Ping through a 3Com 2226 Switch

I have a 3 Com 2226 switch in another building. It is connected by fiber. I can ping the switch its self from the building that I am in, but I cannot ping devices on the other side of the switch in the other building. From the devices in the other building on the other side of the switch I can ping devises in this building. Other communication including VOIP phones are working fine. I have looked in the Web interface of the 2226, but have on found anything that would prevent a ping.
Antivirus is running on the computers that I cannot ping, but those computers have the same settings in the Antivirus software as computers in this building that I can ping.
NLITechAsked:
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from_expConnect With a Mentor Commented:
hm... is it possible, that you have personal firewall configured on some pcs?
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NLITechAuthor Commented:
Also Windows firewall is disabled on the computers that I cannot ping
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from_expCommented:
i suppose you have different vlan configured for management
can do provide me with the information:
what vlans are configured between two 3coms?
what ip subnet you are using for pcs in both buildings and what ips you have for your switches.
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NLITechAuthor Commented:
I just have the defualt vlan, vlan 1. The ip subnet in both buildings is 192.168.0.0 the switch is 192.168.0.155.
Lori
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from_expCommented:
ok, and what about mask for the subnet on your network and for the subnet on the switch?
possibly in some places you have 255.255.255.0 and in some 255.255.0.0
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NLITechAuthor Commented:
Subnet mask on all is 255.255.255.0
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from_expCommented:
when you ping pc on the remote building and get request timeouts, can you check arp -an to check if your pc gets mac of the remote pc you are pinging
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NLITechAuthor Commented:
arp -a does give me the mac address
Lori
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NLITechAuthor Commented:
No, the only firewall on the PC's is Windows and it is off.
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from_expCommented:
please provide ipconfig outputs from pcs in both buildings and also ip settings from both switches
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NLITechAuthor Commented:
I have replaced the switch and still have the same problem. It has to be a firewall or antivirus issue.
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