From: Mark K. Bettinger (c22mkb@eng.delcoelect.com)
Date: Wed Jun 04 2003 - 17:59:53 EDT
We are faced with cross/os issues. Much of our data is served
from HP A500 servers connected to a SAN and protected using
MC/ServiceGuard. When a problem is detected with a server,
the IP associated with an NFS mount point is moved from one
server to another - same IP, different MAC address. When the
switch occurs, the server sends out an arp to notify the switch
that a new MAC address is serving that IP. We have used ethereal
to capture this as well. All affected clients tend to be on
the other side of a Cisco switch (mostly 6509s with a few 6512s).
The servers will respond to both UDP and TCP requests for
NFS version 2 and version 3.
The problem is that when this switch occurs, none of the Sun clients
respond to the IP and NFS services coming from a different server.
The client should not care and should not see that the MAC address
has changed, only that the same IP is serving the same information
via NFS. Most of the clients are running Solaris 2.6 and 2.7.
Soalris 8 is mostly immune but rarely exhibits problems.
Does Sun depend on the MAC address? Is there some way to remove
this dependency? Has anyone else been able to make MC/ServiceGuard
successfully serve data to Sun clients?
Any help and information is appreciated.
--Mark
-- Mark Bettinger (765)451-5176 pager: (765)554-1455 UNIX System Administration (KAT) fax: (765)451-0174 Delphi-Delco Electronics Corporation c22mkb@eng.delcoelect.com Kokomo, IN _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagers
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