Cisco WAN :: 3725 Replace 2Mb Serial Connection With Further 100Mb Connection
Feb 3, 2011
I have a Cisco 3725 running IOS 12.3. I have three WAN connections (2 x 100Mb and 1 x 2Mb serial) and I need to replace the 2Mb serial connection with a further 100Mb connection. However, I have not got any spare 100Mb sockets.My plan is to use a switch that supports VLANs, connect the three WAN connections to the switch, each in their own VLAN, then connect the switch to one port on the router, configuring the switch port as a trunk (so that it passes all three VLANs across the link) and configuring the router so that for that single Ethernet interface, it has three subinterfaces each configured for a VLAN that matches the VLAN used for the corresponding WAN connection.
I am a bit rusty on my IOS so I wanted to run this all past the community for feedback. [code] Any thoughts on whether or not that will work? Are there any commands from the original interface configurations that I CANNOT use when moving them to a subinterface? I'm thinking that the speed & duplex commands need to be removed?
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Feb 20, 2012
I want to know which router can be used on 100mb cable connectionThe router will be using the connection from cable modem on bridge mode/modem mode with eth to routerI kind of have a idea looking at performance ratings but ppl have mixed opinions when you enable NAT and ACLs etc etc285129013825.
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Nov 6, 2012
So I recently got a new computer today and it won't let me use my 100mbps of internet bandwidth. (Asus Sabertooth Z77 with an Intel 82579v gigabit lan controller) I noticed that at the LAN connection properties>Properties>Configure>Link Speed tab the 'Speed and Duplex' option was on Auto Negotiation and it was only accepting (or supporting) the 10mbps Full Duplex. When I switched it to 100mbps Full Duplex it would mark my connection icon with a red cross and when I clicked diagnose it said "Please connect your ethernet cable or your cable might be broken". So I tested my internet speed with that same cable on a different computer (laptop) and it worked with 40Mbps, so I don't think the cable is broken. Also I just recently downloaded some drivers but one was specifically for the Intel LAN controller but I'm a total noob for all of this computer stuff I don't know if it messed it up or something. Is it the motherboard that's not working correctly?
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Jun 4, 2012
I have a Cisco WRVS4400N on the latest firmware and I have just had my Virgin internet connection upgraded to the 100Mb. Once i thought it was upgraded i checked with a broadband speed test and it came back as 15Mb download and 5Mb upload. Before i rang Virgin i thought i'd check with a direct connection from my pc straight to the modem. Ran the speed test and it came back as 100Mb download and 5Mb upload. I thought the best thing to do is restore my settings back to factory and its still the same.
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Nov 16, 2012
I just bought this switch off Ebay and I can't seem to find anything online on the physical connection of this switch. It's not like normal switches where it just uses a ethernet type cable that goes to serial, it requires a female to female cable which does not exist anywhere so I ended up buying a gender changer for a normal cable I had but can't seem to get the prompt to come up. I'm using 9600, 8 data bits, no parity, 1 stop bits and no flow control. Do some wires have to be crossed a special way or something or do I need to type anything special in the console to get the prompt? I can't find much online on this switch. At least not as far as serial connectivity goes.
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Apr 12, 2012
i'm making up a new lab and need to create a simulated serial wan connection between 2 routers. I originally did it with 2 wic1t cards but i sold my old setup. I have access to wict1 cards i know they are serial connections. will it provide the same function as connecting with wic1t cards?
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Feb 7, 2012
I am a total new comer for Cisco Router. All I know is plug the console cable to a serial port on a PC, fire-up HyperTerminal to view and that's it. I don't know any command or scripts.
I am trying to setup my client connection, I already receive the required configuration settings from ISP. It is a Leased Line Serial connection.
How to setup the router with the below configuration.
Serial IP : 1.X.XX.222
Serial Netmask : 255.255.255.XXX
LAN IP : 1.X.XXX.1 to 1.X.XXX.31
LAN Netmask : 255.255.255.XXX
[Code] ....
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Jul 11, 2012
Have been battling a router connection to new ATT t1 connection. Router was configured and sent from sister company to this new location. We have had ATT tech test circuit and it tests good, had cat5 cable tested from ATT to router, it tests good. I continue to get serial up/ line protocol down status though and cant communicate to it from wan.
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Feb 24, 2013
Region : Malaysia
Model : TD-W8968
Hardware Version : V1
Firmware Version : 0.6.0 1.1 v0005.0 Build 120926 Rel.27100n
ISP : TM
I am having difficulty setting up the W8968 to replace the router given by TM for the Unifi connection.I tried updating the firmware of the modem router and used quick setup to configure the device as a wireless router using PPPoE, but still couldn't connect to the internet using the WAN port.I noticed there was a guide for TD-W8960N to set up TM Unifi but the web interface is too different from the W8968 interface.
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Dec 18, 2011
We're getting "Connaction Timeout / Connection Failure" error messages several time per day. Here is our setup:
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From past few months, we keep getting Connection Timeout and Connection Failure error messages in our vendor application which connects to SQL Server 2005. Also Terminal Server 2003 keep disconnecting for every few hours.After several days of troubleshooting, we come to know that this Cisco ASA 5500 is not working properly. When I access the ASDM, it shows several warning messages.I know there is a setting option to configure TimeOut, but is there anyway to test and track the ASA 5500 regarding this Timeout issues?
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Nov 26, 2012
I have a problem with my computer connections.When I plug in a network cable to access LAN, a wireless Internet connection gets disconnected.When I unplug the cable internet connection through wireless comes up.Some computers can support both connections cable for LAN and wireless for Internet.Other computers do not support both connections.
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Jun 25, 2012
I am trying to confgure a VPN connection on a Cisco ASA 5505, and I am supposed to translate the inside network from 10.200 76.0 to host 10.1.4.204, and then from that scheme establish a VPN with the host 66.179.80.108 on network 192.168.50.0/24. I was told that this Cisco ASA appliace would be able to translate the network address as a mask in order to make the necessary connection with the other site connection.
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Nov 15, 2012
I have an Acer 7750G, running Windows 7,connected to our home network using a Dynex router. At the moment this is the only laptop in the house that is having problems with connectivity. Starting yesterday, it only connects intermittently. When I run diagnostics, it says the following problems have been fixed but it either solves the problem for a few minutes only or not at all: "Problem with wireless adapter or access point" or "Default gateway is not available".
IPV6 connectivity also shows 'no internet access' and sometimes IPV4 reports no internet. I've unplugged and rebooted the modem and router a few times but that hasn't solved the problem.
Edit: I ran troubleshoot again, and it says the following issue is not fixed: "Wireless Network Connection 2 does not have a valid IP configuration".
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Aug 16, 2011
you have a Cable Modem and are paying for 30MB/sec download or better service, but the network connection on the cable modem is only 10/100; all very common today.Your network connection is showing it's connected at 100 (computer - router - cable modem)....now on the technical side, remember that a 100 MB network connection can only transfer data at a maximum rate of 12.5 MB/sec (not something the normal home user knows or even thinks about).So here's the question; why would you pay for 30MB/sec download speeds when the cable modem itself can only transfer (in theory) 12.5MB/sec to you over the network?
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Mar 21, 2011
I just bought a "DLink Xtreme N Gigabit Router DIR-655" I configured it correctly. It works well for the wireless connection but my Lan connection (wired connection) does not work. The Lan computer connects to the router but cannot access the internet. All of my machines work OK with a Netgear G router, including the Lan computer.
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Nov 29, 2012
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Nov 29, 2011
I'm looking into upgrading my WAN link to 100Mb via Fast Ethernet link. I'm waiting to hear from ISP about what exact technology they use, but according to my manager they will be coming in over fiber and then terminate to copper. I currently have 2811 in production with two T1 cards bundled together. 2811 has basic configuration with only 2 ACLs. I have ASA 5510 for NAT, Ipsec and other services. What router or networking device (layer 3 switch, such as 3560G perhaps??) should I use to accomodate 100Mb link? It seems that 2811 will not handle that kind of bandwith..In short the max recommended bandwidth limits for the 28xx series are as follows:
2801--2 Mbps
2811-4 Mbps
2821-8 Mbps
2851-12 Mbps
I don't want to create a bottleneck and am looking for appropiate solution to accomodate 100Mb link. Also, could ASA 5510 become a bottleneck in my scenario?According to Cisco docs ASA5510 can handle 300Mbps of firewall througput, but I'm not sure how it'd work in production...
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Sep 30, 2011
if i plug a cisco 880 router in to a 100MB WAN Ethernet circuit what throughput will i get? on cisco site it says 25mb/sec but if it is Ethernet shouldn't it be done in hardware and get the full 100mb/sec?
I know that a 1841 plugged in to a 40MB WAN circuit can match that speed but Cisco site say it only can do E1 speed.
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Nov 27, 2011
I have three ESW-540-24 10/100/1000 Switches in a small school environment
1. ESW performs as a server switch for out small cluster of VMWare ESXi Hosts and iSCSI SAN with a link-aggregation/lacp/etherchannel connection to the backbone switch, and a Link-Aggregated Connection to the thrid ESW switch via a multimode optic fibre link to a near-site backup and DR location
2. The second ESW acting as network backbone links back to the server switch and our older LinksysSRW224G4 (four SRW224G4s) switches using Aggregated Links / LACP to reduce bandwidth contention and allow for link redundancy
3. The third ESW as mentioned previously is at the backup DR location linked back to Switch 1
When using Single 1GB links between these three switches I can almost saturate the 1GB link (80-95% utilisation) as soon as link aggregation is configured by bonding 2x 1GB links together to form an etherchannel link utilisation will not exceed 100MB (network monitor graph on a server/ workstation runs flat at 10% utilisation) I have tested this multiple times useing large file transfers accross our SANs (which have high enough throughput to saturate links) and can confirm that performance degradation occurs as soon as an etherchannel is configured on the same ports (regardless of manually setting admin speed and duplex of copper ports etc) all indicators specify that ports are running at 1GB even though throughput REDUCES by 90%.
We are not running the latest firmware yet (2.0.3), however I have read the release notes for newer versions (2.1.16 and 2.1.19) and there is no indication of a fix for etherchannel/lacp performance issues.
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Mar 15, 2011
I am a traffic shaping newcomer and need some guidance as how to BEGIN to approach a problem with traffic. We have been rolling out Windows 7 at sites and the additional traffic it causes on installation is considerable as it has to request information from our central site to populate My Documents and Outlook mailboxes.This has caused some problems on sites as there traffic rates increase to the point that QoS is not sufficient to protect voice traffic and delays and one-way audio are being experienced.One question is this - is GTS a solution or is CBWFQ within GTS the solution or is something else preferable? The sites involved are data/voice with a variety of routers.Second question is this - if we have a remote site with a 3725 router as the WAN aggregator with one 4506/Sup IV and one Cat 3550-24-PWR the shaping should be best placed on the 3725, correct? Also, are there issues with shaping incoming/outgoing traffic as I seem to have read?FYI, the 3725 router has 12.4(8d) with IP VOICE/NO CRYPTO IOS version. The 4506 has 12.1(23)E4 with basic L3 feature set.
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Sep 4, 2012
I have a 3725 router and would like to upgrade the slot:0 compact flash to a higher capacity. My question is, I can just pick up a 4GB compact flash card from walmart, or do I have to have a card from Cisco?
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Aug 14, 2012
Is there a big difference in operating AP's when they are uplinked at 100mb vs 1000mb? We have 2 "main" offices that have AP's that are all connected to our access switches at 100mb. Recently with the addition of mobile devices, phones, etc we are seeing some issues. Today, we had a meeting room that had 20+ people connected to one AP and they started seeing issues of people getting disconncted or unable to connect.Just wondering if the uplink could have anything to do with this, or if we are just over subscribing the APs?
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Jun 4, 2013
I'm trying to configure and etherchannel between 2 switches. A 3750 and a 3750G, but the port channel is down: 3750. [code]
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Feb 24, 2013
Am trying to joing a Joining SF 300-48P 10/100mb Switch to a SRW2038 Gigabit Switch,
I purchased a "Cisco SFP+ Copper Twinax Cable - Twinaxial cable - SFP+ - SFP+ - 1 m" but I am uable to get connection
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Sep 4, 2012
I have a c3560 switch that has two gig fiber modules in it. I need to uplink fiber to one of these at 100mb. This is because this port will be rate limited to 20mb and 10 percent is the lowest you can go with the rate limiting command. Is there a 100mb fiber module i can insert in the 3560
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Nov 5, 2011
I have problem with my Internet connection. Recently my Internet connection often get slow. There are 3 connections on the server running Windows Server 2003. 1st is External, 2nd is Internal and 3rd is VPN (please see attahement). There is nothing to do with External and Internal connections, and everytime the Internet connection get slow, I have to disconnection VPN (connection) and connect it again.
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Jan 20, 2013
After connecting to the internet on my laptop, the internet connection will work great for 10 minutes or less than it slows down drastically or essentially not working at all. If I disconnect and reconnect it will work again but just for a short amount of time. The wireless connection works great on iPod, IPhone, and tablet. Downloaded Kaspersky Antivirus which said it fixed some viruses but internet got worse after that. Tried restoring the computer to factory settings and the internet stays connected for what seem a few minutes longer.
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May 13, 2012
Every time I boot up my computer, everything will be working fine for about 5 -10 minutes, but after this, all my browsers will lose connection to the Internet. All of them: IE, firefox, chrome, even the steam browser, all of them just lose connection.The weird thing is, my net connection is perfectly fine: I can still play online games, still use online chat services, still open and use programs like utorrent. It's like something is just blocking all my browser connections.When I run a network troubleshooter, it says "your computer appears to be correctly configured, but the device or resource (Microsoft Corporation: Software, Smartphones, Online, Games, Cloud Computing, IT Business Technology, Downloads) is not responding."I googled this and came across some apparent fixes like flushing and re-registering my dns and restarting my modem, niether of which has worked.In addition, this problem is showing up on two totally separate shared networks and has only affected my computer. Other netwworked devices, like friends/families computers and my iPhone (which I am using to type this) work fine.
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Jun 26, 2012
My hp laptop will no longer connect to the internet thru both a wifi connection or cable connection. I've also tried to do a system restore to an earlier date and it will not let mme do this either
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Oct 19, 2012
any 3725 IOS image that supports the ip sla command? I tried searching for it using the feature navigator but i received something like "15T" and I'm not too sure what that is.
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Jun 27, 2011
I'm trying to bring up two t1 and bundle them into a multilink on a 3845 on one end and a 3725 on the other end. On the 3845 I have installed two VWIC-2MFT-T1-DI and on the 3725 I have installed two VWIC-2MFT-T1 and a 1DSU/CSU-T1-V2.
For some reason I'm able to bring up the T1's on the DSU/CSU WIC. When I try to connect the T1 on the other WICs, on the 3845 I see SLIPs and Interface Resets however on the 3725 there is no errors however I still see UP DOWN.
CONFIG 3845
controller T1 2/0/0
framing esf
linecode b8zs
cablelength short 133
channel-group 0 timeslots 1-24 speed 64
[code]....
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Nov 12, 2012
I am implementing traffic export on the WAN interface of my 3725 router. I use a dialer interface for PPPoE which is applied to the Fa0/0 interface. This dialer WAN interface has Zone Based Firewall, NAT Outside, ACLs applied to it, as well as IP Traffic Export for an IPS. In what order would each of these items process a packet? In other words, is the order something like ZBF, ACL, IP Traffic Export, then NAT? How would QoS fit into something like this as well? I am asking because I am wondering how much processing the packets receive before they are mirrored over to my IPS.
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May 29, 2012
I have a Cisco 3725 router with IOS version "Cisco IOS Software, 3700 Software (C3725-ADVIPSERVICESK9-M), Version 12.4(12)". And this router is serving as a CE route for our MPLS connection to the service Provider. We do also have multiple VRFs ( around 10) and the WAN interface is DS3. So we created point-to-point subinterfaces and we put them in different vrfs. We have now transitioned to a new ISP and the ISP requested us to mark all of our outgoing traffics with DSCP AF31. So I have created the following policy-map
policy-map TRAFFIC-OUT-WAN-AF31
class TRAFFIC-OUT-WAN
set ip dscp af31
class-map match-any TRAFFIC-OUT-WAN
match any
Now we do have multiple GRE tunnel interfaces sourced from one of the WAN subinterface ( which is a member of VRF A). So the moment I applied the the policy-map on this WAN sub-interface (using the syntax "service-policy out TRAFFIC-OUT-WAN-AF31"), most of the GRE tunnels went down. And there is eBGP running on top of these GRE tunnels.
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