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

¾Ping/Traceroute Enhancements

New ping options have been added to allow the user to specify the number and size of echo requests and the interval between echo requests. A ping can now be initiated via SNMP using the MIB defined in RFC 2925.

New traceroute options have been added to allow the user to specify the initial and maximum time to live (TTL) in probe packets, the maximum number of failures before termination, the number of probes sent for each TTL, and the size of each probe. A trace route can be initiated in the web and SNMP user interfaces.

¾Static Reject Routes

Allows the user to configure a static route to discard the packets to a particular destination, thereby forcing a black-hole routing behavior for a particular set of IP prefixes.

This can be done for the following reasons:

•Prevent a routing loop in the network (default route configured on a router).

•A preventive measure against a DOS attack on a router with unwanted destination addresses.

¾Clear ARP Cache Management Port

A new CLI command has been added to enable clearing of the ARP table of entries learned from the management port.

¾OSPFv2 Point-to-Point Links

OSPF can treat an interface as a point-to-point circuit, even though the physical network is a broadcast network. This simplifies OSPF operation on the link. OSPF does not elect a designated router for a point- to-point network, and does not generate a network LSA to represent a point-to-point network in the link state topology. This mode of operation is useful when there are only two routers attached to the link (either a physical or virtual LAN).

In point-to-point mode, OSPF joins the AllSPFRouters multicast group on the interface and sends all OSPF packets on the interface to AllSPFRouters. OSPF accepts packets received on point-to-point interfaces even if the source IP address is not on a local subnet.

¾OSPVv2/v3 Summary Reject Routes

The area address range advertised by OSPF router at area boundaries as summary route into another area can lead to routing loops in some situations. This feature can avoid situations where a routing loop can occur in a network.

¾OSPF v2/v3 Passive Interfaces

Allows passive interfaces for OSPF implementations.

System Firmware Version 3.2.0.6

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