Re: Jumpstart and different networks

From: Casper H.S. Dik (Casper.Dik_at_Sun.COM)
Date: 11/30/03 

Date: 30 Nov 2003 09:59:10 GMT

Darren Dunham <ddunham@redwood.taos.com> writes:

>In comp.unix.solaris Tim Bradshaw <tfb@cley.com> wrote:

>> I think this means that either you need a RARP server and BOOTP on
>> each network, you need to relay this stuff to the other network, or
>> you need to use DHCP and have a DHCP relay. Routers can typically be
>> configured as DHCP relays, as can Sun's DHCP server. Some routers can
>> be configured as BOOTP relays as well (perhaps most). Not sure about
>> RARP though.

>Jumpstart does not use BootP in any way. With recent enough bootproms
>and OSs, you can use DHCP.

Please don't confuse "BOOTP" with "BOOTPARAMS"; BOOTP is the pre-cursor
to DHCP; BOOTPARAMS is the old way in which Sun systems booted using
a SunRPC service. (Both of you are referring to BOOTPARAMS, not BOOTP)

>RARP cannot be routed or "handled" across multiple subnets by a router.
>It isn't an IP packet, and there isn't enough space in the packet for
>the extra information that would be required.

>The RARP daemon appears to require a normal route to a target machine.
>Technically this doesn't have to be necessary, but it's probably a good
>idea since other things wouldn't work later even if the RARP were
>answered.

Indeed, you need stuff on the same subnet.

I've managed in the past through boot and install through routers
using bootparams; however, this was always hit and miss.

Casper 

-- 
Expressed in this posting are my opinions.  They are in no way related
to opinions held by my employer, Sun Microsystems.
Statements on Sun products included here are not gospel and may
be fiction rather than truth.
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