XDMCP - Disabling IP Broadcast Forwarding.

[John Finnigan]

We are experiencing performance problems with Xterms logging into rebooted Hosts.
I have searched the knowledge database, which kindly informs me that IP Broadcast forwarding should be turned off, but doesnt tell me how to check / set this.

Any Ideas??

[Alex Glennie]

Use the following HP-UX (10.20) commands to check/set ip:

1. To check the value in the hp-ux file:
echo ipforwarding?D | adb /hp-ux /dev/kmem

2. To check the value in the running kernel (/dev/kmem):
echo ipforwarding/D | adb /hp-ux /dev/kmem

3. To turn on ip forwarding in hp-ux and the running kernel:
echo "ipforwarding?W 1" | adb -w /hp-ux /dev/kmem
echo "ipforwarding/W 1" | adb -w /hp-ux /dev/kmem

4. To turn off ip forwarding in hp-ux and running kernel:
echo "ipforwarding?W 0" | adb -w /hp-ux /dev/kmem
echo "ipforwarding?W 0" | adb -w /hp-ux /dev/kmem


The HP-UX 11.0 equivalent of check_bcast_addr is the unsupported ndd
tunable, ip_check_subnet_addr. You can display this variable with the
'ndd -h unsupported' command.

To bypass RFC-1122 address checking, set the ip_check_subnet_addr variable
to zero. To make this a permanent setting, include this setting in
the /etc/rc.config.d/nddconf file.

[federico_3]

Alex,
i think you mean /stand/vmunix and not /hp-ux !

regards,

federico

[Alex Glennie]

federico .....

You are right ! Thanks !

[John Finnigan]

Thanks Chaps...

I'll try this out tonight / tommorrow & let u know how I get on..

Cheers