[openib-general] IB Address Translation service

Hal Rosenstock halr at voltaire.com
Sat Mar 5 08:13:39 PST 2005


On Fri, 2005-03-04 at 21:04, Greg Lindahl wrote:
> Now it would be nice for ethernet broadcast packets to just work(tm)
> with IPoIB. "ping -b" is an example of a user-level program that
> generates a broadcast packet.  

Isn't ping -b a broadcast at the IP (ICMP) level which indirectly causes
a broadcast at the link level ? This is different from the arping case
which directly wants to send (and receive) link level broadvcasts from
user space rather than have the kernel do it on it's behalf.

> DHCP clients also generate such packets, and DHCP servers listen for them. Getting a RARP client and
> server to work ought to be the same as a DHCP client and server.

DHCP uses UDP so is similar to ping -b in that regard.

-- Hal




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