Cisco Switches :: SG-200-08 - Poor UDP Speed
May 3, 2013
I'm experiencing poor udp speed on my sg-200-08. I'm running a nfs share on Ubuntu server 12.04 to a Ubuntu 11.10 client connected through udp protocol . If I use an un managed site com (plastic ****) I get about 50MB/s transfers, with sg-200-08 I can't get over 12/13 MBs transfers.
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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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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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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Feb 12, 2013
I have 5x Cisco 2960 and 1x Cisco 2960G. All of them are using IOS Version c2960-lanbasek9-mz.122-55.SE6.bin I'm having poor inbound speed with ALL of the Cisco 2960 (except 2960G) although the outbound speed is normal. The port is 100Mbps Full-Duplex, but the max inbound speed on a single connection is around 35Mbps. With the 2960G, I can get max 1Gbps inbound speed on a single connection.
I checked everything and still not know why the 2960 switches can't get max 100Mbps inbound.
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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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Jan 19, 2013
I just picked up a EA6500 wireless router today and I am a bit disappointed. I paid $199 for this router because I was hoping to take advantage of of fast N speeds and the advanced features it offers.When I first logged in to set up the router, I saw an amber exclamation point with a note that read "Updating Linksys Smart Wi-Fi Service". When I put my password in I was met with a "Unexpected Error" message.Also, the firmware updater doesn't work. Now on to the more bothersome issue. Wireless speed is poor. I replaced a WRT160NL router with this one. On my old router using WPA2-Personal (AES) I would see speeds of ~300 Mbps. On my EA6500, I see 120 Mbps. I have checked and double checked all wireless and security settings and don't see anything that looks wrong.
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Jan 4, 2013
I own a ea4500 wireless router, I have tested the speed at speedtest.net and wirelessly I get around 9 mbps. My speed is 23 mbps when I hard wired the pc. I have check the speed on a tablet ( android ), pc and a mac to about 5 feet away from the router with no walls or anything between the two devices.I have checked all the settings but I don't see anything wrong, I have changed to N mode only to make sure I use top speed.All my devices are able to use N.
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May 31, 2011
Enabling auto detection of the upstream bandwidth in the qos tab results in a significantly lower than normal maximum upload speed? I have the Blast plan from comcast (20/2 sustained; 30/4 with powerboost). Here are the results.
With the Qos OFF:
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Feb 27, 2012
I've been trying to find the answer for this for ages. I'm now hoping a network pro can provide it here.I have two Gigabit switches connected by a single Cat 5e cable of length 10 metres. My servers are on one switch, and clients on the other. We don't seem to get good speed on the network, so I am investigating various issues in turn as I come across them.The Question is: Would I achieve faster packet throughput between switches by filling the empty RJ-45 sockets with additional Cat 5e cables, or will it have no more effect than the single cable there at the moment?
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Feb 24, 2012
I recently finished setting up my home network, here's the setup, modem > Wireless Router (DIR-655) > 1st Switch (ZyXEL GS105B) > hard wires throughout the house (which got messed up by the previous owner of the house) and from those hard wires, in one room I have an E3000 set as Repeater (DD-WRT) which has 1 desktop connected to it through hardwire then in living room I have another switch (ASUS GX-D1081/V2) for HTPC, TV, PS3
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Jan 12, 2011
I bought a new laptop today, unfortunately, it doesnt have a Firewire port and i want to use it for video editing.But i figured no problem really, i'll just capture on my desktop that i have been previously using to edit on, using Premiere pro to edit, but HDVsplit to capture, and then transfer the files over to the laptop using a USB or possibly trying to setup a home network.But when transferring files from the desktop onto the laptop via the router using ethernet cables, the speed is about 250 kb/s and when its the other way around, from the laptop to the desktop, the speed is 10 MB/s! I really need to find away to speed this up as the overall files i want to transfer are over 5GB.You can read a bit more about it here: [URL]
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Oct 30, 2012
We currently have the XG1 through XG4 ports on our SG500X switch setup in a LAG with the Cisco 10G-FiberOptics. Everything is working fine,however in the web UI under Port Management->Port Settings the "Port Speed" is listed as Unknown. All other ports report the speed correctly. We have 2 SG500X switches configured this way and both are reporting the same Uknown speed.
Firmware Version (Active Image): 1.2.7.76 Firmware Version (Non-active): 1.2.0.97
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Jan 24, 2011
Every "once in a while" (about a week with my network load), the SG300 crawls to an almost standstill of all IPv4 activity (haven't got IPv6 enabled here yet, so I can't comment wether this applies to IPv6 as well). It seems pure L2 transmissions is not affected, but L3 definitely is (down to 20mbit as opposed to the 600+ rate I usually get).
Soft-rebooting the switch (via the webgui) useful, and the intervals of the crashes seem related to total bytes transmitted, not time. I have jumbo frames enabled, and disabled flow control on on the switch and all hosts.
Firmware Version is 1.0.0.27, md5 1987292110f5657e74308dde30c03dc4 Boot Version is 1.0.0.4 md5 4c9a0b6a9f1346736646d08ab94ae2ac
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Jul 19, 2012
I have a 100mbps internet connection from my ISP but once the connection hits the ASA the download speed gets reduced to 15mbps. My network is setup as follows: ISP Modem ---- Edge Switch ----- ASA --- Internal Cisco Switches
If I plug my computer into an extra port on the Edge Switch I get speeds around 92mbps with normal traffic still going to the ASA. But when I plug into the ASA and internal switches I have speeds of 15mbps.
I have made sure that duplex/speed match on the links. I have done packet captures and within two minutes I do have several dup acks and retransmissions. The retransmissions don't seem to match the dup acks. (The retransmission is not for the dup ack requested so the dup ack keeps being resent)
The only interface error is on the inside interface which includes 700 overruns in a weeks worth of time.I am not using an IPS/IDS. I do have several vpns on it but was not going through a vpn tunnel. I am also using NAT.I am using an ASA 5510 8.2(1)
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Oct 20, 2011
Ok, so i never had problems with this before until i reformatted my computer. I have used a program called simple port forwarding and i've also manually added the port seeing if theres a difference, but every time i check my port which is 25565 for a minecraft server it says either failed or not open etc.. I checked netstat -an and it showed it was listening to my ip address and port 25565.
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Jul 17, 2012
I have connected 2 SG500x switches using an SFP-H10GB-CU1M SFP+ Copper Cable module. Since the port shows as a 10G port, I would expect the speed to show as 10G as well. However, it shows as "Unknown". This doesn't leave me with confidence that it is being recognized properly. The link is working properly, but I haven't run tests to verify if I'm getting full 10G throughput or not. Shouldn't it show 10G as the link speed?
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Feb 5, 2011
I run a DIR-825 as an access point on my home network and I upgraded the firmware from 2.03Na to 2.05NA and it looks like it was a poor flash. Orange Amber power light, no wireless radios, unable to access it via its configured ip or default (192.168.0.1). It will not respond to pings, give arps, or obviously the web browser session.Is there any way to reflash these things manually or do I have to send it in?
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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.
The issue I am having is extremely poor signal from both units. Even when very close to the WAP200, I get poor signal quality. The range before loosing connection is only a few feet.
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
i have a 541N running the latest firmware 2.0.2.It has 3 SSIDs for the 3 vlans that it has.I have configured b/g/n.The power is fullIt is powered via POE.The end customer tells me that the range it covers is very very small!Comparing to traditional low budget APs the power is very very low.It does not cover 30-40m in free space where other APs do.Do i need to configure something more in the radio settings?
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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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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
went to set up ps3 and see that the wifi signal is particularly bad (30%) for online.There is no possible way of getting the router near the ps3.I am think that a pair of tp-link powerlines may play a role here, but may be mistaken. What are peoples experiences. would something like that increase ps3 signal? would 200mbps or 500mbps be better (they do diffferent models). I understand that it would make the connection for the ps3 wired, but am I right in thinking the laptop would just operate over wifi as it does already?
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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
I recently bought a dlink 825 and it seems right out of the box the wired internet connection seems very poor. Wireless works fine but it on wired the router refuses to download any files larger than 300kb. Images won't load, files won't downloads, etc. I've swapped cables, tried two different computers, hard reset, loaded the 3.01 firmware and nothing seems to work. I went back to my old router and it works fine. I am able to transfer from computer to computer okay with the 825,The cable modem is a SA dpc2100.
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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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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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Jan 17, 2012
I have a D-Link DWA 510 and it's been perfectly fine, no hassles. Until about a week ago. Since then, not a lot has changed in my computer except for a new PSU/CPU and Keyboard and Mouse. Nothing has changed about the router, it's just the card that's messing up.
What I've tried:
Reinstalling the drivers
Updating
Rolling Back
Changing PCI card position
I'm up for trying many things. I just want some reliability until Saturday/Sunday when I buy my new card.
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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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Sep 14, 2011
Am running WIN 7 64 BIT and have today installed a BT Home Hub 3. WiFi signal is very poor. (1 1/2 bars only) Have Belkin Wireless G Card in computer and previously used it with Netgear DG834G router with very good signal strength.Do I now need to disable the Belkin card in order for the BT Hub to produce a decent signal?
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Dec 31, 2012
So recently I've gotten a new laptop, but now when I try to connect to out wireless internet from my room it has an extremely weak signal and will constantly suffer from constant disconnects and spikes in latency. Occasionally it causes web pages to load incorrectly and makes games unplayable when they were fine before and videos will take a long time to load. The new laptop has a different network adapter ( Intel Centrino Advanced-M 6235 ) and has Windows 8 installed instead of Windows 7 like my old laptop had. The problem happened both when using my router at my house and one at my friend's house which uses an entirely different router. The problem seems with my laptop and not specific to any one router.When trying to ping google.com it will usually stay at around 31ms but will occaisonally jump to around something much higher like 300ms or so for a few pings then go back to normal. If trying to do something like playing a game then it can start shooting all the way up to over 1000-2000 and will sometimes just have the request time out. [code]
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