Dell PowerConnect 6224 Release Note

Also see for PowerConnect 6224: Configuration guide User guide Command line interface guide Specifications Planning and preparation guide

Contents

PowerConnect 6224/6224F/6224P/6248/6248P Release NotesSystem Firmware Version 3.2.0.6 Page 5¾ MLD Snooping (RFC2710)In IPv4, Layer 2 switches can use IGMP Snooping to limit the flooding of multicast traffic by dynamicallyconfiguring Layer 2 interfaces so that multicast traffic is forwarded to only those interfaces associated withIP multicast address.In IPv6, MLD snooping performs a similar function. With MLD snooping, IPv6 multicast data isselectively forwarded to a list of ports intended to receive the data (instead of being flooded to all of theports in a VLAN). This list is constructed by snooping IPv6 multicast control packets.¾ MGMD ProxyThe IGMP Proxy component has been extended to include support for MLD Proxy and is now called theMulticast Group Membership Discovery (MGMD) Proxy. The MGMD Proxy is used to enable the systemto issue MGMD host messages on behalf of hosts that the system discovered through standard MGMDrouter interfaces, thus acting as proxy to all its hosts residing on its router interfaces.¾ Dynamic ARP InspectionDynamic ARP Inspection (DAI) is a security feature that rejects invalid and malicious ARP packets. Thefeature prevents a class of man-in-the-middle attacks, where an unfriendly station intercepts traffic for otherstations by poisoning the ARP caches of its unsuspecting neighbors. The miscreant sends ARP requests orresponses mapping another station’s IP address to its own MAC address.¾ Multiple LLDP Neighbors per InterfaceThis feature allows support for multiple neighbors on a single LLDP interface.¾ Configurable DSCP for Voice VLANAllow the user to configure the voice VLAN DSCP parameter and set the DSCP value. This value isretrieved by LLDP when the LLDPDU is transmitted (if LLDP has been enabled on the port and therequired TLV is configured for the port).¾ CDP InteroperabilityAllows 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 aVoice VLAN is manually configured on the port.¾ SSH/SSL RefreshThe SSH update incorporates the latest security and bug fixes.