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cisco 4503-E and 3 COM 7700 connectivity problem

i have 3 vlans, vlan1 , vlan 10 and vlan 20 with vlan interface for intervlan routing and vtp configrued on my 4503-E switch because i have also two stacked 3750 switch in the network. i connect cisco 4503 switch with 3com 7700 switch using trunk ports. now the problem is that from 3com  7700 switch host are able to ping all 3 vlans but from cisco 4503  vlan 10 and vlan 20 are not able to ping host connected to 3com 7700 switch.

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cisco 4503-E and 3 COM 7700 connectivity problem

Can you post the config from the 4503 and 7700?

also, what device is doing the routing between vlans?

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