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mudmanc4

Switch problem

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Verizon Corporate Home Page Verizon Central

Test Analysis Information

Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done

running 10s outbound test (client to server) . . . . . 868.93Kb/s

running 10s inbound test (server to client) . . . . . . 5.59Mb/s

------ Client System Details ------

OS data: Name = Windows XP, Architecture = x86, Version = 5.1

Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_06

------ Web100 Detailed Analysis ------

Client Received Window detectd at 0 bytes.

Cable modem/DSL/T1 link found.

Link set to Full Duplex mode

No network congestion discovered.

Good network cable(s) found

Alarm: Duplex mismatch condition found: Host set to Full and Switch set to Half duplexD

Web100 reports the Round trip time = 86.25 msec; the Packet size = 1460 Bytes; and

No packet loss - but packets arrived out-of-order 40.83% of the time

This connection is receiver limited 82.77% of the time.

Increasing the the client's receive buffer (0 KB) will improve performance

This connection is network limited 17.1% of the time.

Web100 reports TCP negotiated the optional Performance Settings to:

RFC 2018 Selective Acknowledgment: ON

RFC 896 Nagle Algorithm: ON

RFC 3168 Explicit Congestion Notification: OFF

RFC 1323 Time Stamping: OFF

RFC 1323 Window Scaling: OFF

Packet size is preserved End-to-End

Server IP addresses are preserved End-to-End

Information: Network Address Translation (NAT) box is modifying the Client's IP address

Server says [xxxxnotxxxx] but Client says [192.168.15.100]

  Close Window >

  Ok ,  notice the  ALARM    , duplex mode. The switch  (EZXS16W) Linksys , is meant to sense full or half , why does this test find this problem and what  if anything can I do ? I've seen this before on tests . Any one?

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my guess is that it is complaining about the fact that you are running a modem, most of which can only do half duplex, into a switch that is running a full duplex..  I wouldnt worry about it to much.. I have never really messed with duplexing but as long as your speeds are ok dont loose sleep over this... I would keep the switch at full duplex so you can send/receive to clients on the network at the same time.

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