Configuring IPv6
If a new switch becomes the stack master, it recomputes the IPv6 routing tables and distributes them to
the member switches. While the new stack master is being elected and is resetting, the switch stack does
not forward IPv6 packets. The stack MAC address changes, which also changes the IPv6 address. When
you specify the stack IPv6 address with an extended unique identifier (EUI) by using the ipv6 address
ipv6-prefix/prefix length eui-64 interface configuration command, the address is based on the interface
MAC address. See the
page
If you configure the persistent MAC address feature on the stack and the stack master changes, the stack
MAC address does not change for approximately 4 minutes. For more information, see the
Persistent MAC Address" section on page 5-20
These are the functions of IPv6 stack master and members:
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Configuring IPv6
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Catalyst 3750-E and 3560-E Switch Software Configuration Guide
41-10
"Configuring IPv6 Addressing and Enabling IPv6 Routing" section on
41-11.
Stack master:
–
runs IPv6 routing protocols
generates routing tables
–
distributes CEFv6 routing tables to stack members that use dCEFv6
–
runs IPv6 host functionality and IPv6 applications
–
Stack member (must be running the IP services feature set):
receives CEFv6 routing tables from the stack master
–
programs the routes into hardware
–
IPv6 packets are routed in hardware across the stack if the packet does not have exceptions
Note
(IPv6Options) and the switches in the stack have not run out of hardware resources.
flushes the CEFv6 tables on master re-election
–
Default IPv6 Configuration, page 41-11
Configuring IPv6 Addressing and Enabling IPv6 Routing, page 41-11
Configuring Default Router Preference, page 41-13
Configuring IPv4 and IPv6 Protocol Stacks, page 41-14
Configuring DHCP for IPv6 Address Assignment, page 41-15
Configuring IPv6 ICMP Rate Limiting, page 41-19
Configuring CEF and dCEF for IPv6, page 41-19
Configuring Static Routing for IPv6, page 41-20
Configuring RIP for IPv6, page 41-21
Configuring OSPF for IPv6, page 41-22
Configuring EIGRP for IPv6, page 41-24
Configuring HSRP for IPv6, page 41-24
Chapter 41
in
Chapter 5, "Managing Switch Stacks."
Configuring IPv6 Unicast Routing
"Enabling
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