BLADEOS 6.3 Application Guide
SM IPv4 and IPv4 Configuration Extensions
BLADEOS 6.3 supports EIPAA extensions to the chassis’ Advanced Management Module (AMM) that provide more IP address configuration options. The following IP addressing options are now available on the AMM:
Automatic IPv4 address configuration via DHCPv4
Automatic IPv6 address configuration via DHCPv6 or Stateless
Manual IPv4 and IPv6 static address configuration
IPv4 and IPv6 address change notification
Management Interface Connection
The switch management interface (for IPv4 or IPv6) will function only if the AMM has an IP address in the same network as the switch.
Also, use caution when disabling the IPV4 management interface from the AMM. This removes the IPv4 routes to the switch, severing communication to the IPv4 management interface on the switch.
DHCPv6 Behavior
The DHCPv6 server provides an IPv6 address only. The server does not provide an IPv6 prefix length or default gateway in the DHCP offer. Instead, this information is expected from an upstream router in a Router Advertisement (RA) packet, and will override the default settings.
The DHCPv6 IP address assignment process is summarized as follows.
1.The DCHP server sends an offer with the base IPv6 address.
2.The switch installs the address using a default prefix length of 64.
3.An upstream router sends an RA that may specify a different prefix length.
4.When this RA is received, the switch will modify the IPv6 address to new prefix length.
5.The switch will also add the source IP address of the RA to the default routers list.
BMD00178, April 2010 | 19 |