Cisco WS-C6506 User Manual

23-50
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 23 Configuring Redundancy
MSFC Redundancy
These sections describe how to configure the redundant MSFCs with one MSFC active and the other
MSFC in ROM-monitor mode:
• Hardware and Software Requirements, page 23-50
• Manual-Mode MSFC Redundancy Guidelines, page 23-50
• Accessing the Standby MSFC, page 23-51
• Manually Booting the MSFC, page 23-51
• Setting the MSFC Configuration Register, page 23-52
• MSFC Recovery Procedures, page 23-52
Hardware and Software Requirements
To configure Layer 3 redundancy, you must have at least one of the following configurations:
• A single chassis with two identical supervisor engine daughter card configurations:
– Supervisor Engine 1 with Policy Feature Card (PFC) and MSFC or MSFC2 (both supervisor
engines must have the same type of MSFC)
– Supervisor Engine 2 with PFC2 and MSFC2
• Two chassis with a supervisor engine in each—You must have at least one supervisor engine in each
chassis. Each supervisor engine must be equipped with a PFC and an MSFC.
• Manual-mode MSFC redundancy requires the following software:
– Supervisor engine software release 6.1(3) or later releases and Cisco IOS Release 12.1(7)E or
later releases
– Supervisor engine software release 5.5.8 or later releases and Cisco IOS Release 12.1(7a)E1 or
later releases
Note Each MSFC must run the same release of Cisco IOS software.
Manual-Mode MSFC Redundancy Guidelines
This section describes the guidelines for configuring the manual-mode MSFC redundancy:
• Because the MSFC switchover is manual, we recommend that you have this feature only in
environments where the externally redundant routers are present and where either HSRP is used or
some form of gateway discovery is implemented on the hosts.
• Ensure that the configuration register on the active MSFC (MSFC-15) is set to 0x2102 and that the
configuration register on the MSFC in ROM-monitor mode (MSFC-16) is set to 0x0. This setting
prevents both MSFCs from becoming active at the same time and allows the active MSFC to come
online after a reset. See the “Setting the MSFC Configuration Register” section on page 23-52 for
details on setting the configuration register.
Note Setting both MSFCs to 0x0 is a supported option but requires user intervention if the switch
is reset.

Cisco WS-C6506 Specifications

General

Brand	Cisco
Model	WS-C6506
Category	Switch
Language	English