ip direct-broadcast

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Jun 11th, 2008
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These is the situation:

-There is a more VLANs in our corporate network and we have need for WOL functionality in network. WOL server is member of one VLANs

-routing between VLANs is performing on router(there are subinterfaces on ethernet interface, one for each VLAN)

How WOL server can wake up PC on another VLAN? I know that the ip direct-broadcast must be enabled for destination subnetwork for magic wol packets. But, where I must type that command, in interface mode configuration for ethernet interface or subinterfaces mode command for VLAN subinterfaces?

Thanks in advice!

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dubrava2003 Wed, 06/11/2008 - 23:35
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there is acl used for enabling magic packets traffic only from wol server.there is config:


access-list 10 permit

And on interface g0/0.4:

ip directed-broadcast 10

but WOL stil does not work :(

Richard Burts Thu, 06/12/2008 - 03:19
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The question about enabling directed broadcast assumes that something will be sending a packet with the subnet broadcast address as the destination address. Is the WOL server sending these directed broadcast packets?

If not then you may need to configure ip helper-address on the router interface where the server is connected to take the local broadcast from the server and forward it to the remote subnet. And you probably need to configure ip forward-protocol on that router interface to identify the protocol port number of the broadcast to forward.




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