Specifications

Chapter 5. IBM System Networking RackSwitch implementation 193
At the time of writing, the following IPv6 features were not supported in IBM Networking
OS V6.8:
򐂰 Dynamic Host Control Protocol for IPv6 (DHCPv6)
򐂰 Border Gateway Protocol for IPv6 (BGP)
򐂰 Routing Information Protocol for IPv6 (RIPng)
You can use IBM Networking OS V6.8 features to configure IP addresses to use either IPv4
or IPv6 address formats. However, the following switch features support IPv4 only:
򐂰 SNMP trap host destination IP address
򐂰 Bootstrap Protocol (BOOTP) and DHCP
򐂰 RADIUS, TACACS+, and LDAP
򐂰 QoS metering and re-marking ACLs for out-profile traffic
򐂰 VMware Virtual Center (vCenter) for VMready
򐂰 Routing Information Protocol (RIP)
򐂰 Internet Group Management Protocol (IGMP)
򐂰 Border Gateway Protocol (BGP)
򐂰 Protocol Independent Multicast (PIM)
򐂰 Virtual Router Redundancy Protocol (VRRP)
򐂰 sFLOW
The main difference between the IPv6 and IPv4 implementation of the reference architecture
described in Chapter 3, “Reference architectures” on page 107 is the restriction of using
VRRP only for IPv4. There is no gateway redundancy protocol in IPv6 implementation.
Anycast addresses are used in combination with server NIC teaming. The same gateway
IPv6 address is configured as an anycast address on both access switches IP interfaces.
Packets sent to an anycast address are delivered to the nearest interface identified by that
address. The NIC teaming on the host is configured in
failover mode, which means that only
one port is active at a time (and connected to an access switch) and the other port is passive
(and connected to the other access switch). Using NIC teaming, packets are sent only to an
access switch.
For the implementation input information (IP addresses, VLANs, trunks, and so on), see
Chapter 3, “Reference architectures” on page 107.
IPv6 interfaces
The following guidelines apply for IPv6 IP interfaces on the RackSwitch G8264 and
RackSwitch G8124 switches:
򐂰 Each IPv6 interface supports multiple IPv6 addresses. You can manually configure up to
two IPv6 addresses for each interface, or you can allow the switch to use
stateless autoconfiguration.
򐂰 You can manually configure two IPv6 addresses for each interface, as follows:
– The initial IPv6 address is a global unicast or anycast address.
– A second IPv6 address can be a unicast or anycast address.
– You cannot configure both addresses as anycast. If you configure an anycast address
on the interface, you must also configure a global unicast address on that interface.
Important: For a complete list of the supported features, see the IBM Networking OS 6.8
Features Summary at:
http://www.ibm.com/support/docview.wss?uid=isg3T7000470