User guide

September 2009
OmniSwitch 6400/6850/6855/9000/9000E------ Release 6.4.2.R01 Page 33 of 79
IPv6 - Globally Unique Local Unicast Addresses
Unique Local IPv6 Unicast Addresses are intended to be routable within a limited area such as a site
but not on the global Internet. Unique Local IPv6 Unicast Addresses are used in conjunction with BGP
(IBGP) speakers as well as exterior BGP (EBGP) neighbors based on configured policies and have the
following characteristics:
• Globally unique ID (with high probability of uniqueness).
• Use the well-known prefix FC00::/7 to allow for easy filtering at site boundaries.
• Allow sites to be combined or privately interconnected without creating any address conflicts
or requiring renumbering of interfaces that use these prefixes.
• Internet Service Provider independent and can be used for communications inside of a site
without having any permanent or intermittent Internet connectivity.
• If accidentally leaked outside of a site via routing or DNS, there is no conflict with any other
addresses.
• In practice, applications may treat these addresses like global scoped addresses.
• A 40-bit global identifier is used to make the local IPv6 address prefixes globally unique. This
global ID can either be explicitly configured, or created using the pseudo-algorithm
recommended in RFC 4193.
IPv6 – Scoped Multicast Addresses
The IPv6 Scoped Multicast Address feature allows for the configuration of per-interface scoped IPv6
multicast boundaries. This feature allows an OmniSwitch to configure a PIM domain into multiple
administratively scoped regions and is known as a Zone Boundary Router (ZBR). A ZBR will not
forward packets matching an interface’s boundary definition into or out of the scoped region, will
prune the boundary for PIM-DM, as well as reject joins for the scoped range for PIM-SM.
IP/IP Tunneling
The IP/IP tunneling feature allows IP traffic to be tunneled through an IP network. This feature can be
used to establish connctivity between remote IP networks using an intermediate IP network such as the
Internet.
IP Multicast VLAN
IP Multicast VLAN involves the creation of separate, dedicated VLANs constructed specifically for
multicast traffic distribution. These distribution VLANs connect to the nearest multicast router and
support multicast traffic only. The IP Multicast feature works in both the enterprise environment and
the VLAN Stacking environment. The ports are separately classified as VLAN stacking ports or as
legacy ports (Fixed ports/Tagged Ports). To ascertain that data flow is limited to either the VLAN
Stacking domain or the enterprise domain, VLAN Stacking ports must be members of only the VLAN
Stacking VLANs, while the normal legacy ports must be members of only enterprise mode VLANs.
Inlcudes support for multiple sender ports.
Interswitch Protocol (AMAP)
Alcatel-Lucent Interswitch Protocols (AIP) are used to discover adjacent switches and retain mobile
port information across switches. By default, AMAP is enabled.
Alcatel-Lucent Mapping Adjacency Protocol (AMAP) is used to discover the network topology of
Alcatel-Lucent switches in a particular installation. Using this protocol, each switch determines which