Dell PowerConnect Brocade 6505 Hardware Reference Guide - Page 22

2 Brocade 6505 configuration If you are going to use an IPv6 address, enter the network information in semicolon-separated notation as a standalone command. switch:admin> ipaddrset -ipv6 --add 1080::8:800:200C:417A/64 IP address is being changed...Done. Date and time settings The Brocade 6505 maintains the current date and time inside a battery-backed real-time clock (RTC) circuit. Date and time are used for timestamping log events. Switch operation does not depend on the date and time; a Brocade 6505 with an incorrect date and time value still functions properly. However, because the date and time are used for logging, error detection, and troubleshooting, you should set them correctly. Time zones You can set the time zone for the switch by name. You can select continent, country, or time zone region names. If the time zone is not set with the named options, the switch retains the offset time zone settings. This is a number of hours offset from Greenwich Mean Time (GMT). If you have set the time zone with a name, you can revert to the offset format if you choose. For more information about the tsTimeZone command, refer to the Fabric OS Command Reference. You can set the time zone for a switch using the tsTimeZone command. The tsTimeZone command allows you to perform the following tasks: • Display all of the time zones supported in the firmware • Set the time zone based on a country and city combination or based on a time zone ID such as PST The time zone setting has the following characteristics: • You can view the time zone settings. However, only those with administrative permissions can set the time zones. • The tsTimeZone setting automatically adjusts for Daylight Savings Time. • Changing the time zone on a switch updates the local time zone setup and is reflected in local time calculations. • By default, all switches are in the GMT time zone (0,0). If all switches in a fabric are in one time zone, it is possible for you to keep the time zone setup at the default setting. • System services that have already started will reflect the time zone changes only after the next reboot. • Time zone settings persist across failover for high availability. Local time synchronization You can synchronize the local time of the principal or primary fabric configuration server (FCS) switch to a maximum of eight external Network Time Protocol (NTP) servers. To keep the time in your SAN current, it is recommended that the principal or primary FCS switch has its time synchronized with at least one external NTP server. The other switches in the fabric will automatically take their time from the principal or primary FCS switch. 10 Brocade 6505 Hardware Reference Manual 53-1002449-01