CCS Network Operations has identified a bug in the running version of
cisco router software, IOS 10.3(4).  This bug sporadically causes
entire IPX subnets to vanish from the York Data Network and requires
manual intervention to correct it.  The running S/W load needs to be
updated to a newer version, IOS 10.3(7), that is believed to not have
this problem.

To implement this change, Network Operations will be instituting a
reload of all of the backbone routers beginning at approximately 0600
Wednesday November 8.  This will cause a disruption of the entire York
Data Network for a period of about 5 minutes while the routers
complete their startup.

Well-behaved TCP/IP applications will hang but not abort during this
outage.  Netware connections across subnet boundaries can be expected
to be lost.

Eriks Rugelis
Network Operations
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Eriks Rugelis         York University,
Network Operations    Computing and Communications Services,
                      029 Steacie Science Library, 4700 Keele Street,
                      North York, Ontario, Canada. M3J 1P3
E-Mail: [log in to unmask]                  Ma Bell: +1 416 736 5257 x.22688
                                            FAX: +1 416 736 5830

        --- It's the end of the world as we know it, and I feel fine  ---