Users Guide

222 Dell PowerConnect 55xx Systems User Guide
The following are examples of these CLI command:
ISATAP Tunnel
To deliver IPv6 addresses in an IPv4 network, a tunneling process must be
defined that encapsulates IPv6 packets in IPv4 packets.
The Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) is an IPv6
transition mechanism that is used to transmit IPv6 packets between
dual-stack nodes (nodes that can accept both IPv4 and IPv6 addresses) on top
of an IPv4 network.
When enabling ISATAP on a tunnel interface, an explicit IPv4 address is
configured as the tunnel source, or an automatic mode exists, where the
lowest IPv4 address is assigned to an IP interface. This source IPv4 address is
used for setting the tunnel interface identifier according to ISATAP
addressing conventions. When a tunnel interface is enabled for ISATAP, the
tunnel source must be set for the interface in order for the interface to
become active.
An ISATAP address is represented using the [64-bit prefix]:0:5EFE:w.x.y.z,
where 5EFE is the ISATAP identifier and w.x.y.z is a public or private IPv4
address. Thus, a Link Local address will be represented as FE80::5EFE:w.x.y.z
show ipv6 route Displays the current state of the IPv6 routing
table.
console(config)# ipv6 default-gateway fe80::abcd
console(config-if)# do show ipv6 route
Codes: L - Local, S - Static, I - ICMP, ND - Router
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The number in the brackets is the metric.
L 3000::/64 is directly connected, VLAN 20 Lifetime Infinite
L 4003::/64 is directly connected, VLAN 20 Lifetime Infinite
L 5003::/64 is directly connected, VLAN 20 Lifetime Infinite
L 6003::/64 is directly connected, VLAN 20 Lifetime Infinite
Table 9-28. IPv6 Default Gateway CLI Commands (Continued)
CLI Command Description