PowerConnect 6224/6224F/6224P/6248/6248P Release Notes

¾MLD Snooping (RFC2710)

In IPv4, Layer 2 switches can use IGMP Snooping to limit the flooding of multicast traffic by dynamically configuring Layer 2 interfaces so that multicast traffic is forwarded to only those interfaces associated with IP multicast address.

In IPv6, MLD snooping performs a similar function. With MLD snooping, IPv6 multicast data is selectively forwarded to a list of ports intended to receive the data (instead of being flooded to all of the ports in a VLAN). This list is constructed by snooping IPv6 multicast control packets.

¾MGMD Proxy

The IGMP Proxy component has been extended to include support for MLD Proxy and is now called the Multicast Group Membership Discovery (MGMD) Proxy. The MGMD Proxy is used to enable the system to issue MGMD host messages on behalf of hosts that the system discovered through standard MGMD router interfaces, thus acting as proxy to all its hosts residing on its router interfaces.

¾Dynamic ARP Inspection

Dynamic ARP Inspection (DAI) is a security feature that rejects invalid and malicious ARP packets. The feature prevents a class of man-in-the-middle attacks, where an unfriendly station intercepts traffic for other stations by poisoning the ARP caches of its unsuspecting neighbors. The miscreant sends ARP requests or responses mapping another station’s IP address to its own MAC address.

¾Multiple LLDP Neighbors per Interface

This feature allows support for multiple neighbors on a single LLDP interface.

¾Configurable DSCP for Voice VLAN

Allow the user to configure the voice VLAN DSCP parameter and set the DSCP value. This value is retrieved by LLDP when the LLDPDU is transmitted (if LLDP has been enabled on the port and the required TLV is configured for the port).

¾CDP Interoperability

Allows the ISDP feature to interoperate with Cisco™ devices running CDP.

Industry Standard Discovery Protocol (ISDP) is a proprietary Layer 2 network protocol which inter- operates with Cisco network equipment and is used to share information between neighboring devices (routers, bridges, access servers, and switches).

This feature is enabled by default if using phones with CDP enabled, but should be disabled if a Voice VLAN is manually configured on the port.

¾SSH/SSL Refresh

The SSH update incorporates the latest security and bug fixes.

System Firmware Version 3.2.0.6

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