B-7Troubleshooting TipsDuralink64 v4.2 Failover Software Questions1 What is Duralink64 Failover software?Duralink64 Failover software is a network device applicationthat automatically reacts to preserve a network connectionwhen an Ethernet link fails. Duralink64 Failover supportsmission-critical applications by activating a standby link in theevent of failure, providing increased uptime and maintainingserver availability. The driver establishes an active and a hot-standby link. Once the active link goes down, the standby onebecomes active. The standby link is activated when thefollowing conditions occur on the primary link: link loss, thedriver loses contact with the NIC's “keep alive” mechanism,abnormal hardware interrupt occurs, the port becomes unableto transmit for a specified time, or abnormal send and receivecounters occur, such as too many collisions or errors on thesegment.2 Which protocols work with Duralin64 Failover?TCP/IP and NetBEUI under Windows NT and TCP/IP andIPX/SPX under NetWare.3 Is Duralink64 software interoperable/compatible with othervendors' NICs and network devices?Duralink software only works with Adaptec DuraLAN NICsbut is fully interoperable with network devices (such asswitches and hubs) from other vendors.4 Does Duralink64 Failover work with a switch or a hub?Duralink64 Failover works with any switch or any hub.5 How many ports can I configure for the failover group?Two ports per failover group. Within each group, only one portcan be used as the primary or active port and only one port canbe used as the backup or standby port.6 What happens during failover?The driver momentarily halts data transmission, does errorchecking, transfers the MAC address of the primary port to thebackup port, enables the backup port for data transmissions,and continues to transmit data on the backup port.
