Getting inconsistent ping reply from 2 VLAN join together

Posted on 2007-04-02
Medium Priority
Last Modified: 2008-12-06
I have 2 network segment and that has 2 vlan. Both vlan are join together. When I ping from vlan, I kept getting inconsistent reply like below:-

C:\Documents and Settings>ping

Pinging with 32 bytes of data:

Reply from bytes=32 time=2ms TTL=99
Reply from bytes=32 time=4ms TTL=99
Reply from bytes=32 time=3ms TTL=99
Reply from bytes=32 time=5ms TTL=99

Ping statistics for
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 2ms, Maximum = 5ms, Average = 3ms

Please advise what is the problem.

Question by:ghgan
LVL 50

Expert Comment

by:Don Johnston
ID: 18835570
Four pings sent, four replies received. 2-5ms response time.

I don't see the problem.
LVL 79

Expert Comment

ID: 18836254
Ditto. I don't see any inconsistencies.
Try running an extended ping, like 100 pings, and see what the range of response times is then.

>Both vlan are join together
Can you explain how? What kind of switches, what are you using for L3 routing between the two vlans?

Author Comment

ID: 18836822
The problem is I am getting different ip addresses instead of the standard reply
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LVL 79

Expert Comment

ID: 18836886
D'oh! I didn't even see that. Same question, how do you have these two networks/vlans connected? This looks like proxy arp replies..


Author Comment

ID: 19968697
The problem had been solved, because some network card are 10baseT are not able to auto negotiate to 10mb full duplex and some faulty switch had been replaced.

Admin, please closed this question

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