[comp.protocols.tcp-ip.ibmpc] KA9Q, RIP, IP broadcast to 255 instead of 0

rjberke@skvax1.csc.ti.com (Richard Berke - TI Data Communications) (02/12/91)

From:	SKVAX1::RJBERKE      "Richard Berke - TI Data Communications"  8-FEB-1991 17:35:21.34
Subj:	KA9Q, RIP, IP broadcast to 255 instead of 0

I notice KA9Q (901130) sending his RIPs to IP destination 0's,
rather than the 255's in my IF CONFIG control statement.
I can't seem to get him to use 255.

My IF line:

if config mynet ipaddress 128.247.201.36 netmask 0xffff0000 broadcast 128.247.255.255


I thought that configuration should make KA9Q, when he emits RIPs, send
out for 128.247.255.255.  I have an arp add for that address.

Please advise what I need to correct.

Thanks,
Richard Berke
rjberke@skvax1.csc.ti.com

Texas Instruments
Plano, TX

karn@epic.bellcore.com (Phil R. Karn) (02/12/91)

In article <9102112108.AA28730@tilde>, rjberke@skvax1.csc.ti.com
(Richard Berke - TI Data Communications) writes:
|> I notice KA9Q (901130) sending his RIPs to IP destination 0's,
|> rather than the 255's in my IF CONFIG control statement.
|> I can't seem to get him to use 255.

(blush). Actually, many of the parameters to the ifconfig statement
are not yet implemented; the broadcast address is one of them.

The broadcast address used by RIP is specified in the "rip add"
command;
you also have to make sure that there's an entry in the ARP table
that will map this address to the proper link broadcast address
(i.e., ff:ff:ff:ff:ff:ff for Ethernet).

Someday I'll clean all this stuff up...

Phil