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TFGreen

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Can ping from Switch but not from PC

running into a current problem where my 10+ years of routing and switching experience is drawing a major blank (embarassed).

i have an HP procurve environment comprised of a core with a highly subnetted 192.168.x.x/24

I have a need to connect us up to a different network made up of a bunch or extreme switches on a 172.16.101.x/24 network for switch management on vlan 400.

I have been able to trunk vlan 400 from the hp to the extreme network.

From my core switch (or any switch that has vlan 400 on it) I can ping any switch address on the 172.16.101.x network so I know i have vlan 400 passed all the way through to the extreme network

From my pc I can not ping any of the 172.16.101.x switch addresses

What stupidly obvious thing here am I drawing a blank on.

Thanks in advance.
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Alex
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Windows firewall? Leave the service running but disable it on your lan card, just to rule it out
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TFGreen

ASKER

thank you - windows firewall is disabled by default
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ASKER

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ASKER CERTIFIED SOLUTION
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Gammelgaard
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ASKER

But if any HP switch on vlan 400 can ping any extreme switch on vlan 400 on the other network would that really be in play?
Well, the traceroute will tell you.. Do one from your pc and one from the Core router and compare
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ASKER

trace route from core and pc attached - core is immedeate and pc never makes it

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The routing device handling the return packet needs to know of your 192.168.x.x net
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ASKER

so the extreme core would need a route in it to point back to the 192.168 network?
That's my best bet
That's my best bet
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ASKER

you might be onto something - I could not ping the HP network from the extreme until I just added this route into the extreme network and not the extreme can ping the HP network - but still can't ping the extreme net from a pc yet

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Put a route for extreme net into your own core - also check the ACLs, if any
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ASKER

all fixed - thank you
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