Cisco WAN ::1841 Routers Handle 45Meg Connection?

Apr 28, 2009

This is only a small portion of our network but my question is, can these 1841 routers handle a 45Meg connection?  I thought these routers were designed for T1/E1 type speeds.  I know I saw a router performance document somewhere that showed 1841's could handle 38.4MB of traffic and that is only with routing turned on.  If anything else is enabled, like access lists, NetFlow or whatever, that number will decrease because of the capacity of the router.  Am I correct in these statements?  Any document or anything else that shows performance of these routers? 

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Cisco VPN :: 1841 How Many Vpn Tunnels Will It Handle

Jun 5, 2011

I have read that the cisco 1841 can handle up to 100 VPN tunnels by default. Can this IOS version handle SSL VPN tunnels as well?

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Cisco Infrastructure :: 2811 / 1841 / WIC-1AM-V2 - Setup POTS Dial Connection Between 2 Routers?

Jun 17, 2012

I would like to set up a POTS Dial connection between 2 Cisco routers, using the modem card WIC-1AM-V2. I'd like to use this as an out-of-band connection to a remote site, if the primary internet connection fails. So, this setup will only be used in one direction, 1 router placing calls, the other one receiving calls.Here's my config of the receiving router:
chat-script dial "" ATZ AT OK "ATX3D T" ATS0=8 TIMEOUT 120 CONNECT C
interface Async0/2/0 description out of band for network no ip address encapsulation slip async mode interactive
line 0/2/0 session-timeout 5 absolute-timeout 10 script connection dial login local modem InOut transport input all escape-character BREAK autoselect ppp stopbits 1 speed 115200 flowcontrol hardware

This config is working fine, when dialing in via a Windows Hyperterminal Dial connection. After a while of dialing I get the login prompt of the router.Now I want to have a router placing calls instead of a Windows Server. I can't figure out how to tell a router to place calls to a POTS phone number.
Receiving router: 2811, WIC-1AM-V2, IOS c2800nm-ipbasek9-mz.124-25a
Calling router: 1841, WIC-1AM-V2, IOS c1841-advsecurityk9-mz.124-25a

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D-Link DIR-655 :: Can't Handle 450 Mbps Wireless Connection

Mar 24, 2011

I know that this Router of D-Link DIR-655 can't handle 450 Mbps Wireless Connection.

What is the newest D-Link Router available that can handle 450 Mbps Wireless Connection? Does the Network Wireless Adapters need to be change to achieve this?

TRENDnet 450 Mbps Wireless N Gigabit Router TEW-691GR (Piano Black)


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Cisco Routers :: RV120W - Pass VPN Request To LAN Server To Handle It?

Mar 6, 2012

I want to pass my client VPN request to MS Win Server 2003 - on FW I forwarded port for PPTP service to my server address, but on client side I get an error 619. On Cisco RV120W I have Site-to-Site VPN tunnel which works fine, PPTP server on Cisco is disabled. What should I do to pass VPN request to my LAN server to handle it?

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Routers / Switches :: Is This Network Able To Handle Wifi 200 Clients

Sep 30, 2012

is this network able to handle wifi 200 clients?Load balancing QNO FQR7110[URL]Access point: TP-LINK 300Mbps Wireless N Range Extender (TL-WA830RE)[URL].My client is all students... and all of them will connect to the internet by using Wireless connection.So i estimate 12APs for them.. each access point will have around 17 clients...and the 6 APs will be connect to 1 HP 1910 Switch Series 8 ports switch...*Note: the switch is Smart managed switch, but im not going to setup it.. i will just plug and play..May i know it is suitable to use that model of device to setup the network with 200 clients?The load balancer and switch it is enough Processor and RAM?

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Cisco Routers :: Wag120n How ADSL Modem Handle Incoming Sip Calls

Feb 14, 2013

I have a Cisco wag120n adsl modem. I am setup with a SIP provider, so all my incoming and outgoing calls use SIP.So my question is, how does my ADSL modem handle incoming SIP calls,e.g the SIP call comes in and reaches my adsl modem. Then, how does the modem find the actual port that has my ATA adaptor (analog phone) or CME router attached  ? I know port forwarding would handle this, but I am not actually using any configured port forwarding rules.

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Cisco WAN :: 2921 Handle 100mbps Connection Plus Operate BGP With Partial Updates

Mar 1, 2013

Can a Cisco 2921 handle a 100mbps connection plus operate BGP with partial updates? I am worried about the CPU.                  

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Cisco Routers :: How Many IP Address DHCP Server Can Handle Of RV0xx Series VPN Router

Sep 6, 2011

How many IP address can handle the DHCP server of the RV0xx Series VPN router? can be configured for more than 250 ip addresses? it is posible to configure the router in order to have more than 250 ip address?

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Cisco WAN :: Connecting Two 1841 Routers Together

Feb 6, 2011

For educational reasons (a Videoconference class), I need to connect two 1841 router with each other. They both have HWIC-2T modules, but it's almost impossible for me to have the CAB-SS-2626X Smart Serial crossover cable on time. So, I was wondering if there will be some kind of a problem if I connect them through a UTP crossover cable using their FastEthernet interfaces. I suppose it will not "simulate" a serial wan connection but, would it work as a router to router connection?

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Cisco WAN :: 1841 - Two Routers Connectivity In LAN

Oct 15, 2012

I am having two routers of 1841 series.In router 1 I am connected with my Cloud Network and in router 2 I am connected for internet.
 I need both the wan connectivities to be advertise in my network for my LAN which is configured with DHCP in my ROUTER 1
Now should I connect this both routers in one switch but I'm having 2960 switch :-(
what should I configure Policy base routing or static route.
Router 1
int f0/0
ip add 10.x.x.x


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Cisco WAN :: 1841 / C850 - VPN Set Up Between 2 Routers

Aug 30, 2012

I'm trying to do vpn between two routers. The first router model 1841. Dial settings is like this:

crypto isakmp policy 1
encr aes
authentication pre-share
group 2 
My other is model c850
crypto isakmp key 6 cisco address
crypto ipsec transform-set yoni_to_hakim esp-aes esp-sha-hmac
crypto map yoni_to_hakim 10 ipsec-isakmp
set peer

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Cisco VPN :: 1841 - Creating Connection Using SDM

Feb 12, 2011

i am trying to make site to site VPN on cisco 1841 router using SDM , but I faced a strange problem . I successfully install sdm , internet browser , disabled block pop up , and java . i successfully can run SDM and configure the router using it .
BUT\ when I select VPN>>Site to site VPN >>Create Site to Site VPN tap >> and Press on Lanuch the selected task to start the creation process using the wizard Unfortunately it is not working ,, I  don't know why ?
I tried with another PC , another SDM version , another browser .

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Cisco WAN :: 1841 Connection Between ISP And Firewall

Apr 2, 2012

I have a Cisco 1841 serving as a connection between my ISP and my Firewall (non Cisco).
I seem to be having performance issues with my traffic going through the Router.HTTP (web browsing) is fine andI get my download rate as I would expect for a 10mbps connection.But anything to do with my VPNs I find a delay when sending via the 1841.(all my VPNs are managed by my Firewall and I have never had problems with those).
I also have a legacy ADSL connection to my firewall, which bypasses the 1841 and I am having no issues on that at all.If anything it is quicker! Which is madness as my Fibre should out-perform it easily.This leads me to believe the issue is not with the Firewall.
My 1841 is very simply setup, 2 fa interfaces with simply a default gateway setup within it.Which leads me to ask if I need more static routes in or a dynamic route protocol setup?

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Cisco WAN :: DHCP Logging In 1841 Routers

Jul 26, 2011

We are running DHCP Server on our cisco 1841 routers with 12.4 IOS. We want to maintian a Database of all the DHCP IP Leases by the server (ie router), the time and date of lease all the information in a Central / Branch Database.

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Cisco WAN :: 2951 / 1841 - Backup Setup With 2 Routers And BGP?

Aug 20, 2012

I am looking to setup a solution for backing up a Metro Ethernet connection on a 2951 using an 1841 and 2 T1's in a Multilink. The Metro E will be primary, and if the BGP peer goes down, I want it to switchover to the 1841. Can it be done and is there an example of the BGP setup to work off of?

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Cisco WAN :: 1841 With 3G HWIC - Backup WAN Connection?

Jul 3, 2011

I'm trying to backup my primary WAN with secondary backup connection - 3G WAN through Cellular 0/0/0.Point  is that I need to track some external IP address on my primary  interface, for examle If it is not reacheable, then router  brings up backup connection - 3G. This can be done by using  dialer-watcher.Simple.But unfortunately my primary WAN interface is an  FastEthernet, which is the coonected to a switch, switch to WAN . There  is no dialer-watch commands on it. Thats sad .

One more time :
WAN -> SWITCH -> ROUTER(WITH 3G HWIC and Fa 0/0 connected to switch).

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Cisco VPN :: Establish VPN Connection Between ASA And 1841 Router?

Feb 7, 2011

I am facing problem when trying to establish VPN connection between ASA and 1841 router. Peer comes up but traffic is encrypt and decrypt. when assign route (ip route 192.168.x.0 fa0/0)  to remote local subnet there is a traffic but one reply and one drop
ping from
Reply from 192.168.x.55: bytes=32 time=493ms TTL=127Request timed out.Reply from 192.168.x.55: bytes=32 time=633ms TTL=127Request timed out.Reply from 192.168.x.55: bytes=32 time=375ms TTL=127Request timed out.Reply from 192.168.x.55: bytes=32 time=528ms TTL=127Request timed out.


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Cisco VPN :: Between 2 Router 1841 Using HDSL Connection?

Feb 15, 2011

I've to realize a VPN (ipsec) between 2 side that use a Router Cisco 1841, each one with its own public IP.The 2 side can ping each one with Public IP but the VPN are in DOWN's state.The schema is the following: (LAN1) <-> Ro1 (X.X.X.X) <- VPN -> (Y.Y.Y.Y) Ro2 <-> (LAN2)
the configuration of Ro1 is showed of following, the same configuration is present also in Ro2 but with different IP address
sh runBuilding configuration...Current configuration : 9808 bytes!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecservice password-encryption!hostname TEST!boot-start-markerboot system flash c1841-adventerprisek9-mz.124-24.T.binboot-end-marker!logging message-counter sysloglogging buffered 51200 warnings!no aaa new-modeldot11 syslogno ip source-route!!!         !ip cefno ip bootp serverip domain name test.itip name-server x.x.x.xip name-server x.x.x.xip inspect log drop-pktip inspect max-incomplete low 300ip inspect max-incomplete high 400ip inspect one-minute low 300ip inspect hashtable-size 2048ip inspect tcp synwait-time 20ip inspect tcp max-incomplete host 300 block-time 60ip inspect name IDS tcpip inspect name IDS udpip inspect name IDS ftpno ipv6 cef!multilink bundle-name

so, of following the screen of the answer of these commands.
Ro1(config)# sh crypto session Crypto session current statusInterface: Serial0/0/0.1Session status: DOWNPeer: port 500 IPSEC FLOW: permit ip Active SAs: 0, origin: crypto mapRo1(config)# sh crypto map interface serial 0/0/0.1Crypto Map "VPN" 1 ipsec-isakmp Peer = Y.Y.Y.Y Extended IP access list 150 access-list 150 permit ip Current peer: Y.Y.Y.Y Security association lifetime: 4608000 kilobytes/86400 seconds Responder-Only (Y/N): N PFS (Y/N): N Transform sets={ VPN-SET:  { esp-3des esp-sha-hmac  } , } Interfaces using crypto map VPN: Serial0/0/0.1

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Cisco WAN :: How To Do IPL Connection Using 2801 Router To 1841

Dec 26, 2012

I  need some clarification if it is possible to do an IPL connection  between Cisco 2801 (T1) to Cisco 1841 (E1) via Ethernet (2801) to Serial  (1841).
I am unable to find any documentation about this and I need to connect our network to our overseas office.
Our side uses the 1841 router and our provider has set-up our E1 connection to be via Serial interface while on our overseas office uses the 2801 and will connect via the T1 card, which by  the way does not have any serial interface ports just ethernets.
So far checking on how to configure this, I am unsure on how the connection will happen since the info that I got is that T1 does not have the option to hold an IP address (also unsure on this though). With this in mind and that the 2801 does not have serial interfaces, does that mean that IPL connection would be via the available Ethernet ports?

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Cisco Switching/Routing :: Connection Between 1841 And Linksys?

Apr 9, 2013

I tried to connect a 1841 to a Linksys with a static route. I am able to ping from a computer in the 1841 to a computer in the linksys network, but I can't ping from a computer in the Linksys network to a computer in the 1841 network?

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Cisco WAN :: Leased Line Connection Through ONT To 1841 Router

Jul 29, 2012

How to configure leased line from the ONT connection on Cisco 1841 router . there have public IPs on the interfaces fa0/0 & fa0/1.

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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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Cisco WAN :: 1841 - Layer 2 Connection Between Distant Model?

May 21, 2012

I have two 1841's connect to the Internet via DSL;
fa0/0 --- 1841-R1 --- DSL1 ---------------------[INTERNET]--------------------- DSL1 --- 1841-R2 --- fa0/0
I am on the LAN attached to fa0/0 on R1 and I need layer 2 connectivity to a device on fa0/0 on R2. I'm not sure if this is possible with 1841's or not? I made a GRE tunnel between the two and was going to add a BVI and bridge the tunnel at each end with fa0/0 at eah end, but the 1841's don't support BVIs so I'm a bit stumped here! Would L2TP work here?
R2 is a remote router running C1841-SPSERVICESK9-M. R1 is local running C1841-ADVENTERPRISEK9-M. I can't change the remote router so if the answer is not support in C1841-SPSERVICESK9-M I won't be able to do this.

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Cisco WAN :: 1841 - IP / Assign Routers To Test Pinging And Getting Traffic Flowing?

Jun 3, 2013

I have two 1841's, setting up a Lab WAN in Packet Tracer. I have one of the 1841's run to a DSL modem, then out to the cloud and the same setup on the other end... from the cloud to the DSL modem and to the 1841 on that end... I have all green lights, so that tells me layer 2 is up, but I'm trying to figure out

what IP to assign the routers to test pinging and getting traffic flowing. but the DSL Modem's have the public IP's and dynamically assign an IP to the routers? I've also tried setting up a static IP on the routers fa0/0 interfaces and the pings fail.. Wondering what I am missing to get these two talking.

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Cisco Switching/Routing :: 1841 - Connecting Routers Via Serial Interface

Oct 22, 2012

While I managed to connect to each router individually, I decided it was time to connect the routers together via serial; as I don't have any serial cables and need to buy some, what serial cables I need, as well as to ask whether I have the right cards in my router(s) that will allow me to do so.
I bought 3 1841 routers, and all have a 1 port serial WAN Interface Card (WIC 1-T); one router has 2 of these, and one router has a WIC-1B-S/T .. My question is, can I connect the routers with a serial cable via WIC 1-T, or do I need a 2-T

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Cisco Switching/Routing :: 1841 Existing Routers Do Not Have Enough Flash To Hold 2 IOS Images

Apr 2, 2009

I have 1841, 2800 and 3800 routers and need to do IOS upgrade to all of them.  Existing routers do not have enough flash to hold 2 IOS images.if the router has 12.4.13r ROM IOS, will I be able to boot the ISR router via Cisco brand USB?  That means in case something goes wrong while I am uploading new IOS to the router via WAN and something wrong, now router in ROMMON mode.  If a local site person has a Cisco USB with an IOS in it, can he just stick it to the router and reboot the router and router will go out of rommon and go into normal mode?  After it is working, then I can put the running IOS onto the exisitng CF card so now I can remove the USB and the CF card has a good IOS and reboot the router again.I am just trying to find a safe way to upgrade the site when they don't have big enough flash to hold 2 IOS at the same time.  The local person is not technical so asking him to setup tftp server and put the IOS in the computer and so I can do tftpdnld while in rommon mode to grab the IOS from his tftp will be difficult to have the local person to set it up.
If ISR can boot off of the IOS in USB only, then I assume the requiremetn is the ROM IOS needs to be 12.4.13r.  Then what is a safe way to upgrade the ROM IOS to this then?  I never upgrade ROM IOS before so don't know what kind of problem I may run into and whether it's higher risk to upgrade this than upgrading the regular ios?  If it is, then all my routers won't have this ROM IOS version, so that means I can't use USB to boot then?  Will that means I am down to tftp server option?  ( I heard xmodem won't work as it will time out before the ios can load via the slow dialup link into the router to rescue it from rommon mode).

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Cisco Switching/Routing :: 1841 - No Connection Through Gateway With Windows Server?

Aug 26, 2012

Our company has a Cisco 1841 router which provides our connection to the outside world. We also have a windows server which provides our DHCP and DNS services. Our workstations which also get their lease from the server (using DHCP) do have a connection to the outside world.

when we connect a new computer or other device to the network we can only ping as far as the inside interface of the router. But when we assign the ip settings staticly we do get a connection, even if we configure it with the exact same ip as a lease it got a few seconds ago.


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Routers / Switches :: Isolate 1841 Router Fast Ethernet Port?

Feb 4, 2011

I have a Cisco 1841 router with the followingSerial T1 connection Fastethernet 1 with network address Fastethernet 2 with network address want to isolate Fastethernet 2 so that it cannot access the internet or the network. Only incoming request is available.

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Cisco WAN :: 891 Can Handle 50Mbps Up / Down

May 8, 2013

I have a ISR 891 (no-wifi) router that I have been using on a 20Mbps x 20Mbps fiber circuit.  It was been performing just fine.  I am upgrading the curcuit to 50Mbps x 50Mbps soon, and I wanted to check if this router can handle that much load.
I don't do anything fancy with the router, just plain old routing (I have a firewall behind it).
Do you think the 891 can handle 50Mbps up/down, and if not what would you recommend for this new setup of 50x50Mbps.

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Cisco Infrastructure :: 1841 Dialer Profile - Connection Exists But No Telnet Session Possible

Jul 11, 2012

I have a big problem with my Cisco 1841 and the WIC-1AM-V2 in Slot 0.I got the task, to test if it is possible, to build up a connection (Dial on Demand Routing) to a remote modem, which is connected to a console port of another Cisco 1841, with the integrated modem card over POTS from the CLI of the router. My router will only dial out to the remote modems and only if its needed.I am connected to the router with the integrated modem card over a console cable on the console port. The remote modem is also connected to the console port of the remote Cisco 1841.
I found out, with my Dialer Profile configuration, it is possible to build up a connection. I configured a dialer list, that specifies that all ip traffic is permitted an interesting for my dialer interface. So a telnet or ping brings up my dialer, which brings up my Async interface. With the "show line" command, I can see that the TTY line, connected with the Async0/0/0 Interface is in use for 5 minutes, because of the "exec-timeout 5 0", which is configured on the remote router. Now the problem is, in this 5 minutes, I can not use a remote telnet on this line with my loopback interface, because the line is already in use and I get a "connection refused". The first telnet I use runs in a timeout, because the remote host is not responding. When I dial out directly from the modem card and not from the CLI with the AT-commands, I get also the connection and with a return i get the login prompt. I will post my actual config, so that you can see maybe a mistake I did or which command I must use, to get a working connection. [code]

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Cisco VPN :: Does The 867w ISR Router Handle BGP

Aug 3, 2011

I am trying to set up a VPN between my Cisco 867w device and the Amazon EC2 VPC solution. Amazon have stated that the Cisco ISR routers of IOS 12.4t and above should work, but when trying to input the config generated form the Amazon system into the router, the BGP config lines are not recognised. Does this router support BGP?

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Cisco WAN :: How To Handle Non-overlapping Subnets With ASA 5520

Nov 25, 2011

Our IPS has given us a second range of IPs as we were running out.  Unfortunately, they can only give us two non overlapping range.  I am running two ASA 5520 in fail over to handle our traffic but I don't know the best way to use both external ranges.  This is not a failover scenario -- and I need outward facing servers on both ranges.  It is adventageous to us to keep the two external subnets separating two of our operations so we don't want to bring everything into one subnet (long story).I have one NIC designated outside that will need to cater for both wans.  As there are two subnet there are two gateways.  How do I keep the traffic on track?

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