Hi,
The problem is between management interface Nexus 2248 and MDS9148, sometimes there is connection lost between this interfaces. To solve the problem immedialtly, it's necessary to put a PC or reboot Nexus2248. Then if you wait a moment the connexion back again. In attachment, the IOS version :
sh ver
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (c) 2002-2010, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software are covered under the GNU Public
License. A copy of the license is available at
http://www.gnu.org/licenses/gpl.html.
Software
BIOS: version 1.3.0
loader: version N/A
kickstart: version 5.0(2)N1(1)
system: version 5.0(2)N1(1)
power-seq: version v1.2
BIOS compile time: 09/08/09
kickstart image file is: bootflash:/n5000-uk9-kickstart.5.0.2.N1.1.bin
kickstart compile time: 10/15/2010 0:00:00 [10/15/2010 10:00:43]
system image file is: bootflash:/n5000-uk9.5.0.2.N1.1.bin
system compile time: 10/15/2010 0:00:00 [10/15/2010 11:34:05]
Hardware
cisco Nexus5010 Chassis ("20x10GE/Supervisor")
Intel(R) Celeron(R) M CPU with 2073416 kB of memory.
Processor Board ID JAF1434BHBG
Have you seeing this problem ?
Thanks
Regards