30% throughput on ethernet uk-ireland, 3 carriers
i have recently supplied a 100mb/s ethernet to my customer, between dulin – london. 3 telcos form this circuit end to end. i.e. 3 segements to the circuit. when telcos run ethernet tests the throughput is ok. however on live data ftp tests, the circuit consistently shows througput of c.25%. I have a feeling that [...]
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| January 28, 2008 11:31 PM
Ethernet, Multiple service operators (mso), Network testing, Network traffic analysis
i have recently supplied a 100mb/s ethernet to my customer, between dulin – london. 3 telcos form this circuit end to end. i.e. 3 segements to the circuit. when telcos run ethernet tests the throughput is ok. however on live data ftp tests, the circuit consistently shows througput of c.25%. I have a feeling that [...]
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| January 28, 2008 11:31 PM
Ethernet, Multiple service operators (mso), Network testing, Network traffic analysis
Testing voip network
How do you test bulk traffic over a voip network
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| December 11, 2007 4:39 PM
Network testing, VoIP
How do you test bulk traffic over a voip network
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| December 11, 2007 4:39 PM
Network testing, VoIP
Network diagnostic tool
Can anyone recommend a good network diagnostic tool?
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| December 5, 2007 3:25 PM
Network testing, Networking
Can anyone recommend a good network diagnostic tool?
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| December 5, 2007 3:25 PM
Network testing, Networking
Testing patch panel
Does anyone know how to test a patch panel without using any high-end equipment? I have a small lab in a small office….what should I know to be able to test a 24 port test panel?
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| February 27, 2013 5:52 PM
Network testing, Networking Equipment, Networking hardware, Networking Products, SDN
Does anyone know how to test a patch panel without using any high-end equipment? I have a small lab in a small office….what should I know to be able to test a 24 port test panel?
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| February 27, 2013 5:52 PM
Network testing, Networking Equipment, Networking hardware, Networking Products, SDN
how to test a 10/100 mbps ethernet swtich
I have a 10/100 Mbps ethernet switch which is claimed to not function properly. So is et up a LAN using the switch, issgned IP address to 2 computer, connected them to the swtich and started pinging one computer from the other. So, now , after pinging PC1 from PC2, all the ports on the [...]
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| July 23, 2010 5:49 PM
Network testing, Networking, Switches, TCP
I have a 10/100 Mbps ethernet switch which is claimed to not function properly. So is et up a LAN using the switch, issgned IP address to 2 computer, connected them to the swtich and started pinging one computer from the other. So, now , after pinging PC1 from PC2, all the ports on the [...]
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| July 23, 2010 5:49 PM
Network testing, Networking, Switches, TCP
How can I take a log file from command prompt?
Hello I need to ping an address during the night until morning for checking connection in command prompt. I also want to make a log file from the results of the pings. How can I do that? I resized the size of buffers to maximum but maybe it is not too much or maybe during [...]
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| May 8, 2013 12:32 PM
Network testing, Networking, Ping
Hello I need to ping an address during the night until morning for checking connection in command prompt. I also want to make a log file from the results of the pings. How can I do that? I resized the size of buffers to maximum but maybe it is not too much or maybe during [...]
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| May 8, 2013 12:32 PM
Network testing, Networking, Ping
PCs disconnecting from router
PCs keep randomly disconnecting from Internet. When one PC disconnects, the others remain connected. I investigated when a PC’s Internet stopped working. NIC’s LAN status showed all was well. I tried IPCONFIG /ALL, it appeared OK with IP Address, Default Gateway etc. I tried logging into router but could not reach it, so it’s clearly [...]
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| October 5, 2007 12:53 PM
Network connectivity, Network testing, Networking, Routers
PCs keep randomly disconnecting from Internet. When one PC disconnects, the others remain connected. I investigated when a PC’s Internet stopped working. NIC’s LAN status showed all was well. I tried IPCONFIG /ALL, it appeared OK with IP Address, Default Gateway etc. I tried logging into router but could not reach it, so it’s clearly [...]
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| October 5, 2007 12:53 PM
Network connectivity, Network testing, Networking, Routers
TCP Retransmissions b/c of Checksum Incorrect
We have a problem where some users will complain of slow application response time (on the LAN) from our ERP server, but others will be fine. After many hours of troublshooting I’ve discovered the following: - Packet Sniff’s of affected users shows TCP Retransmissions because the Checksum is Incorrect from the server. - Replacing the [...]
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| February 4, 2009 3:55 PM
Bandwidth, Cabling, Cisco, Ethernet, Fault isolation, Hubs, IPv4, NetBIOS, Network protocols, Network testing, Networking, Protocol analysis, Routers, Switches, TCP, TCP/IP
We have a problem where some users will complain of slow application response time (on the LAN) from our ERP server, but others will be fine. After many hours of troublshooting I’ve discovered the following: - Packet Sniff’s of affected users shows TCP Retransmissions because the Checksum is Incorrect from the server. - Replacing the [...]
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| February 4, 2009 3:55 PM
Bandwidth, Cabling, Cisco, Ethernet, Fault isolation, Hubs, IPv4, NetBIOS, Network protocols, Network testing, Networking, Protocol analysis, Routers, Switches, TCP, TCP/IP
Dell Optiplex GX520 hibernation/sleep mode issues
Hello, We have several Dell Optiplex GX520′s on the network running Windows XP pro. They randomly fall into sleep mode. Moving the mouse will not wake them – you have to push the power button to get them out of sleep mode. Also we are not able to remotely wake them to do patch updates [...]
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| November 22, 2009 3:45 PM
Availability, Bandwidth, Cabling, DataCenter, Dell, Desktops, DHCP, DNS, Ethernet, Fault isolation, FDDI, Frame Relay, H.323, Hardware, Hubs, Interoperability, IPv4, LDAP, Management, Microprocessors, Microsoft Office, Microsoft Windows, MPLS, NetBIOS, Network applications management, Network management software, Network monitoring, Network protocols, Network testing, Networking, Networking services, NIC, OS, Patch management, Protocol analysis, Remote management, Routers, Security, Servers, SIP, Software, SQL Server, Switches, TCP, Tech support
Hello, We have several Dell Optiplex GX520′s on the network running Windows XP pro. They randomly fall into sleep mode. Moving the mouse will not wake them – you have to push the power button to get them out of sleep mode. Also we are not able to remotely wake them to do patch updates [...]
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| November 22, 2009 3:45 PM
Availability, Bandwidth, Cabling, DataCenter, Dell, Desktops, DHCP, DNS, Ethernet, Fault isolation, FDDI, Frame Relay, H.323, Hardware, Hubs, Interoperability, IPv4, LDAP, Management, Microprocessors, Microsoft Office, Microsoft Windows, MPLS, NetBIOS, Network applications management, Network management software, Network monitoring, Network protocols, Network testing, Networking, Networking services, NIC, OS, Patch management, Protocol analysis, Remote management, Routers, Security, Servers, SIP, Software, SQL Server, Switches, TCP, Tech support
Can’t get DHCP to give addresses
For the life of me can’t seem to setup my server. I have 2 Nics for extra security and what is recommended for Remote Access. This worked with SBS but I just installed windows 2003 server and want to setup remote access server and exchange 2007 I have the external card: 192.168.1.5 IP 255.255.255.0 Subnet [...]
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| June 26, 2007 10:51 AM
Desktops, DHCP, DNS, Management, Microsoft Windows, Network testing, Networking services, OS, Ping, Security, Servers, SQL Server, TCP
For the life of me can’t seem to setup my server. I have 2 Nics for extra security and what is recommended for Remote Access. This worked with SBS but I just installed windows 2003 server and want to setup remote access server and exchange 2007 I have the external card: 192.168.1.5 IP 255.255.255.0 Subnet [...]
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| June 26, 2007 10:51 AM
Desktops, DHCP, DNS, Management, Microsoft Windows, Network testing, Networking services, OS, Ping, Security, Servers, SQL Server, TCP
Messaging Network Alerts / Disruptions
Hi All, Im looking for your thoughts opinions on network messaging alerts for disruptions etc i.e. We have a unix system that interfaces with a windows client and usually once a week when someone stuffs up we need to do a restore which involves getting everybody out of the system who is in “maintenance”. Generally [...]
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| April 12, 2007 10:32 PM
Network monitoring, Network testing, Networking, Remote management
Hi All, Im looking for your thoughts opinions on network messaging alerts for disruptions etc i.e. We have a unix system that interfaces with a windows client and usually once a week when someone stuffs up we need to do a restore which involves getting everybody out of the system who is in “maintenance”. Generally [...]
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| April 12, 2007 10:32 PM
Network monitoring, Network testing, Networking, Remote management
Discover Network Devices
I’m new to this enterprise network. How can I determine all of the devices connected to my network. Unfortuantley I’m the only IT guy and just came aboard so I’m very unfamiliar with the network setup and am trying to find the address of a wireless access point so I can login to it and [...]
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| February 13, 2007 11:30 AM
Network monitoring, Network testing, Networking
I’m new to this enterprise network. How can I determine all of the devices connected to my network. Unfortuantley I’m the only IT guy and just came aboard so I’m very unfamiliar with the network setup and am trying to find the address of a wireless access point so I can login to it and [...]
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| February 13, 2007 11:30 AM
Network monitoring, Network testing, Networking
Routing Between Subnets and between networks
1.I have two separe networks 192.168.0.0 and 192.168.1.0 ,they r physicall connected. What should i configure and where to configure so that host of each network can connect to other host in other network. 2.I have two separe Subnets(after subnetting a class B network),they r physicall connected. What should i configure and where to configure [...]
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| January 10, 2007 4:12 AM
3Com, Active Directory, Availability, Bandwidth, Benchmarking, Bind, Cabling, Cisco, DHCP, DNS, Ethernet, Fault isolation, FDDI, Frame Relay, General Directories, H.323, Hardware, Hewlett-Packard, Hubs, IPv4, IPv6, LDAP, Lotus Domino, Lucent, Microsoft Windows, MPLS, NetBIOS, Network applications management, Network management software, Network monitoring, Network protocols, Network testing, Networking, Networking services, NFS, Nortel, Performance management, Ping, Protocol analysis, Remote management, Routers, SIP, Switches, TCP, WINS
1.I have two separe networks 192.168.0.0 and 192.168.1.0 ,they r physicall connected. What should i configure and where to configure so that host of each network can connect to other host in other network. 2.I have two separe Subnets(after subnetting a class B network),they r physicall connected. What should i configure and where to configure [...]
Answer Question
| January 10, 2007 4:12 AM
3Com, Active Directory, Availability, Bandwidth, Benchmarking, Bind, Cabling, Cisco, DHCP, DNS, Ethernet, Fault isolation, FDDI, Frame Relay, General Directories, H.323, Hardware, Hewlett-Packard, Hubs, IPv4, IPv6, LDAP, Lotus Domino, Lucent, Microsoft Windows, MPLS, NetBIOS, Network applications management, Network management software, Network monitoring, Network protocols, Network testing, Networking, Networking services, NFS, Nortel, Performance management, Ping, Protocol analysis, Remote management, Routers, SIP, Switches, TCP, WINS
odd NIC problem
Howdy all… I have a win2k3 member server with 2 onboard Intel PRO lan connections. One is 100mb the other 1000mb. On the 100mb connection, I can set either a DHCP or Static TCP address and it works fine. On the 1000mb connection, it works fine on DHCP, but absolutely refuses to connect with a [...]
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| October 28, 2006 5:47 PM
Active Directory, Availability, Bind, Cabling, DataCenter, Desktops, DHCP, DNS, Ethernet, Fault isolation, Hardware, Hewlett-Packard Application Server, Hubs, Interoperability, IPv4, IPv6, LDAP, Management, Microsoft Internet Information Server, Microsoft Windows, NetBIOS, Network management software, Network protocols, Network testing, Networking, Networking services, NIC, OS, Protocol analysis, Routers, Security, Servers, Software, SQL Server, Switches, TCP, Tech support, WINS
Howdy all… I have a win2k3 member server with 2 onboard Intel PRO lan connections. One is 100mb the other 1000mb. On the 100mb connection, I can set either a DHCP or Static TCP address and it works fine. On the 1000mb connection, it works fine on DHCP, but absolutely refuses to connect with a [...]
Answer Question
| October 28, 2006 5:47 PM
Active Directory, Availability, Bind, Cabling, DataCenter, Desktops, DHCP, DNS, Ethernet, Fault isolation, Hardware, Hewlett-Packard Application Server, Hubs, Interoperability, IPv4, IPv6, LDAP, Management, Microsoft Internet Information Server, Microsoft Windows, NetBIOS, Network management software, Network protocols, Network testing, Networking, Networking services, NIC, OS, Protocol analysis, Routers, Security, Servers, Software, SQL Server, Switches, TCP, Tech support, WINS
Network Monitoring tool
Hi I am new to network monitoring. I am looking for pure software based network monitoring/analyzer/traffic generator application that will support 10, 100 and 1G ethernet interface. The application need to run on a laptop sothat when a tech goes out he will be able look at the network from the far end he is [...]
Answer Question
| October 28, 2010 2:51 PM
Availability, Bandwidth, Network management software, Network monitoring, Network testing, Networking, Performance management, Protocol analysis, Remote management
Hi I am new to network monitoring. I am looking for pure software based network monitoring/analyzer/traffic generator application that will support 10, 100 and 1G ethernet interface. The application need to run on a laptop sothat when a tech goes out he will be able look at the network from the far end he is [...]
Answer Question
| October 28, 2010 2:51 PM
Availability, Bandwidth, Network management software, Network monitoring, Network testing, Networking, Performance management, Protocol analysis, Remote management
Monitoring the Network
Hi, I have multiple remote sites. I would like to monitor the network and analyze the traffic and its performance in general. For example, how the bandwidth is consumed, if certain activities are unnecessary and how to improve the networks performance by blocking through the firewall like peer-to-peer applications, etc. I am using check point [...]
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| October 24, 2008 12:51 AM
3Com, Availability, Bandwidth, Benchmarking, Cisco, Data analysis, Fault isolation, Firewalls, Forensics, Foundry, Incident response, Intrusion management, Network applications management, Network management software, Network monitoring, Network security, Network testing, Networking, Performance management, Protocol analysis, Remote management, Security, VPN, Wireless
Hi, I have multiple remote sites. I would like to monitor the network and analyze the traffic and its performance in general. For example, how the bandwidth is consumed, if certain activities are unnecessary and how to improve the networks performance by blocking through the firewall like peer-to-peer applications, etc. I am using check point [...]
Answer Question
| October 24, 2008 12:51 AM
3Com, Availability, Bandwidth, Benchmarking, Cisco, Data analysis, Fault isolation, Firewalls, Forensics, Foundry, Incident response, Intrusion management, Network applications management, Network management software, Network monitoring, Network security, Network testing, Networking, Performance management, Protocol analysis, Remote management, Security, VPN, Wireless
Software based WIN Simulation
Hi, I need to test out an application over WAN. The testing includes the response time with different delays and bandwidth requirements. Is there any piece of software (preferably opensource/freeware)which can simulate the WAN for me? The idea is to install two NICs in the Windows/Linux machine, put the software on and adjust delay and [...]
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| August 17, 2009 2:30 AM
Availability, Bandwidth, Benchmarking, Cabling, Cisco, Data analysis, Desktops, Development, Fault isolation, Foundry, Hardware, Hubs, Linux, Management, Microsoft Windows, Network applications management, Network management software, Network monitoring, Network testing, Networking, Nortel, Oracle, OS, Performance management, Protocol analysis, Remote management, Routers, SAP, Security, Servers, Software testing, SQL Server, Switches
Hi, I need to test out an application over WAN. The testing includes the response time with different delays and bandwidth requirements. Is there any piece of software (preferably opensource/freeware)which can simulate the WAN for me? The idea is to install two NICs in the Windows/Linux machine, put the software on and adjust delay and [...]
Answer Question
| August 17, 2009 2:30 AM
Availability, Bandwidth, Benchmarking, Cabling, Cisco, Data analysis, Desktops, Development, Fault isolation, Foundry, Hardware, Hubs, Linux, Management, Microsoft Windows, Network applications management, Network management software, Network monitoring, Network testing, Networking, Nortel, Oracle, OS, Performance management, Protocol analysis, Remote management, Routers, SAP, Security, Servers, Software testing, SQL Server, Switches
802.11 vs 802.16
I have a small co. with a point to point wireless grid. I handle off site monitoring of gas nad oil flow. I have been overlaping my grid with new locations, and more to come. So I have been looking into new wireless Sys. I have made the choice to use All-In-One?360 Multi-Band/Multi-Mode Antenna WiMAX [...]
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| August 16, 2006 8:30 PM
Arrays, Availability, Bandwidth, Billing and customer care, Billing Support Systems, Budgeting, Cabling, Compliance, CRM, DataCenter, Development, DHCP, DNS, Ethernet, Frame Relay, Hardware, Hubs, Laws, Network applications management, Network management software, Network protocols, Network testing, Networking, Networking services, Outsourcing, Project management, Regulations, ROI & cost justification, Routers, Servers, standards, Storage servers, Switches, Vendors, VoIP, Web services, Web Services Standards, Wireless
I have a small co. with a point to point wireless grid. I handle off site monitoring of gas nad oil flow. I have been overlaping my grid with new locations, and more to come. So I have been looking into new wireless Sys. I have made the choice to use All-In-One?360 Multi-Band/Multi-Mode Antenna WiMAX [...]
Answer Question
| August 16, 2006 8:30 PM
Arrays, Availability, Bandwidth, Billing and customer care, Billing Support Systems, Budgeting, Cabling, Compliance, CRM, DataCenter, Development, DHCP, DNS, Ethernet, Frame Relay, Hardware, Hubs, Laws, Network applications management, Network management software, Network protocols, Network testing, Networking, Networking services, Outsourcing, Project management, Regulations, ROI & cost justification, Routers, Servers, standards, Storage servers, Switches, Vendors, VoIP, Web services, Web Services Standards, Wireless
Installing Printers Based on Active Directory Group
Hi All, I’m looking to install all my printers based on security groups within active directory I was planning on using the script below: *** START SCRIPT PRINTERS.VBS *** Const IT_GROUP = “IT” Set WshShell = WScript.CreateObject(“WScript.Shell”) Set WshNetwork = CreateObject(“WScript.Network”) Set ADSysInfo = CreateObject(“ADSystemInfo”) Set CurrentUser = GetObject(“LDAP://” & ADSysinfo.UserName) strGroups = LCase(Join(CurrentUser.MemberOf)) ON [...]
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| July 19, 2006 3:13 AM
DataCenter, Development, Hardware, Help Desk, Microsoft Windows, Network testing, Networking, Remote management, Software, Tech support
Hi All, I’m looking to install all my printers based on security groups within active directory I was planning on using the script below: *** START SCRIPT PRINTERS.VBS *** Const IT_GROUP = “IT” Set WshShell = WScript.CreateObject(“WScript.Shell”) Set WshNetwork = CreateObject(“WScript.Network”) Set ADSysInfo = CreateObject(“ADSystemInfo”) Set CurrentUser = GetObject(“LDAP://” & ADSysinfo.UserName) strGroups = LCase(Join(CurrentUser.MemberOf)) ON [...]
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| July 19, 2006 3:13 AM
DataCenter, Development, Hardware, Help Desk, Microsoft Windows, Network testing, Networking, Remote management, Software, Tech support
Unable to detect a parity error with Windows SDK on a PCI serial card
We are using a 9-bit protocol which sometimes sends a mark state and sometimes sends a space stage. When a space state is sent we want to be able to get a parity error in SDK. We can see the parity error in the hardware register but we want to be able to see the [...]
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| June 6, 2006 2:26 PM
Data warehousing applications, DataCenter, Development, Microsoft Windows, Network applications management, Network management software, Network protocols, Network testing, Networking, Performance management, Protocol analysis, standards, TCP
We are using a 9-bit protocol which sometimes sends a mark state and sometimes sends a space stage. When a space state is sent we want to be able to get a parity error in SDK. We can see the parity error in the hardware register but we want to be able to see the [...]
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| June 6, 2006 2:26 PM
Data warehousing applications, DataCenter, Development, Microsoft Windows, Network applications management, Network management software, Network protocols, Network testing, Networking, Performance management, Protocol analysis, standards, TCP
