS-X6148A-GE-TX compatible with WS-X6K-SUP1A-2GE and Sub-Model WS-F6020A?

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Cisco Switching/Routing :: Which WIC Or NM Ethernet Card Compatible With 2620

Jan 10, 2012

Which WIC or NM Ethernet card is compatible with a 2620, (non XM)  router?  I have seen conflicting information on compatibility.  I am wanting to connect this router via an Ethernet Port with a non Cisco router that is connected to my ISP.

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Cisco Switching/Routing :: Interconnect Between 2821 And HP 5412zl?

Jan 27, 2012

I  have a 5412zl 10.215.x.x/16 Most of the connections on this switch are  on vlan1. B9 is the port which is connected to a Cisco 2821 Router. The  port on that end is GE0/1. The port on the cisco side is not a trunk but  configure with an ip of 10.215.1.30/24 Its part of a some ip  access group. The network that i now sit on is a 172.x.x.x/24 (behind  cisco router, about 3 hops to that main 2821)We current  have a system on my side that talks to a server on the 10.215. that has  no issues. I'm trying to access some switches on the 10.215. and have  had no luck reaching them.
 
Here is the access list that i found that port is configured to use:

permit ip 10.215.0.0 0.0.255.255 172.18.0.0 0.0.255.255 permit ip 10.254.0.0 0.0.255.255 172.18.0.0 0.0.255.255 permit ip 10.215.0.0 0.0.255.255 172.14.0.0 0.0.255.255 permit ip 10.254.0.0 0.0.255.255 172.14.0.0 0.0.255.255 permit ip 10.215.0.0 0.0.255.255 192.168.2.0 0.0.0.255 permit ip 10.254.0.0 0.0.255.255 192.168.2.0 0.0.0.255 permit ip 10.215.0.0 0.0.255.255 192.168.20.0 0.0.0.255 permit ip 10.254.0.0 0.0.255.255 192.168.20.0 0.0.0.255 I  would think the first permit would allow me to get through to the  10.215 side but maybe i need to set something up on the hp size to let  it know how to get back? I'm very new to this stuff.

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Cisco Switching/Routing :: 2821 Forwarding Udp Broadcast

Jul 31, 2012

I have 2821 router configured with two subinterfaces. This router is connected on cisco 2960 switch. The trunk on 2960 is configured without any prunning of vlans. I noticed that udp broadcast traffic is being forwarded through my router on native vlan 1 (this interaface do not have ip address configured). Below is configuration:
 
Router:
 
interface GigabitEthernet0/0
no ip address
duplex auto

[Code]....

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Cisco Switching/Routing :: Failover VPN With 2821 And ASA 5510

Jul 2, 2012

Currently I have a network that looks like this:
 
ASA5510 - - - Internet - - - ASA5510
     |                                             |
EIGRP                                 EIGRP
     |                                              |
2821 -----------MPLS----------1841
                         BGP
 
The MPLS connection is currently down, I'm trying to run a failover Site-to-Site VPN over the internet. All of the examples I've read have both connections involved in the failover coming out of one device. Since I'm not working that way, what is going to be the best way to failover? Do I need to set up some sort of IP SLA in the config? Or can I somehow weight routes in EIGRP in a way that the connection will failover from Internet to MPLS when the MPLS goes down and vice versa when the MPLS connection comes back up?

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Cisco Switching/Routing :: What Is The Maximum Nr Of VPN Clients On 2821

Mar 10, 2013

What is the maximum VPN Clients that could be connected to cisco router 2821, with this IOS c2800nm-adventerprisek9-mz.124-20.T.bin

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Cisco Switching/Routing :: 2821 Bogus Arp Table Contents

Jul 23, 2012

My 2821 router has an arp table with the wrong ip to Mac mappings.  The impact is that I can reach any host in the 10.1.1.1 subnet.   I can reach hosts in the 192.168.35.0 just fine. [code] It is as if the 192.168.35.1 device is answering all arp requests as a proxy arp or something. Clear arp-cache nor clear ip arp on my 2821 have any affect. 

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Cisco Switching/Routing :: Untagged VLAN On Subinterface 2821

Sep 8, 2012

I need to configure a subinterface eg g0/0.1 and g0/0.2 with a untagged VLAN for each subinterface on a Cisco 2821.

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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 :: 2821 Software Forced Crash

May 14, 2012

I have a cisco 2821 router in rommon and displaying the message '' softwre forced crash '' and '' checksum error'' .I tried to do rommon tftpdnld but as the image is self decompressing into the ram it again crashes with the same error although i have done it with various valid ios but in vain.

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Cisco Switching/Routing :: Possible Load Balancing On 2821 Router?

Apr 15, 2012

I have a 2821 Router, with a VWIC2-2MFT card in it, with two T1s going into that card.  The two T1s are a bundled MPLS line.
 
I then have a cable modem connection going into the gigabit Ethernet GE 0/1 port on the router.
 
Right now, the cable modem provides a backup connection in case the T1s go down.
 
What I was wondering is if there was a way to 'combine' the bandwidth from the two T1s with the cable modem?

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Cisco Switching/Routing :: Upgrading Fans On 2821 Router

Apr 3, 2012

Basically I run 3 voice gateways on 2821 routers. In two of my routers I've had fan failures, one router has had two fans die and one has had just the one.
 
I was going to buy the offical Cisco fan replacement kit but then I thought with such as high failure rate I'd rather buy something else and better guarentee the service to my call centres.
 
So, what i'm asking is:
 
- Is there any reason why I cannot procure a standard 80mm 12V fan with a better rating (cooling and reliability) and install this in my 2821's?
 
I understand this may invalidate any warranties but mine have long expired.

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Cisco Switching/Routing :: How To Configure Dual ISP On Router 2821

Mar 17, 2013

I've 3 interfaces on router:

Gb0/0-ISP01 with DHCP client
Gb0/1-ISP02 Static IP 192.168.2.x/24 
Fa0/0 - LAN 192.168.1.1/24
 
I want to know, how to configure:1. Set the IP of interface Gb0/0 as dhcp client from ISP01 and make it as default route.
 
2. How to configure the ip nat.....overload?
 
3. How to use the ip sla to monitor internet connectivity to 8.8.8.8 for ISP01, if it fails, to go to ISP02.

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Cisco Switching/Routing :: 2821 - Router High CPU Utilization?

Sep 25, 2012

We've got Cisco 2821 for our 90mb/s Internet Access. Its CPU usage is around 80%. Show process cpu does not show any cpu proccess with high utilization. But we have got plenty of policing configured for our clients using policy maps. Can this policing affect cpu usage?

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Cisco Switching/Routing :: 2821 High Interface Discards

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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Cisco Switching/Routing :: Netflow Configuration On 2821 Router?

May 5, 2013

I have  customer that we have configured netflow on the 2821 router that their traffic is on.  Currently the company they have contracted with for the analysis is seeing data duplication.  Below is the configuration for the interface and the router
 
Cisco 2821;
 
interface GigabitEthernet0/0
description TVC-FI-Ethernet-Fiber-Ethernet link
ip address 216.255.164.33 255.255.255.248 secondary
ip address 192.168.5.1 255.255.255.0 secondary
ip address 216.255.166.129 255.255.255.128 secondary

[code]....

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Cisco Switching/Routing :: WS-C3560-48PS SFPs Compatible With 2960-S Switches

Jan 3, 2013

I need to replace an older 3560 with a new 2960-S and am wondering if the SX SFPs I already have will be compatible with the 2960-S. [code] I cannot find any way to get the part numbers of the SFPs.

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Cisco Switching/Routing :: 2960 Setup - Compatible Spanning Tree Protocol

Jan 9, 2012

At a college I'm trying to setup a Cisco 2960 to be used on a VLAN 248 tagged on the uplink port that uses Spanning Tree/. Here is the following from the Cisco:
 
show interfaces trunk
 
Port        Mode        Encapsulation  Status        Native v lan
Gi0/1       on               802.1q         trunking       1
 
Port        V lans allowed on trunk
Gi0/1       248
 [code]...
 
On the Alcatel OS6850-48L the following is setup: bridge 1x1 248 priority 3287 Vlan 248 802.1q 5/8 "cisco"
 
I cannot make a change on the Alcatel, I can only administer the Cisco. I was able to get things working fine (as a test) using a Net gear or HP switch instead of the Cisco. However we have a Cisco switches and would not like to have to buy HPs. Is there a compatible spanning tree protocol to use on the Cisco with the way things are configured on the Alcatel. I need to stick to standard RSTP (802.1w) ieee standards and not something Cisco proprietary.

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Cisco Switching/Routing :: 2821 And 3560 Multicast Servers Connection

May 9, 2012

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 ?

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Cisco Switching/Routing :: 2821 - Setting Up Multiple Routes With Failover

Apr 2, 2013

I'm a bit perplexed atm with trying to set up multiple failover routes on a 2821 router.  Let me say that I have more experieince in a switched network as routing is seldom required where I work atm.  Here's my problem. I have a routing table set up as follows but only the primary routes work.  The failover routes will not kick in once the primary route is not there.
 
ip route 10.32.11.0 255.255.255.0 128.32.8.11
ip route 10.32.11.0 255.255.255.0 128.32.24.11 100    
ip route 10.32.12.0 255.255.255.0 128.32.8.12
ip route 10.32.12.0 255.255.255.0 128.32.24.12 100
ip route 10.32.14.0 255.255.255.0 128.32.8.14
ip route 10.32.14.0 255.255.255.0 128.32.24.14 100
 
Ip addresses are not exact but it gets the point across.
 
Why the failover routes are not failing over?  The failover routes work if I remove the primary route from the config.

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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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Cisco Switching/Routing :: 2821 / Segment Shuts Down When Switch Plugged In

Mar 23, 2013

WAN link plugs into a 2821 Router with an switch module in it. About 8 clients are plugged in to the 2821.2821 connects to super cheap netgear switch (I'm 99% sure it's stripping dot1q headers) via one of the ports in the switch module. About 4 people are connected to the netgear.Now, I sent a catalyst 3560g to the branch because they wanted to extend into a new building. Someone decided to run a single cable from the netgear to the 3560. On the 3560, I have about 5 clients and a couple of APs.
 
So it goes  2821 -> Netgear -> 3560. All of these are single connections.When the 3560 gets plugged in, all clients on the netgear lose their connection, and nothing on the 3560 works. It happens almost instantly. I can't figure out why connections are dropping. The APs have about 4 VLANs onn them, and the PCs are on their own VLAN (the native VLAN).

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Cisco Switching/Routing :: Telnet From 6513 On Port 2821 Fails

Jan 21, 2012

I am having issues with 'telnet' on port 2821 to a range of servers connecting through vlan interface from my core switch 6513 running s72033_rp-DVIPSERVICESK9_WAN-VM) version 12.2(33)SXH7, RELEASE SOFTWARE (fc3). The telnet on port 1556 and 13724 is ok.

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