Router Interfaces; Specifying Ipv6 Addresses - Extreme Networks ExtremeWare XOS Guide Manual

IPv6 Unicast Routing

Router Interfaces

The routing software and hardware routes IPv6 traffic between router interfaces. A router interface is
either a virtual LAN (VLAN) that has an IP address assigned to it, or, new for IPv6, a layer 3 tunnel.
As you create VLANs and tunnels with IPv6 addresses, you can also choose to route (forward traffic)
between them. Both the VLAN switching and IP routing function occur within the switch.
An interface can have up to 255 IPv6 addresses, with at least one being a link local address. IPv4 and
IPv6 interfaces can coexist on the same VLAN, allowing both IPv4 and IPv6 networks to coexist on the
same Layer 2 broadcast domain.
NOTE
Each IP address and mask assigned to a VLAN must represent a unique IP subnet. You cannot configure the same
IP address and subnet on different VLANs within the same virtual router.
Tunnels
Layer 3 tunnels are a transition method, as networks change over from IPv4 to IPv6. ExtremeWare XOS
supports the use of IPv6-in-IPv4 tunnels (known as configured tunnels or 6in4 tunnels) and IPv6-to-
IPv4 tunnels (known as 6to4 tunnels). To create or delete a tunnel, use the following commands:
create tunnel <tunnel_name> 6to4 source <source-address>
create tunnel <tunnel_name> ipv6-in-ipv4 destination <destination-address> source
<source-address>
delete tunnel <tunnel_name>
To configure and unconfigure IPv6 addresses for the tunnels, use the following commands:
configure tunnel <tunnel_name> ipaddress [{eui64} [<ipv6_address_mask> |
<ipv6_address>] | ipv6-link-local]
unconfigure tunnel <tunnel_name> ipaddress <ipv6_address_mask>
To display tunnel information, use the following commands:
show tunnel
show ipstats ipv6 {vlan <name> | tunnel <tunnelname> | vr <vrname>}
show ipconfig ipv6 {vlan <vlan_name> | tunnel <tunnelname>}

Specifying IPv6 Addresses

IP addresses have gone from the 32-bit (four-byte) numbers of IPv4 to the 128-bit (16-byte) numbers of
IPv6. The ExtremeWare XOS CLI accepts two standard representations for IPv6 addresses, as described
in RFC 3513, section 2.2, items 1, 2, and 3.
For example, the 128 bits of the address are represented by eight, four-digit hexadecimal numbers
separated by colons:
2000:af13:ee10:34c5:800:9192:ba89:2311
3f11:5655:2300:304:0000:0000:7899:acde
516
ExtremeWare XOS 11.3 Concepts Guide