Using packet papture software like Wireshark is a useful troubleshooting technique that can be used to examine packets and gather details to help find the root of a problem. In my previous post, I talked a little bit about how to use Wireshark and walked through some steps to run a simple packet capture from a PC. This time, I'm going to go a bit deeper into the how to for doing packet captures.
One of the features I've seen in newer small network routers is the inclusion of a packet sniffer/capture/trace tool within the diagnostic menus of the device. Routers I've recently tested with this functionality include the SonicWall TZ190W, D-Link DFLCPG310, and Netgear's newly released FVX538 and FVS336G.
In each case, these devices have the ability to capture packets on a specific WAN port and/or on the LAN interface. Some of these routers have more sophisticated filtering capabilities than the other, but they all seem to have the same basic functionality of capturing packets.
Apposite Technologies has announced the release of the Linktropy Mini, a portable, low cost version of its Linktropy WAN emulator.
The Linktropy Mini emulates link bandwidth, delay, jitter, packet loss, and other basic network impairments on up to 100 Mbps bi-directional network links. The Mini measures only 11" W x 7" D x 1.75" H and weighs 3.5 lbs. making it easy to transport and use.
The Linktropy Mini is available immediately for $1975 MSRP.
Digitimes today reported that Zyxel Communications has filed a complaint against D-Link and Waveplus Technology for switch-related patent infringements. Chip supplier Waveplus is being blamed as the cause of the dispute.
The dispute is over a < $20 D-Link switch that is sold only in Russia and that Zyxel claims is "very similar" to a Zyxel design.
Zyxel said it has not yet decided the amount of monetary damages it will claim and D-Link said that it is "completely protected from any patent controversy" and that no operations should be affected by the dispute.
MoCA chipset manufacturer Entropic today announced that D-Link will have a retail product by the end of Q1.
The D-Link DXN-220 MoCA MediaBridge is an Ethernet to coax MoCA-compliant bridge using Entropic's EN2210 chipset. The announcement didn't quote any bandwidth numbers, but MoCA 1.1 has a PHY (raw) data rate of 270 Mbps. So expect a maximum application (useful) data rate of around half that.
No pricing was announced.
Read the review.
HotBrick Network Solutions recently introduced the VPN 800/2G, a dual WAN router with IPsec endpoint capability.
The router supports 9 load balancing methods and automatic failover on its dual 10/100/1000 Ethernet WAN ports. A built-in 8 port 10/100 plus two 10/100/1000 switch provides LAN client connection.
100 simultaneous IPSec VPN tunnels with DES, 3DES and AES encryption support remote client or gateway-to-gateway connection. HotBrick's standard VPN client has no node license limitation.
Other features include a SPI+NAT firewall, one-to-one NAT and port-based QoS for bandwidth management.
The VPN 800/2G is available immediately at an MSRP of $899.
Powerline networking chipmaker DS2 announced today that it has developed a new powerline technology that operates at a 400Mbps peak data rate.
The new technology is said to be compatible with existing 200 Mbps products from DS2 and will be available sometime in 2009.
Demonstration of the new technology will be featured at an invitation-only launch in New York City next month.
The HomePlug Powerline Alliance today announced its intent to certify IEEE 1901 products. The certification will be based on the HomePlug Alliances recently merged proposal.
The merged proposal [related story] recently submitted by HomePlug and Panasonic to the IEEE P1901 Work Group offers the efficiency of a single MAC and the flexibility to support both the HD-PLC and HomePlug AV PHYs.
It is unclear whether the merged proposal includes interoperability and coexistence with powerline products based on DS2's competing technology. A HomePlug Alliance spokesperson directed a request for clarification of this issue to the chair of the IEEE P 1901 work group, who did not respond.
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