Cisco WS-C6506 Software Manual page 714

MSFC Redundancy
Layer 3 Redundancy for a Single Chassis
In a single Catalyst 6500 series chassis, you can have the redundant supervisor engines, each with an
MSFC. You can configure Hot Standby Router Protocol (HSRP) on the MSFCs to provide transparent
default gateway redundancy for the IP hosts in the network. HSRP configuration can coexist with the
IPX and AppleTalk configuration on the same interfaces.
If one MSFC fails, HSRP allows one MSFC (router) to assume the function automatically of the other
MSFC. Combined with the high-availability feature of supervisor engine software release 5.4(1), this
configuration provides an added level of redundancy for your network.
You must configure both MSFCs identically.
Caution
exceptions for Layer 3 redundancy for a single switch chassis.
Table 23-2
Identical Requirements—
Global and Interface Levels
•
•
1. The dynamic and reflexive ACLs, which are based on actual data flow, may be programmed by either MSFC.
2. In addition to defining the same ACLs on both MSFCs, you must also apply the ACLs to the same VLAN interfaces in the
3. The IP or IPX addresses do not have to be identical on both MSFCs, but there must be an IP or IPX address configured on
For information on specifying the alternate configurations for the interface and global level exceptions
that are listed in
The redundant supervisor engines must have identical hardware (MSFC and PFC). See the
and Software Requirements" section on page 23-21
For the MSFC and MSFC2 memory requirements, refer to the Release Notes for MSFC publication at
Note
this URL: http://www.cisco.com/en/US/products/hw/switches/ps708/prod_release_notes_list.html
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
23-22
Single Chassis Layer 3-Redundancy Requirements
Both MSFCs must have the
following:
Same routing protocols
–
Same static routes
–
Same default routes
–
Same policy routes
–
Same VLAN interfaces
–
– Same Cisco IOS ACLs
All interfaces must have the
same administrative status
same direction on both MSFCs.
both MSFCs.
Table 23-2, see the
Table 23-2 summarizes the identical requirements and the
Exceptions—Interface Level
HSRP standby commands
•
IP address commands
•
3
IPX network
•
1, 2
"alt Keyword Usage" section on page
for more information.
Chapter 23 Configuring Redundancy
Exceptions—Global Level
IP default-gateway
•
3
IPX internal-network
•
IPX default-route
•
23-36.
"Hardware
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