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39-8
Cisco Catalyst Switch Module 3110 and 3012 for IBM BladeCenter Software Configuration Guide
OL-12189-01
Chapter 39 Configuring IPv6 Host Functions and Unicast Routing
Understanding IPv6
Figure 39-1 Dual IPv4 and IPv6 Support on an Interface
The switch uses hardware memory to store unicast routes, MAC addresses, access control lists (ACLs),
and other features, and provides the switch database management (SDM) templates to allocate memory
resources depending on how the switch is used. You must use the dual IPv4 and IPv6 template templates
to allocate hardware memory usage to both IPv4and IPv6 protocols. See the “SDM Templates” section
on page 39-13.
EIGRP IPv6
This section applies only to the Catalyst Switch Module 3110.
Enhanced Interior Gateway Routing Protocol (EIGRP) IPv6 is supported. The IPv6 commands duplicate
the functionality of their counterpart commands for IPv4. EIGRP IPv6 can be configured directly on the
interfaces on which it runs and therefore does not require a global IPv6 address.
This example shows the minimum configuration required for EIGRP IPv6:
!
ipv6 unicast-routing enable IPv6 packet forwarding
!
interface e0
ipv6 enable enable IPv6 on the interface (or configure global address)
ipv6 eigrp 1 enable EIGRP IPv6 for AS 1 (Nvgen’s router process)
no shutdown
!
ipv6 router eigrp 1 router process for AS 1
router-id 1.1.1.1 A explicit router id on this IPv6-only node
no shutdown process is not shutdown
You can use this configuration allows you to send hellos to establish adjacencies (on Ethernet 0).
However, to do so, it must also meet the these conditions:
IPv6 unicast packet forwarding is enabled.
IPv6 is enabled by entering the ipv6 enable command on the interface or on a global IPv6 address.
The interface has its line protocol running.
The router process is running.
The router process has a router ID.
EIGRP IPv6 can be configured on an interface. However, after being configured on an interface, it can
start running before any of the EIGRP IPv6 router-mode commands have been executed. This is
undesired, so, by default, EIGRP IPv6 is in a shutdown state. After you configure the router and interface
for EIGRP IPv6, then you can enter the no shutdown command to start the protocol. This ensures that
all router-mode configurations are executed before the protocol starts.
201786
3ffe:yyyy::1
10.1.1.1
IPv6
IPv4