Cisco WAN :: Set Up WAN Interface On Fast Ethernet Interface Of 877 Adsl Router

Apr 9, 2011

Is it possible to set up a WAN interface on a FastEthernet interface of a Cisco 877 Adsl Router ?Due to my ISP, i've to use an external VDSL modem and must connect it to my cisco 877 router (and leave it's adsl interface unused).But i don't know how to set up a wan port, other than the adsl interface itself (dialer0), on my cisco.

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Cisco WAN :: 7200VXR - NPE-G2 Fast-Ethernet Management Interface?

Apr 30, 2012

Is there a keyword that we use under the interface to specify that it is purely management?
We need to assure that the subnet and any node on that subnet is not shared with the default routing table.
how do we set the gateway for the management interface if the node we are sourcing the ssh session from is on a different private subnet?

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Cisco WAN :: Fast Ethernet Interface Being Take Down With Burst Of Traffic 2800

Jan 12, 2011

It is a single router with dual ISPs. It is a 2800 and there is failover configured. I have implemented object tracking and the feature works great except that lately, whenever there is a lot of traffic coming perhaps from the internal users, we start getting intermittent outages.
I have gone deep into looking into this problem and have determined that our ISP#1 does not have any problems. What I think is happening is that whenever the router receives a lot of packets (30-40 users on the internal network) destined to the outside, the router CPU maybe gets too busy and the router then believes that the objects are no longer reachable and it triggers a failover which causes the router to re-direct traffic to the ISP#2. Then, because these are just quick burst of traffic, in the next 30 to 45 seconds after the router re-directed the traffic to ISP#2, the router object tracking engine detects that the objects are now again reachable and this then causes the router to re-direct all traffic back to ISP#1.
This cycle then continues all day on how to prevent this.

Is there a way to perhaps tell the router to completely shut down the interface facing ISP#1 whenever there is a hicup and to keep it shutdown for at least 8 hours? This way I can prevent the router from going crazy.
Or is there a way to perhaps prevent this at the internal (LAN)  interface? Are there some metrics like QoS that I can implement on the internal Fast Ethernet Interface to prevent the burst of traffic from eating up the CPU?

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Cisco Infrastructure :: 3660 - Interface Resets Over Fast Ethernet

Mar 20, 2005

I am troubleshooting interface resets on a 3660 connected to a 3550 over Fast Ethernet. I have hard coded both sides for full duplex and 100Mbit. The 3660 is incrementing interface resetes about 4-6 times a day and the 3550 is clean. I have noticed this in other similar configurations as well.

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Cisco WAN :: 2900 - Bridge From WIC Interface To Ethernet Interface

Apr 22, 2012

Needing to bridge from my wic interface to an ethernet interface on a 2900 series router so that I can pass through the ip address given to the WIC, to my ASA so that I don't have to give my ASA a private range address. (Just like a service provider might do when bringing a T1 with managed router in to my prem)

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Cisco Switching/Routing :: ADSL On Fast Ethernet In 1801?

Apr 24, 2012

I have cisco 1801W . Earlier I am using ADSL dynamic IP address  on RJ 11  through the ADSL Port but now the ISP change the connection to RJ45.
I am trying to configure it but unable to do this. ADSL line is okay because When I am connecting through the ISP router it is working fine. I have connected the ADSL RJ45 cable in the router fast ethernet 0.But I wanted to use Cisco 1801 Router so that I can use the ADSL as primary and ISDN as the backup.
Below is my configuration, eiteher this is possible to configure ADSL through RJ45 in 1801 and what configuration require for this.  
Router#show ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0              unassigned      YES DHCP   up                    up
BRI0                       unassigned      YES unset  administratively down down
BRI0:1                     unassigned      YES unset  administratively down down
BRI0:2                     unassigned      YES unset  administratively down down


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Cisco WAN :: 857 ADSL Possibility To Configure Fast Ethernet Port As WAN Port

Apr 4, 2012

I have a Cisco 857 router which i used for Internet connection with RJ11 connectior (ADSL0 POTS) but now the ISP has changed the internet link with PPOE type and the ONT connection is RJ45 , Is there a possibility to configure one os the Fast Ethernet ports as WAN port for internet.

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Cisco WAN :: 1721 Router With Ethernet Interface Card

Feb 25, 2011

I have cisco 1721 router so I installed an ethernet interface card so when I make show run I found that there is a fast ethernet 0 and ethernet 0 (which I installed) so i wand to make subinfaces of the etheernet 0 but I can't. I tried to make encapsulation dot.1q but it doesn't accept it.
Is Ethernet0 supported to generate subinterfaces?

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Cisco WAN :: 1841 Router - HWIC Interface Card - Cannot See Interface In Configuration File

May 9, 2012

i have a 1841 cisco router and i recently purchased a 1 port HWIC wan interface card. My problem is that I cannot see the interface in my config file. Is there something i am missing?

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Cisco WAN :: Apply QoS LLQ To 1721 ADSL Interface

Apr 17, 2007

I can not apply the LLQ to ADSL ATM interface. the system take the command with out any error message, but no in the show running config. Any Cisco link can explain this? [code]

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Cisco WAN :: Terminate New 10M Link Via Ethernet Interface On 1841 Router?

Dec 19, 2010

We want to terminate new 10M link via Ethernet interface on Cisco 1841 router. We have free Gig port on the router. We also have HWIC-FE module inserted in the router. However, our implementation team said that Cisco 1841 doesn't support 10M link. It is not designed to cater to such high Bandwidth.

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Cisco WAN :: 1841 ADSL Interface Dropping Connection

Jul 2, 2012

We have an ADSL2+ line from a WIC in a 1841, everything has been fine for the last few years and then the last few months the connection going down. When checking the interfaces the ATM0/0/0 is up up and the same for the dialer interface we are using, they are both up/up, but this still needs a reload of the router to be functional again, shutting the interfaces does not bring the connection back up.
I am not an expert on ADSL lines, I have never really had a problem with anything previously. The router was running Netflow to a network monitor wondering if this or logging was causing an issue with entries in the buffer??
Here is an output of show dsl int, would change the firmware, it has been fine all this time before though we are running IOS 12.4(24)T1 advseck9-m, as far as I can seen from our ISP the config for ADSL is all correct. [Code]

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Linksys Wireless Router :: E4200 Freezes And Not Connect In Any Interface Not Ethernet

Sep 23, 2012

My e4200 freezes and not connect in any interface not Ethernet not wireless, i connect reset in any way ( push the reset button, push the reset button an unplug the power.

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VGN-SR490 Missing Eth0 Ethernet Interface In Ubuntu / Can't Connect To Router

Aug 26, 2011

I'm having trouble getting my Ubuntu 10.04 machine (Sony Vaio VGN-SR490) to connect to the Internet by way of an Ethernet cable connected directly to my router.

I'm able to connect to the Internet using this same cable using a Windows machine, way Linux is configured. [code] It looks like the network adapters list is empty. I will now install both Windows XP and Ubuntu Linux dual-boot. I'm still not able to access the internet, even through Windows. I'm wonder if this could be a hardware problem with the computer or a problem with the router itself. Other computers can connect to this same router, and work fine.

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Connect Canon IP6600D Printer (USB 2.0 Interface) To An Ethernet Port On Wireless Router?

Jan 28, 2011

Can I connect my Canon iP6600D printer (USB 2.0 interface) to an Ethernet port on my wireless router so as to end up with a network printer?

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VGN-SR490 / Linux - Missing Eth0 Ethernet Interface In Ubuntu - Can't Connect To Router

May 6, 2012

I'm having trouble getting my Ubuntu 10.04 machine (Sony Vaio VGN-SR490) to connect to the Internet by way of an Ethernet cable connected directly to my router. I'm able to connect to the Internet using this same cable using a Windows machine, so there's something wrong with the way Linux is configured.

Here are my network settings on Linux:

$ ifconfig
lo Link encap:Local Loopback
inet addr: Mask:
inet6 addr: ::1/128 Scope:Host


It looks like the network adapters list is empty. I will now install both Windows XP and Ubuntu Linux dual-boot. I'm still not able to access the internet, even through Windows. I'm wonder if this could be a hardware problem with the computer or a problem with the router itself. Other computers can connect to this same router, and work fine.

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Cisco Routers :: SRP547W - Can't Ping External Side Of ADSL Interface

Mar 2, 2013

I have installed a couple of SRP547W's and can't ping the external side of the ADSL interface.
Is there an option to turn on "respond to ping" and also are you able to forward to a internal IP?

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Cisco WAN :: 1811W Accessing Web Interface On ADSL Modem In Bridged Mode

Nov 8, 2012

Using Cisco 1811W with IOS 15.1(4)M5.  FE0 and FE1 are connected to the internet via Billion ADSL2+ modems operating in bridged mode.  Both lines are similar so I'll only discuss FE0 from this point on.Local subnet is with router on as default gateway.  Modem on FE0 has static LAN IP of and when plugged into the switch on the LAN side, the web interface can be accessed at that IP address.  Unplug the modem from the switch and plug it into FE0 and it now works as desired providing access from the router to the internet but the web interface is no longer accessable at
I tried adding a static route "ip route FastEthernet 0" and also "ip route Dialer 1"  Neither worked and presumably it isn't that straight forward.  Possibly NAT or other routing configuration required.Although there isn't much to configure when in bridged mode, I mostly want this setup so I can look at the ADSL connection status and for the modem to write messages to syslog (works when plugged into switch on LAN side), or SNMP access.

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Cisco Switching/Routing :: 877W ADSL Line Interface Not Initializing?

Jan 19, 2012

Is the ADSL line interface on Cisco 877W not initialising a known issue? This interface on my router has been in this state for more than one month, with the rest of the router seemingly operational. The interface was connected directly to my ADSL broadband and worked well for two years. But then, about a month ago, the interface went down. I saw the exact moment this happened recorded as a syslog message. The only information was that the interface status had changed to down.
Initially I thought this was a matter of reload the router and all will be well. Did not happen. Then I thought my broadband connection was to blame. However, this option was quickly ruled out. So I went on to exhaust all troubleshooting options, including reflashing the router with the saved image and totally changing the configuration. Still no change. I have had to go back to my old BT home hub for internet access. In terms of speed this actually works a lot better than the Cisco router. But I would still rather have the router connected to my broadband line. What can I do to bring the ADSL interface back to life?

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Cisco WAN :: 2911 - Support Interface ADSL Module Like Backup Link?

Apr 27, 2011

i will going to buy a router 2911 but i want know if support a interface ADSL modulo like backup in case that my primary link WAN Ethernet down and up the adsl link with a module HWIC ADSL pots.

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Cisco Routers :: SRP527W Act As L2TP Tunnel Initiator Over ADSL PPPoE Interface

Jan 29, 2013

We are using SRP527 routers with PPPoE ADSL connections. From the SRP527 we create an IPSec tunnel to our core routers (Cisco ASR). We are wanting to change the IPSec tunnels to L2TP, and I need to know if this can be done from the SRP527. I cannot find any L2TP configuration options in the setup options.Can the SRP527W act as an L2TP tunnel initiator over the ADSL PPPoE interface?

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Cisco WAN :: Ethernet Interface On 3560 And 2960?

Nov 12, 2011

3560--------------------------2960 connects via single mode Fiber and now will have another redundant Link between 3560 and 2960 with Ethernet interface ( Wireless). 3560------------trunk config---------2960 < Fiber Link >
what config I need on Ethernet interface on 3560 and 2960?what config is needed to alwayz have fiber as primary connection and Wireless as backup.

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Cisco WAN :: Gigabit Ethernet Loopback Plug For 3845 Router Gigabit Interface

Sep 26, 2012

I have an Ethernet Loopback Plug (4 Pairs) made and trying to test the Gigabit Interface on a 3845 Router with a fail result. The interface will show up/up only if I set the interface to 100M/Full Duplex when I plug-in the Ethernet Loopback Plug (4 Pairs). I don't see this Gigabit Interface @ 3845 router has any option to set it to internal or external loopback.

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Cisco Switching/Routing :: ASA 5505 Cannot Ping From Inside Interface To Outside Interface

May 1, 2012

I have a Cisco ASA 5505 and I have my internal and external interfaces configured but I currently cannot ping from the inside to an IP Address on the outside.  I had this setup and working and I have another set of equirement that I am replacing that is working with my service provider so I know it is a configuration issue.  When I ping for example I get:
Destination host unreachable
Do I need to add a static route from my inside interface to my outside interfaces?   

: Saved
ASA Version 8.2(5)
hostname pxasa


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Cisco Firewall :: 5540 ASA Interface Input Error On Outside Interface

May 28, 2013

We are having Cisco ASA 5540 having Cisco Adaptive Security Appliance Software Version 8.0(5)23 at certain time of moment daily wer are facing latency and packetdrop wherin when I checked for ASA Interface which gives me " Input Errors" on outside interface ,so can any one tell me what are the causes to get input errors on cisco asa outisde interface.

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Cisco :: Simulating ISDN In Lab Using Serial Or Ethernet Interface?

Mar 4, 2012

Is it possible to simulate ISDN in a lab using a serial or ethernet interface. I want to setup FR and have ISDN running between a couple of routers with DoD routing.

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Cisco :: One Of ASA5510 Ethernet Interface Always Display Red Light?

May 21, 2011

I find that one of the ethernet interface of ASA5510 always display RED light

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Cisco Switching/Routing :: 4503 - How To Keep Ethernet Interface Up

Jan 18, 2012

There is some way to increase the speed of changing the interface state from DOWN to UP when the cable is connected. I need to configure a port of Cisco 4503 in a way that when a cable is connected the port goes immediatly UP.
A solution can be to keep Cisco interface always UP and I remember that with "no keepalive" command to the interface configuration it was possible. But I tried and nothing happens.

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Cisco WAN :: 7206VXR / Applying CBWFQ On Ethernet Sub-interface

May 6, 2012

i have 7206VXR with trunk interface toward customers, now i'm trying to configure CBWFQ on one of the sub-interfaces for specific customer,while trying to apply parent policy which includes child policy i'm getting the following message:Must remove traffic-shape configuration first.
here is the configured policy:

ip access-list extended ACL_TEST_SRV
permit ip any host
permit ip host any
class-map CM_TEST_SRV
match access-group name ACL_TEST_SRV


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Cisco WAN :: Track Interface On Ethernet Circuit 2900

Apr 22, 2012

The only option that I have under the IOS that's installed on a 2900 series router is track. I don't have a version that supports SLA. The interface is connected to a switch that the ISP gave, and all of the tests that I've done refuse to make the circuit go down. If I were to lose the circuit, the interface won't show to be down unless the switch were to go down.
Is there any way with track to see that the provider's circuit went down on a switch? I was going to set up sla to ping the ISP's address, but I can't do that unless I upgrade the OS. These are a pair of routers running hsrp at a remote datacenter. Is sla the only way that I'm going to be able to accomplish this? I have tried track with different options in gns and all of them keep the CE's interface up and doesn't show it down. Watching a route in the table isn't feasible because I wouldn't want it to fail over because another site is having problems. Tracking the route doesn't work for connected routes either because the route itself doesn't leave the table as long as the interface is up.

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Release Interface Loopback Pseudo - Interface 1 / System Do Not Find File

Oct 31, 2011

I share a modem and router with my building, and connect to the internet using an ethernet cable which plus right into the wall in my apartment. When I hover over the network/internet icon it tells me that I have a local connection only and can't get online. No changes were made to my computer between it working and not working - I have not installed any new software and the modem+router have not been changed.

When I try ipconfig/release is says it can't perform the operation while the media is disconnected. It also tells me that "an error occurred while releasing interface Loopback Pseudo-Interface 1: The system cannot find the fie specified".


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Cisco WAN :: 1T3 / E3 / 2951 - No Interface Corresponding To Module When Show IP Interface Brief

Feb 13, 2012

I have a 1t3/e3 card in a new 2951. When I statred the router, I found no interface corresponding to this module when do "show ip interface brief"

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Cisco Firewall :: PIX 501 / Can Traffic Goes From Inside Interface To Outside Interface

Oct 9, 2011

I have Pix 501 firewall and I'm just configuring the device for "Email Server" to allowing POP/SMTP.
Inside Interface Address:
Outside Interface Address: ISP provided IP address
My question is can my traffic goes from inside interface to outside interface? (because the inside interface address not from 10.0/172./192.168 private address)Also I'm allowing internet from this email server ( so what my access list to be configured? and what my subnet mask shoud be there?
Pix(config)#access-list outbound permit tcp any eq 80
Pix(config)#access-list outbound permit udp any eq 53
Pix(config)#access-group outbound in interface inside

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