PowerConnect 6224/6224F/6224P/6248/6248P Release Notes
System Firmware Version 3.2.0.6 Page 9
¾ Configured Tunnels MTU
To comply with RFC 4213, Basic Transition Mechanisms for IPv6 Hosts and Routers, the IPv6 MTU on
configured IPv6 over IPv4 tunnels was changed from 1480 bytes to 1280 bytes.
¾ IPv6 6 to 4 Auto Tunnels
The 6 to 4 tunnels automatically formed IPv4 6 to 4 tunnels for carrying IPv6 traffic. The automatic tunnel
IPv4 destination address is derived from the 6 to 4 IPv6 address of the tunnel next hop. There is support for
a 6 to 4 border router that connects a 6 to 4 site to a 6 to 4 domain. It sends/receives tunneled traffic from
routers in a 6 to 4 domain that includes other 6 to 4 border routers and 6 to 4 relay routers.
¾ VRRP Route Interface Tracking
This extends the capability of the Virtual Router Redundancy Protocol (VRRP) to allow tracking of
specific route/interface IP state within the router that can alter the priority level of a virtual router for a
VRRP group.
The exception to this is, if that VRRP group is the IP address owner, its priority is fixed at 255 and can not
be reduced through tracking process.
¾ ICMP Throttling
This adds configuration options for the transmission of various types of ICMP messages.
This project adds the following configuration options:
• Rate limiting the generation of ICMP error messages.
• Suppression of ICMP echo replies.
• Suppression of ICMP Redirects.
• Suppression of Destination Unreachables.
¾ IP Helper
Provides the ability to enable DHCP relay on specific interfaces, with DHCP server addresses specified
independently on each interface. The ip helper-address commands configure both DHCP and UDP relay.
¾ OSPF Enhancements
A CLI command is added with options to do the following:
• Disable and re-enable OSPF
• Clear the OSPF configuration
• Bounce all or specific OSPF neighbors
• Flush and re-originate all self-originated external LSAs
• Clear OSPF statistics
¾ Support of IPv6 routes in PIM-SM and PIM-DM
Support for IPv6 routes has been added to PIM-SM and PIM-DM.