I have recently set up a MDS9000 san fabric in two locations connected by DWDM. My DWDM links come up fine but I am looking to test this link before we go live. How to test this?
View 1 RepliesQuestion re: DIR-655; Hardware ver A4; Firmware version 1.32NA
During bandwidth tests to several sites (principally speedtest.net) I get ping times of 10-11 ms, download speeds of 12+ to 17+ mbps but failure on upload tests using my DIR-655.
When I bypass the 655 and test directly with my cable modem, all (including upload) tests work reliably and consistently.
I have swapped the two ethernet cables involved as well as replacing both with new cables but the results are the same (uploads fail with 655 and work without it)
I have seen several postings over the the last year with this same problem but have never seen any comment from D-Link, or a solution from any reader.
Not that it should have any bearing, but I have TA785GE-128M motherboard and am running Windows 7 (patch current) on COMCAST
is this problem acknowledged by D-Link and is there a solution?
I'm used to seeing DWDM and muxes being used in the service provider world, but when and why would an enterprise want to use this kind of gear?The two basically lets you combine streams of signaling from many different physical sources into one media, but can't a VLAN trunk or a routed link, for example, do the same? Sure, they all operate at different layers of the OSI model, but in all cases you're still getting separate streams of data from Point A, putting it all on one wire, and sending it to Point B.
View 8 Replies View RelatedWhat is the difference between DWDM/CWDM and "regular" SFP's? By "regular" I mean Rx and Tx are fixed to specific wavelength. As I have understood, at least Rx of WDM SFP's accepts a range of wavelengths
View 2 Replies View RelatedAre there any plans to allow DWDM SFP+ on new 4500x ? If so, how soon?
View 2 Replies View RelatedI have a WLC5508 working fine right now, using IOS 7.3
When I try to do a Link test on some users to check signal quality, noise, etc... I received the error message below
Region : UnitedKingdom
Model : TD-W8968
Hardware Version : V1
Firmware Version :
ISP :
Another query regarding diagnostic test and Test DNS Root. It always fails why?
Just did a dot11 radio link test on a point to multipoint 1400 series bridges. how to read the results of the test?
View 9 Replies View RelatedRegion : UnitedStates
Model : TD-W8960N
Hardware Version : V3
Firmware Version : 1.4.0 Build 111130 Rel.54317n
ISP : century link
How do I test my routers ddns? My computer went down. So, my adsl ip address changed. I caused the modem/router to reboot. But the new ip wasn't sent to the Host (dyndns.org). I had to update my ip manually on [URL].
Region : Italy
Model : TL-WR740N
Hardware Version : Not Clear
Firmware Version :
ISP : Alice (Telecom)
I bought some days ago Tp-Link Wireless Router (Model TL-WR740N - 150 Mbps - Ver 4.23) but I couldn't install it: when I do Easy Setup Assistant, the network status test always fails because of absence of connectivity. I can see that there are some problems by the lights of the router: the WLAN light switches on, as the WAN light and the LAN light, instead of being flashed. I tried to do the installation without cd but, clicking on 192.168.1.1, I didn't find the page to access to web console but the Telecom page of the status of my connexion (nb: it reports that ethernet is unplugged).
I am trying to test and setup some ACL's on a switch, the current setup is:
Core Switch - HP ProCurve 2610-24-PWR
Edge Switch - HP ProCurve 2510-24
VLANS 5, 10, 15, 20, 25, 30
I want to deny access to VLAN 5 from VLAN 20 which is are client VLAN.
How to test the aaa on cisco asr 1000 ? I wana test some user account to a cisco acs.
View 5 Replies View RelatedIXIA----DUT-----IXIA
| | |
|_______ |________|
DUT has redudant connections to IXIA. Im pumping traffic from IXIA and traffic takes PATH A .. When I shut PATH A, i expect traffic to shift to PATH B within 100ms (example). How do I test this ?
I have an old Pentium 3 PC that I want to test out as a home server. I am thinking of using Linux server is but I don't have any ideas how to do it.
View 4 Replies View RelatedI have upgraded my network service from 2M to 6M per month last week. But the network speed is not so satisfactory. I could hardly feeling its upgrading.Is there any trustful and accurate method or tool to test the network speed?
View 4 Replies View Relatedit seems that if i want to get IBM Cognos 10 BI OLAP Developer certification i have to pass COG-635 exam. it is said exampdf has released the latest COG-635 study guides.
View 1 Replies View RelatedI want to create a network with a bunch of routers and switches to be used as a test network for company employees to remotely login and learn networking.I don't want this network to interfere with the rest of the network in any way.I am basically trying to create a stub network or a passive network!!
View 4 Replies View RelatedAny way to test throughput on a routed SG-300. I tried using iperf with netbook on VLAN1 to netbook on routed interface running @ 100mb. I was getting results as low as 40mb upto 200mb (sometimes even 2gb, I assumed these to be flukes). Since implementing it, the throughtput seems worse, I'm getting between 10 - 40mb of throughput. I have about 30 clients behind it routing across a 100mb leased link. I don't see why the SG300 shouldn't be able to do wire speed routing (upto 100 hosts). How to verify the expected throughput consistently?
View 3 Replies View RelatedI need configuring a newly reinstated PIX515E with IOS 6.3 to test the configuration of a load balancer.I would like to setup with two Inside interfaces (or simply two interfaces) for testing. I just need it to pass traffic (basically HTTP and HTTPS) between these two interfaces without using NAT.The older IOS is causing me some problems. I don't have an outside interface configured for Internet access,but trying to connect via IP address does't work either. I may be able to configure a second DNS server for the 192.168.12.X network for testing purposes if needed. I even tried to set the default route to the Interface of the production ASA's inside interface (3.1), but that did not work either.
View 6 Replies View RelatedI have configured an Cisco 881 router in our lab with netflow commands and pointed to our network monitoring tool and I want to check if the tool can collect valid traffic statistics from this router (eg. utilization). The problem this router has nothing plugged into a production LAN that would potentially generate traffic to measure using this tool.
Is there a way to configure a Cisco router (ex. Cisco 881 router) to artificially generate network traffic to test that I have setup the monitoring tool correct to capture future utilization statistics?
I have 2 CSS, 1 as primary and 2nd as standby. I configured the standby CSS as my old standby CSS box and now wanted to test the faliover. I am not aware of how to test it in. ny how i have cr for that.
View 1 Replies View RelatedI've been having problems downloading full ISO's before they're interrupted. There doesn't seem to be any real rhyme or reason to it. Sometimes a 4.1GB ISO will stop at 2GB, other times at 4.0GB. I realize I could run a ping from the time I walk in until the time I leave, but that seems a bit too archaic of a solution.nfortunately, our CTO believes SNMP is too much of a security risk
View 11 Replies View RelatedI know ping and traceroute are commands that test network connectivity. what about netstat and telnet? can they also test network connectivity?
View 4 Replies View RelatedMy Dell Inspiron Win 7 equipped computer cannot connect to the Internet. I have a DSL router that I can wirelessly connect to, but it says no Internet access. I used the manual Intel Wireless Manual Diagnostic Tools to test my system and failed the ping test. Dialog box says "no response, default gateway,DHCP server" and indicates the ping test failed.I have checked my router and it is working nominally; other laptops in my family have Internet access just fine. My Intel Centrino Wireless N 1030 adapter is working fine. I detect no other hardware problems on my laptop.
View 7 Replies View RelatedI did a network test with Passmarks Performancetest. I'm running a 10/100 network with all devices connecting at 100Mb. On Performancetest there are 2 tests to run for Network speed, TCP and UDP. The TCP speed test came back with an average 62000kbps (7.5Mb), and the UDP was 89000kbps (10.8Mb). As I'm running a 100mb network, shouldn't the results of been higher?
View 3 Replies View RelatedTest a destination port if it blocked or not by my ISP
View 8 Replies View RelatedI am currently using Time Warner Cable as my internet provider and I have been experiencing very slow internet connection speeds for the past few weeks. This has happened across multiple laptops and desktops both wireless and wired connections. I have done a ping and tracert test but am unable to read the results.
View 7 Replies View RelatedI have a cable lan connection for internet.i check speedtest.net for the results and it showed.9mbps download speed and .10 mbps upload speed.but when i download something i only get 0.45 mbps speed.Sometimes i get 9mbps but not often.But speedtest.net always shows my speed to be 9mbps.So that makes me guess , that there is actually 9 mbps available.now how do i utilize it.?
View 8 Replies View Relatedi am using mtnl broadband and modem is sam300ax...internet is connet properly..now i want to conect netgear wireless router(wgr61 v9) sothat i can connect internet on another two pcs.i will attach wifi Dlink adptors in another two pcs..i donot how do this? anybody give me step by step process..
View 1 Replies View RelatedPinging 98.137.149.56 and had 100% packet loss; this was suggested in another thread. LAN connected at 100 Mbps BUT cannot access Internet! Windows XP HP desktop; Belkin N Router; Optimum Cablevision - Modem Scientic Atlanta "Webstar"
I am using my iPhone to access Internet.
I travel a lot and use wifi in a lot of different places (hotels, airports, etc.)My apps don't always work and I suspect that in some instances the broadband provider is blocking some of the ports I need.I don't need a port scanner like NMAP since that scans a target IP for listening ports.What I need is a way to figure out whether some firewall between my PC and the Internet is blocking specific UDP or TCP port ranges.
View 2 Replies View RelatedI have a hp desktop with windows 7.I keep having a problem with my internet connection.I have a new router and is working fine with my laptops.My desktop is 6 months old.someone said it could be a faulty wireless card in the desktop.Is their some way I can test the wireless card before taking it back to the store?The store is an hour and a half away.and if its not the wireless card they will charge me a heavy fee.
View 1 Replies View RelatedI've recently purchased a new modem and router made by net gear I've been able to connect to the internet via laptop, cell phone, etc. but my real problem is that my Xbox will not connect through the net work test when I physically do it myself but if my Xbox is off and I reset the modem /router and then turn on the Xbox it connects me but doesn't allow me to play any games or talk to friends, so back to my first problem I test the internet using the Xbox, it connects to the network but not to internet and trows an error reset modem/router 30sec. ICMP error or MTU error I've browsed online for solutions but none are successful I've changed router settings bought an Ethernet cord bought a second more powerful router from net gear nothing is working, any ideas?
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