Cisco Cisco Nexus 7000 Series Supervisor 1 Module Libro bianco
© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information.
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Compiled Thu 31-May-07 02:23 by kchristi
BOOT = sup-bootdisk:s72033-adventerprisek9_wan_dbg-vz.SIERRA_INTEG_070530,1;
CONFIG_FILE =
BOOTLDR =
Configuration register = 0x2102
Fabric State = ACTIVE
Control Plane State = ACTIVE
Switch 2 Slot 1 Processor Information :
-----------------------------------------------
Current Software state = STANDBY HOT (switchover target)
Uptime in current state = 1 day, 19 hours, 30 minutes
Image Version = Cisco IOS Software, s72033_rp Software (s72033_rp-
ADVENTERPRISEK9_WAN_DBG-VM), Version 12.2(SIERRA_INTEG_070530) INTERIM SOFTWARE
ADVENTERPRISEK9_WAN_DBG-VM), Version 12.2(SIERRA_INTEG_070530) INTERIM SOFTWARE
Synced to V122_32_8_11, 12.2(32.8.11)SR on rainier, Weekly 12.2(32.8.11)SX85
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 31-May-07 02:23 by kchristi
BOOT = sup-bootdisk:s72033-adventerprisek9_wan_dbg-vz.SIERRA_INTEG_070530,1;
CONFIG_FILE =
BOOTLDR =
Configuration register = 0x2102
Fabric State = ACTIVE
Control Plane State = STANDBY
As this output indicates, if a failure occurs in the active supervisor engine or the active virtual switch, a SSO
switchover is invoked, and the hot-standby supervisor engine in Switch 2 assumes the role as the active supervisor
engine for the Cisco Virtual Switching System. This switchover should take approximately 50 ms.
Intrachassis Availability
The initial release of the Cisco Virtual Switching System supports only a single supervisor per chassis. If a second,
or redundant, supervisor is installed in an individual chassis, the redundant supervisor will not fully boot, and will
stop the boot process at the ROMMON stage. In this configuration, any device connected to the chassis in a
single-homed, or single-attach, manner must rely on the availability of the single supervisor. Therefore, the
recommendation for connecting to the VSS is to always dual-attach devices.
As a result of the single supervisor per chassis support, the recovery period for replacing a failed supervisor
module is undeterministic in that the recover process requires manual intervention in order to install and initialize a
new supervisor in the chassis.
Beginning in the 12.2(33)SXI4 software release, Quad-Sup Uplink Forwarding is supported. This allows for a
redundant supervisor to fully boot Cisco IOS, thereby providing a deterministic recovery option for redundant
supervisors in a VSS chassis.
Quad-Sup Uplink Forwarding
Quad-Sup Uplink Forwarding is a supervisor redundancy feature developed just for the Virtual Switching System.
This feature allows the In-chassis standby supervisor to fully boot Cisco IOS and provide full functionality of its
uplink ports. In addition, the supervisor will perform some basic synchronization with the Active supervisor in the