Cisco WAN :: 3660 Slow Network Connection
Sep 3, 2011
I think I might have a problem with how my network is set up.
Cable Modem --->ASA5505--->Cisco 3660--->Switch For some reason if I use the ASA as a DHCP server too, the internet is much faster. Could the 3660 be slowing down the netwok? The 3660 has 2 FE ports, so it should be running good at 10/100 correct? Is there another setup I should consider to speed up the network? [code]
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Jun 19, 2012
I am using cisco c3660 to act as Terminal Server for the communication of production machines in my company, recently there is a communication lost issue happen and its due to physical cable unplug from the machine. to troubleshoot for this issues i have to physically go inside my production area to check on it, as i understand from vendor we can check on the physical machine to see whether the LED light on the module is green or not, but in case of need to troubleshoot at night time, its time consuming as i need to travel back to company. is there any command that i can issue in the router c3660 to check on the physical connection between c3660 router and the production machine? the IOS version is IOS (tm) 3600 Software (C3660-I-M), Version 12.1(4)
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Apr 15, 2013
My brother is using an insane amount of bandwidth, and being from Australia, we don't get very much unless we want to pay very much
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Jul 20, 2011
Newbie network admin here and I'm having problem dealing with my LAN. I have two networks 192.x.x.x and 10.x.x.x, Configured at my Astaro 220 UTM, which obviously where the gateway is, from my UTM I have 3 isp connected which is the source for my internet. Now from astaro to my core there are two connection, 1 for the 192 network and the other is for the 10 network and from the core there goes my LAN where switches are cascaded.My problem is i'm having slow connection accessing from 10.x.x.x to 192.x.x.x network vice versa. what are the possible solutions is applicable, or the things I should check. plus I can't access(configure) my switches which is on the 192 network from 10.x.x.x. network through web.
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Aug 13, 2011
I recently moved to a new apartment to be closer to work and this apartment complex is only covered by what I was told is a wireless hotspot.Basically, a wireless devices connects to the SSID, logs in, and then you're set with the most pitiful internet still available.Now I was told I could pay $70 bucks to have these people (Onlyinternet.net by the way) install a device that would allow me to connect my desktop to the internet service. Wasn't thrilled about that. Its $40 a month, for a 1Mb connection so that wasn't going to happen anyway.Looked up internet connection sharing and had setup my laptop to use it with my desktop.My connection on my laptop has always had a very low signal; between one and two bars no matter where I'm at in my apartment. If I go outside it'll get about 4 bars but that is about it. The actual speeds listed on the Wireless Network Connection Status go from 1Mbps, 2Mpbs, 5.5Mpbs and 11Mbps. Never higher.Today I went and picked up a NETGEAR N300 wireless router. My hope was that the router might be able to pick up the wireless connection and I could just connect through my router instead of having to use my laptop. Apparently, this is not the case.I have to use my laptop act as a modem and have it plugged into the Internet port of the router and then my desktop connected to one of the LAN ports on the router. Is this setup better then using the internet connection sharing deal? Is there any other way of increasing my signal strength and network speeds?
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Aug 1, 2012
I recently built a new PC with an "ASUS PCE-N10" PCIE network adapter. I installed the drivers and everything was secure and nice and fast.
I moved the PC into another room this morning and everything was fine for most of the day. It's stopped working properly though now for some reason.
The connection is much slower and the speed keeps yo yoing and then cutting out. The signal is slightly lower due to positioning but it's still high enough. When it disconnects I use Windows troubleshooter to fix the problem and it says "Wireless Network Connection" doesn't have a valid IP configuration". It usually reconnects me then, but is still slower than it should be and it doesn't last for long.
I've tried connecting to a chosen IP but it just doesn't work. Other computers on the network are fine. Why now? What's happened?
Windows IP Configuration
Host Name . . . . . . . . . . . . : Joe-PC
Primary Dns Suffix . . . . . . . :
[Code]......
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Feb 18, 2011
My network is slow with a normal switch connection. How do i improve the connection and can cisco switch improve performance?
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Jan 30, 2012
I am puzzled about some problems that occured at my work place. Unmanaged switch like D-link & Linksys was used and it worked pretty fine only for certain areas of the factory. Then office with more workers will be using managed switch to ensure the workers have decent connection to the local server.
Question is, why are some small offices' connection so ridiculously slow?
*Info*
The switches manage 4PCs
Tested - The main connection cable cannot go through the switch to distribute the connection. Even if there is only 1 PC linked to the switch, it will still be slow. It will be at it's max if it didnt go through the switch, but directly to the PC instead.
True enough that unmanaged switch aren't smart enough to allocate the speed, but why is it possible for some other part of the small office to have fast connection even by using the normal unmanaged switch?
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Nov 2, 2011
I use to be able use the Internet when i am down stairs - i was able to stream videos without any lag, load any websites very fast and download files within minutes/ hours. The router is placed upstairs(i live in a flat) and when I am right next to the router the Internet is fine like before. Its only when i go downstairs that using the Internet is impossible.I have uninstalled the driver for the wireless adapter and installed/ searched for the latest driver without any luck. SONY VAIO VGN-NR32L LAN-Express AS IEEE 802.11g PCI-E Adapter?
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Apr 27, 2013
We have been having a very abnormal speed issue. This one has me stumped. I am fed up and thinking maybe its an Att issue that will NEVER be resolved.Brother comes and bothers me Zach internet is slow thinking hes just being picky I tell him to reboot his computer. He says its still slow. I run a speed test from my desktop computer I get a 5.36Mbps download and .63 up. I go to his windows xp professional laptop and run a speed test he pulls .63mbps down and .32 up. This is a Dell Latitude D610 with built in wifi. My desktop just so happens to be a wired connectionI grab my laptop which happens to be the exact same model and experience the same result. So I power cycle to modem, then the Linksys ea2700 router. The speeds go back to 5.37m down and normal speed up. Then after 20 minutes its back to a CRAWL.
OK the router MUST be dead. I will kill two birds with one stone. I plug in my Modem/Router combo 2wire 2700. Speed does the same thing starts off fast then slow to a crawl. Figuring it's a laptop issue I use a Linksys wireless USB adapter AE-2500. I get the same result fast then slow. NOW the crazy thing is that its only on my wireless connections. The wireless computers use wireless G and say 54mbps so why would the internet be slow only on the wireless connection.So maybe it's an interference issue So I start up the generator and plug my modem router and laptop into it. I then shut off THE ENTIRE POWER service to my house! I get the same result fast then slow. My neighbors are far apart and I have switched wireless channels and even used the 5ghz frequency with the same results.An ATT Tech says the line is fine. They came to the house and tested everything. The only thing that has happened recently was a storm which left flooding in some parts of town. Only one time was I able to test my WIRED computer and get a download speed of .04Mbps down and .32 up
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Aug 4, 2011
I installed the E4200. Internet works fine, and the internet connection is maximum performance. But if I copy a file between laptops, or to my mediaplayer (AC Ryan HD2), the connection is 3MB/s tops. I changed to the 5gHz and N settings, still no change.
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Feb 5, 2012
A month after i had this laptop(bought new) its started have insanely slow connection times after booting up. The little blue circle starts to twirl meaning its searching for a wireless network. It then freezes and takes about 1 min- 5min to actually come back to normal and connect to a network. If i hibernate or standby there is no such problem, only after a fresh reboot. For this reason i usually never turn off my laptop, thus avoiding a lot network connection wait.
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Aug 23, 2012
I have been having problems with my Internet the past couple weeks. If I am watching a video, it doesn't matter which site, the video will stop and start from the beginning or the video will just stop altogether and I have to refresh the page. Another problem that happens while browsing, it will take about a minute for a page to load. The computer I am using is wired right into the router.
The rest of the family's computers the apple tv and the roku are wireless. I have been hearing complaints from them and have witnessed the laggyness. While streaming videos on the roku or apple tv, the video will stop and say video is not available or no connection. This is what I get from ipconfig/all
Microsoft Windows [Version 6.2.8400]
(c) 2012 Microsoft Corporation. All rights reserved.
C:WINDOWSsystem32>ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : Matt-PC[code]......
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Sep 9, 2011
I am wanting to take my cable internet connect and give it to the other to networks and be able to communicate between the two networks. I believe this can be accomplished by IP routing, but have no clue on how to do it. What I would need to input into the 3660 to make it work? Right now the 3660 has the factory default setup, I haven't configured anything on that yet.
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Sep 10, 2011
I have two LANs in my house, one 10/100 base and the other 10/100/1000, but one internet connection that I would like to have access to on both networks. Right now I have two Belkin routers for each network. In addition I have a Cisco 2600 and 3660. I know they are old, but they seem to be in operational order. Can I use those to combine to two networks? The only thing I want to maintain is the speed on the gig network, from the router to the PC's and devices.
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Apr 21, 2012
I need data sheet ( technical sheet) for Cisco3660-MB-2FE router.
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Aug 20, 2012
I am having a problem with my cisco 3660 router. I have installed a wic 2T interface card and every time i set it to "no shutdown" the interface always went down and keep getting the following message " %FECPM-2-SCCFAIL: Init of SCC2 for int 0/0 failed to do fecpm_dma_init" .
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Jun 3, 2007
I am using 3660 Router, all cards are working fine as expected but NM-2FE2W is booted & then down. Following error is occurred in show diag "Port adapter is disabled deactivated".I have reset the card as well as router, changed the slot of card, but the problem is not resolved.
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Apr 29, 2012
I am facing low relaiblity issue in one of the ethernet port even no link is connected to that port.
Router model : cisco 3660
IOS - c3660-ik8s-mz.122-24a.bin
Ethernet1/2 is up, line protocol is down
Hardware is AmdP2, address is 0007.85fb.c312 (bia 0007.85fb.c312)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
[Code]...
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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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Feb 11, 2013
How filter inbound routes in Cisco ASA OSPF? Because Cisco ASA has no "distibute-list" command for OSFP process configuration, I try to use "filter-list" command in area definition. So, I try to use next configuration:
R1 (Cisco 3660):
skip
!
router ospf 1
[Code].....
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May 26, 2013
I have a good working knowledge of TCP/IP networking. I have a Cisco 3660 router I'm wanting to use in place of a WRT54G router with my Charter cable internet service. I saw a youtube video where a guy demonstrated how to use a Cisco 2600 series router with home broadband service. I followed the video to setup my 3660 router. I can ping the LAN side (192.168.1.1) with no problem, the DHCP functions as it should. I can see activity on the on the WAN port indicator but no internet access. I have attached .doc file that shows the "sho run" info. My network will be setup as follows Charter Cable Motorola Surf Modem - ethernet to MM fiber converter - MM fiber over to Sun Microsystems cabinet fiber closet - MM fiber card (on Cisco 3660 router FA6/0 WAN interface) - LAN interface FA0/0 - Cisco 3524 managed switch. One of the gigabit MM fiber ports on the Cisco 3524 feeds a 3Com Superstack 12 port gigabit fiber managed switch. My two Dell 2950 servers will be on the Superstack gigabit fiber backbone. The Cisco 3524 10/100 ports will have a Cisco access point, two IP addressible battery backup units, two Dell Desktops, and a LG Blu Ray player.
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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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Oct 16, 2012
I have a really poor internet connection on ASA 5520 after creating a Redundant Interface with interfaces 2 and 3. As you can see, something is really weird:
Interface GigabitEthernet0/1 "", is up, line protocol is up
Hardware is i82546GB rev03, BW 1000 Mbps, DLY 10 usec
Auto-Duplex(Full-duplex), Auto-Speed(1000 Mbps)
[Code]....
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Jan 24, 2011
We have a 4mbps unlimited connection and the internet speed which is connected via wireless to 2 systems, is good in one system out of two. the connection in one alone is very slow i mean dead slow.
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Apr 26, 2012
For the past two weeks or so, my internet connection on my pc has become extremely slow(from 200kb to 10). Not only has it gotten slower, i also cannot download anything without the connection stopping. The problem, i believe began a couple months ago with just youtube videos streaming slower and downloads stopping ever few minutes, but until these past two weeks its never been that much of a issue. I know the problem is isn't my dsl because it works fine with other internet capable electronics so it must be a software/driver issue.The svchost uses up 100% of the CPU when something tries to update so it likely might be a windows based program acting up.
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Feb 21, 2013
I have my router connected to my ISP, but for some reason I am getting really slow internet connection compared to a home Linksys router. I can only think it may be to the fact my port is set to auto speed and auto duplex.
Sometime the websites are fast, other times slow. Cannot seem to pinpoint the reason since my code is so basic.
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Oct 25, 2011
cisco E3200 wireless connection slow.
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Aug 5, 2011
I'm an IT professional with more than 10 years experience. I have spent last 5 days trying to figure out why the wifi connection to this router is so slow, but still no luck. I'm getting only 13Mbps even if my laptop is next to the router! (wired connection worked ok)
I have tried all sort of setting combinations, 2.4GHz/5GHz; N only/ G,N Mixed; Auto/20MHz bandwidth; different channels; WPA2 encrypted vs open; disable firewall; wmm enabled/disabled; 1.0.0.26/1.0.1.0 firmware... no matter what I try, I always get only 10 - 15Mbps speed.
Once I replace this router with my old router, it worked perfectly --- getting 70 - 80Mbps with exactly the same testing environment and configuration.
I really expect this router to offer much faster wireless speed according to this review: [URL]
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May 5, 2012
a customer is running ASA5505 and they have a cloud server behind site-to-site VPN tunnel. They are complaining that FTP transfers are very slow (3-4MB) and the connection goes down very often. They are transfering large (3-6GB) back-up files and ISP connection is 100MB fiber.The problem is not the speed, but that FTP fails to transfer the backups. I recommended to drop MTU size from 1500 to 1430 from the server side, but it didn't seem to work.
Basic info about the tunnel:
P1 Diffie: Group5
P1 Enc: 3DES
P1 Auth: SHA-1
P1 Lifetime: 28000
[Code].....
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Aug 29, 2011
I have created a Remote VPN connection on a Cisco ASA 5505.When I'm connected remotely through the Cisco VPN Client my connection is very slow.I have a response time of 220ms when I ping my server. how to improve the speed of the VPN connection?
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Dec 20, 2012
i got an issue with vpn and cisco rv100w, router is configured well and computers and iphone can connect with PPTP. Problem became when we map NAS drive from computer or we move data (1-4 Mb). Seems connection go down, speed is so slowly and drop the connection.Is it from router? or from Internet provider?
More data, If I connect to http of router/NAS .. all go fine, only when we need data from NAS (map drive by windows) copy, open files, ..., connection is so slowly and drop connection.
I saw in the logs of the router
[code]...
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Jan 22, 2011
I've connected my 3 pc's to share file printer and internet using peer to peer connection but on the clients pc the internet connection is soooo slow? my two computers are windows XP an d one Windows7.
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