Cisco WAN :: C1861 And ZBF Performance With Download Is Poor
May 1, 2011
having a very strange problem with a Cisco 1861 running - Cisco IOS Software, C1861 Software (C1861-ADVENTERPRISEK9-M), Version 12.4(24)T5
The issue -I have suddenly started to get performance issues with downloads and access through the ZBF. Without the firewall enabled and just having NAT enabled and routing , downloads perform as expected - ( have been using Itunes download as test file ) - with the ZBF enabled , and the necessary rules installed to inspect & allow traffic - downloads stall - and the only way to get the downlaod to start again is to pause , then resume. The stalls are anything between the first 25 - 120 secs.
I have debugged and performed packet traces - but cant see anything untoward. I have also placed another router ( just a cheap Belkin ) on the ADSL service and again , the downloads work as expected.
one further thing to add is that when im tunneling through the firewall ( VPN ) , then downloads do work as expected - suggesting that the issue is with native HTTP(s) traffic.
I have upgraded from T4 to T5 - and the symptons still remain - I am thinking that these may have been introduced when i upgraded to T4 a few monthes ago.
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Nov 30, 2012
I run my virgin broadband through an old NTL modem and a Belkin router. I haveit all attached to a computer in my study along with a new 6TB Buffalo Nas drive. The computer has GIGABIT LAN. I use Belkin powerline units to relay the network around the house. In my lounge i have a blu ray player, AV amp and my sky box attached to the network via the Belkin powerline units and all run ok. This week i have added a Cambridge audio streamer but i am suffering now from a lot of dropouts and network failures escpecially when trying to stream music from my NAS. all seem to be set up correctly as per the manuals. I have spent a lot on this unit specificallly to stream my music so this is really important to get working correctly The powerline units can flash blue (fast ) or orange (slower) but i only see the orange light .My local dealer says i need to upgrade my Modem/Router and has suggested an ASUS RT-N66U which I understand is a modern 2.5/5ghz model . he says my system is overloaded
A few questions.
Is this a suitable modem for me to use on my Virgin cable broadband? (apparently there are two alternatives types of modem/router)
Is there a better alternative unit ?
Could there be another cause for my problems and if so how do i diagnose them ?
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Feb 5, 2012
I replaced a Dir-655 at a coffee shop, with a new dir-655 a few weeks ago. They keep calling and saying that Windows clients are not working and that Mac clients do.My first thought is that they are overloading the router but I would think that all computers would have problems not just the Windows computers. could the router be so bogged down that it takes to long for DHCP request for windows computers assigning the IP twice?
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Nov 13, 2011
We use MS RRAS services behind a Cisco ASA 5520. In testing the performance I have found that we can only get a little over 2MB of througput when connected to the VPN server over a broadband connection. I have verified that the issue is not the RRAS server itself as I can connect to VPN from the LAN and the througput tests at 300-400MB. I also connected to the LAN directly on the outside of the firewall and only get 4 or 5 MB from there which does not seem right. None of the switches are showing any errors. I believe that I have the passthrough stuff setup as I should. I even went through these steps as recommended by Cisco.
hostname(config)# class-map pptp-port
hostname(config-cmap)# match port tcp eq 1723
hostname(config-cmap)# exit
hostname(config)# policy-map pptp_policy
hostname(config-pmap)# class pptp-port
hostname(config-pmap-c)# inspect pptp
hostname(config-pmap-c)# exit
hostname(config)# service-policy pptp_policy interface outside
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Apr 4, 2011
I am using 2 WAP4410N in bridge mode with WPA2 Security.The bridge seems to be stable but i get poor transfer rates.Distance between devices ~ 8m - nothing between.Wireless networkmode: N-Only, Channel: Auto, Channel Bandwitdh: 40MHz (also tried auto and 20MHz)Firmware 2.0.2.1 because got different problems with 2.0.3.3One side is connected to my LAN other is connected to a notebook.
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Apr 3, 2003
I have a Catalyst 4006 with Supervisor II engine. I have 48 port 10/100/1000 blades installed in it for connection to my servers. I am having a lot of problems with performance when connecting servers that are using 100 MB NICs. The speed of the connection is really bad. I have attempted setting the ports and NICs to 100MB Full duplex instead of auto-detect, but still get the same results.
I also have a 10/100 quad-port card installed in a NetApp filer. All four ports are trunked together and connect to 4 ports in the Catalyst. The ports in the Catalyst are trunked using the Port Channel feature of the CatOS. When I look at the port statistics on 3 of the 4 ports from the quad-card, there are a ton of runts and errors (both transmit and receive). The 4th port is fine, no errors.
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Aug 24, 2012
I recently purchased an EA4500. It started out working really well, but recently I noticed that my speed on my iPhone and iPad has dropped significantly. When I'm in my office where the router is set up, I'm getting around 15 to 20 mb download speed and 5+ upload speed. When I go to my living room about 40 feet away my speed drops to 1mb down and less than 1 up. I expect to see a drop in my performance the further away I get from the router, but this seems really unacceptable to me.
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Oct 9, 2012
The wireless connection barely registers in the Speed Test within Cisco Connect - .56 download, 5.35 upload. A cable connection gives 2.4 download and 5.5 upload. The E900 is not far from the computer with no obstacles between.Is the wireless portion of the E900 set up improperly? Is there anything I can do to improve the wireless performance?
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Jan 1, 2013
I have 2 RV042 routers with identical firmware (1.3.13.02-tm) and settings. One router is a backup that sits in a box, but both experience this problem. The WAN port gives very poor performance most of the time. Download speeds range from normal, 25mb, to less than .5mb. Pings from my command prompt or the routers "Diagnostic" page, even to the cable modem, are almost always above 500ms. However, pings to internal resources are fast, usually under 5ms. If I connect my laptop directly to the cable modem I have no speed issues. The problem occurs whether I use WAN1 or WAN2.
If I restart the router, speeds are fine for a few seconds and then it begins to slow down like someone is turning down a dial. We also regularly experience a complete internet disconnect quite often, and when it happens, the ping results are the same when it comes back up, almost like the router is restarting itself. [code]
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Dec 5, 2011
We have two Cisco AP541N running our wireless network in the office. They're configured with the same SSID, so that people are automatically switched between the two access points depending on their location in the office.
Frequently we are experiencing very poor performance of our wireless connections and it seems to be related to when 4-5 clients are connected to one access point. After restarting it (which also moves the 5 clients to the other access point), the performance problem goes away for a while.
I've upgraded one to firmware version AP541N-K9-2.0(1) (the other is running AP541N-K9-1.8(0)), but it doesn't seem to work.
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May 16, 2013
A few days ago I received my DIR-655 I ordered off Amazon and hooked it up. There were no problems the first day after initial setup. The next day I noticed that I was losing internet connection even though the wifi indicator on my laptop said otherwise. This happens for about 5 minutes at a time and on other devices such as my desktop and my iPad. And I hopped on Call of Duty last night and played a competition with some friends and gave everyone 4bar connection. Later that night, I was playing some more and people that connected to me received 1bar connection and I got that in return on their connection. I feel that the router isn't working with my devices right?
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Jun 15, 2011
We have recently purchased some Cisco 3750x switches and we are getting complaints from users that the performance is poor when both the PC's NIC and switch port are fixed at 100/Full?
There are no errors or collisions on the switch interfaces so there is no obvious problem on the switch. The PC's are standard DELL Optiplex 755/760's
or gx 520's.
Any performance issues when configuring the switchport to 100/FULL?
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Jun 2, 2012
I have upgrade firmware of E1500 to latest release to version 1.0.04 and found out bad performance of the router QoS.
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Sep 28, 2012
I have EA4500 acting as a router on domainless all-Windows network of two XP machines.Unfortunately, EA4500 aggressively grabs the role of the Master Browser (I am talking about Computer Browser Service) on the network (regardless in which order you power the devices up) and then doesn't serve as a working Master Browser - both Windows machines stop listing the network computers in the "Network Neighborhood" and incur massive timeouts when attempting to view the listing.A quick look with 'browstat.exe status' reveals that indeed the router has announced itself as a Master Browser device, but returns errors when you query it.Quite predictably, without the router, both machinces figure out amongst each other who will be the Master Browser and everything works fine. The problems begin only when you add the router to the network.
1) Is there any way to make EA4500 work like a full-blown Master Browser (the one that not only announces itself, but also serves as such)? having a Master Browser integrated in "always-on" router would really improve the predictability of the network.
2) If not, is there any way to disable the Master Browser on EA4500? For now I managed to achieve that by assigning the router to different workgroup name, but this is lame, as I now can't connect a disk storage to the router and use it within the same workgroup.
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Dec 6, 2012
We have a remote site connected to ADSL line with a Cisco 887VA router attached. This has been working fine for the last couple of months. However, recently, the site have started to complain of performance issues (network slow, applications disconnecting, etc)Looking on the router, we can see evidence of packet loss/timeouts from a simple ping to the internet e.g. [code]
However, we have logged the fault with our service provider and they return all line tests as clear but what is particularly strange is that they also report “and the SNR Margins are well within threshold levels (Upstream 11.5 and Downstream 15.0)” which, unless I’m misunderstanding something, seems to be completely different from what the router itself is reporting.Is there a reason why the service provider’s stats for Noise Margin would appear to be so different from what the router is reporting?
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Dec 17, 2011
Im getting really poor performance on my 1841, my intial thoughts was a duplex mismatch however although im getting a few CRC errors (root cause unknown at this point) not enough to suggest that the this is the issue.
Heres the config:
Building configuration.Current configuration : 5274 bytesLast configuration change at 20:31:01 PCTime Sun Dec 18 2011 by admin_xversion 15.1no service padservice tcp-keepalives-inservice tcp-keepalives-outservice timestamps debug datetime msec localtime show-timezoneservice timestamps log datetime msec localtime show-timezoneservice password-encryptionservice sequence-numbers!hostname xxxxxx!boot-start-markerboot-end-marker!!security authentication failure rate 10 log
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Sep 29, 2012
I am backing up massive amounts of data to the cloud. Everytime I do this, the wireless performance on my EA4500 seems to degrade to half its throughput. I am using the 2.4 GHz band.
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Apr 13, 2011
I have a DSL connection with AT&T. It is rated at 6Mbps / 768Kbps, but it closer to 4Mbps / 600Kbps. I have a speed stream 5360 connected to the DIR655. Devices on my network are primarily wireless and include; several laptops, a desktop (which is wireless n), a couple phones / Ipods and a Wii that I watch Netflix on.
I do a lot of Photography and a handful of video work, and backup / share everything online. When I am uploading photos, even with "conserve bandwidth" turned on in the uploading application, browsing sites is very slow, but reasonably functional. If I try to upload a video to YouTube, I can barely manage to do anything else the entire time it is uploading. I've tried to plan and run all my uploads overnight, but then Netflix is unusable when I want to watch it at night.
I've tried several different things, first off, with getting the Wii to function for Netflix, I turned on the QOS engine, for the IP that is assigned to it, and set it to priority 1 for all ports. I also have a entry in the QOS engine for SSH on port 23 with a priority of 10 because of how laggy my SSH sessions are. I do not have any other entries in the QOS engine, is that a problem? Should there be entries that cover other services and assign them a lower priority?
I have enable traffic shaping and Automatic uplink speed turned on. It measured the uplink speed at 695kbps, which is pretty accurate. I have Automatic Classification off, and Dynamic Fragmentation on. WISH is enabled also. I'm set to mixed n, g, and b, I'm not positive, but I do think my older laptops only use wireless b.
Even more importantly than the Netflix would be to allow me to use the Internet in a functional manner while I am uploading, that would solve a lot of problems. It seems that the uploads just hog every last bit of upload bandwidth and don't want to make room for even the small requests that one needs to send to view a web page.
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Jan 1, 2013
We have several of the SG300 Serices switches. We use them to route VLAN traffic to Remote Offices, Internet Connections, and WiFi Access Points.In one remote office we have a SG300-10 setup to route the HQ Network and the remote Office Subnet. The SG300 is Connected to HQ via Fiber and has multiple Tagged VLANs on it. If I do speed tests over the Fiber Link on the Incoming Tagged Netwotk I get Decent performance, 80Mbs. If I switch to a networtk that is not priginating from HQ, and have the SG300-10 route packet, I get dismal performance. 15-20Mbs.
I Fireded up a New SG300-28P FW v1.2.7.76. Added a the HQ VLAN 101 and new VLAN 1025 . Mapped some Tagged and untagged ports for each. Switch was connected to HQ Network as untagged VLAN 101. I put a laptop on an Untagged VLAN 101 port. Ran some tests, cam back with 750-850Mbs. Great. Put the same laptop on a Tagged 101 Port, Configured the NIC for Tagged VLAN 101, Same test, same Speeds, 750-850Mbs.I then Configured laptop for Tagged VLAN 1025. Connected to tagged VLAN 1025 port. Ran speed tests, resuts were 15-20Mbs!
I then Configured laptop for Untagged VLAN 1025. Connected to unagged VLAN 1025 port. Ran speed tests, resuts were 15-20Mbs!It was only the Laptop and the Connection to the HQ net on the SG300-28P. Why is the performance of this unit soooooo poor when it needs to route?Other Switches have FW v1.0.0.27 or FW v1.1.2.0. They have Similar speed issues. All Configured for Layer 3.
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Jan 23, 2012
I am having poor performance through an IPSec VPN between two Cisco ASA 5505s. In researching, I found some discussion about setting the MTU for the VPN. So from one side of the VPN tunnel, I tried pinging a host on the other side specifying the Don't Fragment flag and testing different packet sizes. I found that a size of 1398 is the largest packet size that results in a successful ping.So, I also understand that I should be able to set the MTU to 1426 (1398 + 28 bytes for the IP and ICMP headers). What I'm not 100% clear on is where all I need to set this. Do I set the MTU for the outside interface of the ASA that the VPN tunnel is going through, or do I also need to set the MTU for the inside interface, or on the outside interface and the switch port that the interface is connected to (switch port is set to an MTU of 1500 as well)?My thoughts are that only the outside interface of each ASA needs the lower MTU (currently set at the default of 1500).
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Sep 20, 2012
I have tried all the speed test sites and tried downloads with and without my EA2700. Every test shows about half the perfomance when connected through the router. My speed tests at speedtest.net with a direct connection are in the 21-26Mbps range, the same tests run about a minute later through the EA2700 fall in the 10-12Mbps range with spikes up to 17Mbps.I've reset the router and modem.I've gone back to the 1.0.14.129982 Firmware (which it's currently on)I've set the MTU everywhere from 1400 to 1500 (literally EVERY setting for at least a couple of hours) it is 1492 currently. None of these have worked. In addition, when a large stream starts, such as a Steam download, I will lose ALL connectivity. Going in to Network and Sharing and clicking to connect to the internet restores the connection, no need to reset any hardware (which is odd in itself). I have had MANY routers over the years and I've all but exhausted support with service provider as the connection is solid if I eliminate the router.Main machine is a Windows 7 Home edition Total of 5 machines, 3 of which see regular use All machines go through a Trendnet 16 port switch and performance is the same direct or through the switch I m on Brighthouse in Central Florida and have all but exhausted their support.
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Dec 13, 2012
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May 3, 2013
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I've tried to set on both server and client MTU = 1492 and I've changed firmware from 1.0.3.3 to 1.0.5.1 (I've not tested 1.0.6 because of some posts here regarding udp problems).
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Feb 5, 2011
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Nov 21, 2010
I have purchased two WAP200 units to act as access point and repeater. AP and repeater functionality works fine.
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I'm using the antennas that came with the box and have tried multiple placements both in my house and in other locations. I have also tried changing several of the configurations without any effect on the signal strength. Older D-link and Linksys routers provide good reception to most of my house from the same location.
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Aug 5, 2012
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Jan 3, 2013
Just got a new HD Smart TV and trying to stream Netflix and Youtube. Netflix works decent most of the time, buffering occasionally but Youtube buffers all the time and is not watchable. Using a Netgear WGT624 b/g router located some 60 feet away a half floor upstairs. Internet downstream speed is about 5.5 Mbps on the hard wired main computer and laptops show the same speed when connected wirelessly. Wireless Network Connection Status on a laptop close to the TV show "Very Good to Good" signal strength and Speed at 11 Mbps. Why is the Yotube connection so poor on the TV? The Netflix could be better too. Laptop by the TV streams Neflix and Yotube fine but of course that is not HD. Do I need an upgraded router or powerline network adapter?
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Nov 29, 2011
I have been having considerably slow internet compared to the other guys I live with and decided to investigate. I have run the speedtest.net on a good chunk of their computer and they all get around 40 mb/s while I am getting 2 mb/s. I have figured out that when I go in and change my MAC Address, I am able to get the same speed that they do for a short amount of time, but after a while(I haven't figured out a time interval) my speeds go back to the 2 mb/s. I can then go back in and change the address again and the same thing happens. I thought I might have a virus, but the different scan that I have tried running show nothing and when I do netstat from the command prompt, nothing abnormal shows up.
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Nov 11, 2012
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May 20, 2012
I had an old Belkin wireless USB adapter that I used with it for the first few days, but I got tired of the slow speeds that I had always known to be associated with that card. So today I went and bought a CISCO PLEK400 powerline networking adapater. Brought it home, plugged it in to my router in my living room, plugged it into my PC in my bedroom, gave it a quick little test drive. First I went to speakeasy to test the up/down speed. Never more than 1.5Mbps down/1Mbps up. My laptop, running wirelessly through the same router, generally hits 20Mbps down and ~2Mbps up. So I plugged the ethernet cable into my laptop, to see if maybe it was the network card in my desktop that was faulty. Speakeasy speed test showed 1.5down/1up wired for laptop as well. Pinging google through command prompt, on either laptop OR desktop while wired, nets a ~300ms response time.
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Mar 5, 2013
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Apr 26, 2011
To sum it up the ASA is maxing out at 7MB down on a 25MB connection. The connection was tested with the ASA removed and the connection is fine.
This popped out at me the most but i'm not sure what it means:
12884935775 switch ingress policy drops for eth 0/0
[code]....
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Nov 3, 2011
I have a client using a VOIP service to a third party provider (RingCentral). They are connected via Cable ISP (6mb) to the Internet and now experiencing performance issues with their VOIP service. They indicated that the call can be heard but that there is jitter and choppines in the call and they have to place a regular landline call. Their provider recommended using QOS to improve. I did not see anything straight forward on the ASDM interface to do this and figure it may require command line to accomplish.
They have Cisco IP 303 and 5252G2 phones which connect through an ASA5505 7.2(4) to their provider for service. Apparently the voip app uses the following ports:
UDP
5060-5090
8000-8200
16384-16482
What would be the best solution to improve performance or perhaps traffic shape / priortize traffic to work. I assume this may be happening if there are heavy downloads or activity happening on the network. The ASA5505 is on 7.2(4). Some coded examples for the above info.
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