
© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Public
BRKARC-3445
57
System High Availability
Cisco Catalyst 4507R-E and 4510R-E
support the use of redundant
supervisors
Dedicated supervisor slots
Supervisor hardware redundancy will
leverage three software mechanisms
to improve network resiliency and
provide for enhanced operational
change processes
SSO—Stateful Switchover
NSF—Non-Stop Forwarding
ISSU—In-Service Software
Upgrade
Stateful Switchover (SSO)
L2 and L4 Protocols
Non-Stop Forwarding
(NSF) L3
In-Service Software
Upgrades (ISSU)
Redundant Supervisors
Redundant Supervisors—SSO, NSF, and ISSU
Comentarios a estos manuales