Configuration manual

IPv6 Routing Configuration
Fixed Switch Configuration Guide 25-5
Setting Routing General Parameters
IPv6 routing parameters are set in router global configuration mode. Table 25-3 lists the tasks and
commands. Refer to the CLI Reference for your platform for more information about the commands
listed below.
The following example enables unicast routing mode, to allow the switch to route.
C5(su)->router
C5(su)->router>enable
C5su)->router#configure
Enter configuration commands:
C5(su)->router(Config)#ipv6 unicast-routing
Configuring Routing Interfaces
IPv6 Addressing
One or more global unicast IPv6 addresses and a single link-local address can be configured for an
interface using the ipv6 address command in router interface configuration mode.
Link-local addresses are network addresses which are intended only for communications within
one segment of a local network (a link) or a point-to-point connection. They allow addressing
hosts without using a globally-routable address prefix. Routers will not forward packets with link-
local addresses. A link local address must begin with fe80:.
A single link-local address is supported per interface. A link-local address is automatically
generated when IPv6 routing is enabled on an interface.
When you manually configure a global IPv6 unicast address on an interface, you can enter the
complete 128-bit address and prefix, or use the eui64 parameter to configure a global IPv6 address
using an EUI-64 identifier in the low order 64 bits of the address. When using the eui64 parameter,
you specify only the network prefix and length, and the Fixed Switch device generates the low
order 64 bits.
Table 25-3 Setting Routing General Parameters
Task Command(s)
Enable or disable IPv6 forwarding.
Forwarding is enabled by default
ipv6 forwarding
no ipv6 forwarding
Set the value of the hop limit field in IPv6 packets
originated by this device. This value is also placed in
the “Cur Hop Limit” field of router advertisements
generated by this router
ipv6 hop-limit hops
Enable or disable forwarding of IPv6 unicast
datagrams. Disabled by default.
ipv6 unicast-routing
no ipv6 unicast-routing
Display the status of IPv6 forwarding mode and
unicast routing mode.
show ipv6
Note: EUI-64 refers to the IEEE's 64-bit Extended Unique Identifier (EUI-64) format, as specified in
RFC 2373.