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New Member

Problem with XDCMP and VLAN

Hi,

I am migrating a FDDI bridged network into a routed one, for that a 6509 with sup720 has been installed.

Everything seems to be OK until i tried to browse the XDMCP servers available, none appear (it should list dozens of Unix servers).

I assume that the servers are listening to broadcasts but i am failing to get those broacasts to get from remote VLANs. Only the same segment servers appear on the list. I have tried ip helper address and it does not seem to work.

Any ideas?

2 REPLIES
VIP Purple

Re: Problem with XDCMP and VLAN

Hello,

I think you have to use the interface command:

ip directed-broadcast

on your relevant (VLAN) interfaces.Without that command, directed broadcasts destined for the subnet to which an interface is attached will be dropped, rather than being broadcast.

Regards,

Georg

New Member

Re: Problem with XDCMP and VLAN

Hi,

Tanks for your help.

The problem is solved. I was already using the "ip directed-broadcast" command but by some reason (human error most probably) when I introduced the command "ip helper-address" and "ip forward-protocol xdmcp" it did not enter correctly.

So all it was needed(after many hours) was to re-type the sequence and all went smooth.

Tank you again for your help.

Carlos Oliveira

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