high ping latency time differs

Discussion in 'Cisco/Linksys Wireless Routers' started by mike_h, Jan 28, 2005.

  1. mike_h

    mike_h Guest

    With a WRT54G v 2, I got very large differences in the ping latency time o a very high level of latency:

    The network:

    Linux-box -- LAN --- WRT54G ---wlan --- laptop (xpsp2)

    With an open terminal logged in to the WRT54G via ssh I sent some ping to
    the laptop (DELL X300) via WLAN:
    PING ( 56 data bytes
    64 bytes from icmp_seq=0 ttl=128 time=1638.7 ms
    64 bytes from icmp_seq=1 ttl=128 time=643.2 ms
    64 bytes from icmp_seq=2 ttl=128 time=1685.5 ms
    64 bytes from icmp_seq=3 ttl=128 time=690.0 ms
    64 bytes from icmp_seq=4 ttl=128 time=1732.7 ms
    64 bytes from icmp_seq=5 ttl=128 time=737.6 ms
    64 bytes from icmp_seq=6 ttl=128 time=1780.2 ms
    64 bytes from icmp_seq=7 ttl=128 time=784.7 ms
    64 bytes from icmp_seq=8 ttl=128 time=1827.7 ms
    64 bytes from icmp_seq=9 ttl=128 time=830.4 ms

    In principal, there is no difference between the original linksys software and
    other 3 party-software like Alchemy 6r5 or ewrt0.2 -- which I tried as well..

    The distance between laptop and WRT54G is about 2.5 m in one flat room.

    ping latency time on the lan is as expected for 10MBit-lan:
    ~ # ping
    PING ( 56 data bytes
    64 bytes from icmp_seq=0 ttl=64 time=1.7 ms
    64 bytes from icmp_seq=1 ttl=64 time=1.4 ms

    the ping latency time for the WLAN is unaccetable!! -- I expect some ms!

    The WRT54G is reset and parameters have been "factory default"

    my questions are:
    1. any hints what to do?
    2. special configuration of the bridge br0 needed?
    3. any other made similar observations?
    4. what can i improve in the configuration to reduce the latency time?

    thanks for thinking about it

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