Cisco Cisco 1700 2600 3600 3700 Series VPN Module Libro blanco

Page 29 of 55

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

Synced to V122_32_8_11, 12.2(32.8.11)SR on rainier, Weekly 12.2(32.8.11)SX85

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