Cisco Cisco Nexus 7000 Series Supervisor 1 Module White Paper
© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information.
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local chassis. From the local chassis
perspective, whichever supervisor boots first will become the “In-chassis
Active” supervisor, while the second supervisor will be become the “In-chassis Standby” supervisor. See Figure 14
Figure 14. Virtual Switching System with Quad-Sup Uplink Forwarding
With the In-chassis Standby supervisor fully booted, the uplink ports are fully operational. They can be used as part
of the VSL port-channel interfaces or other connectivity, just like ports on any other line card.
Note: Quad-Sup Uplink Forwarding is supported on Supervisor720-10G-based systems. Quad-Sup Uplink
forwarding is not supported with Sup2T based systems. The Sup2T will support VSS-based supervisor redundancy
forwarding is not supported with Sup2T based systems. The Sup2T will support VSS-based supervisor redundancy
in a future software release.
RPR-WARM Redundancy Mode
The In-chassis Standby supervisor runs a new redu
ndancy mode called “RPR- Warm,” stated “RPR minus Warm”.
The RPR- Warm redundancy mode is only available in the Virtual Switching System.
In addition to fully booting the in-chassis standby supervisor and providing fully operational uplink ports, the RPR-
Warm redundancy mode also provides synchronization of the necessary information to allow the In-chassis
Standby supervisor to reload and take over as the in-chassis active supervisor if needed. The RPR- Warm
redundancy mode synchronizes the following crucial variables and data structures:
●
Startup-config
●
Vlan.dat
●
BOOT ROMMON variable
●
CONFIG_FILE ROMMON variable
●
BOOTLDR ROMMON variable
●
DIAG ROMMON variable
●
SWITCH_NUMBER ROMMON variable
It is important to note that the RPR- Warm redundancy mode is not a stateful redundancy mode, as it applies to the
local chassis. In other words, if the in-chassis active supervisor fails, the In-chassis standby supervisor will detect
the failure and reload the local chassis. Subsequently, the former in-chassis standby supervisor will boot as the in-
chassis active supervisor.