HP A7533A HP StorageWorks Fabric OS 6.1.1 administrator guide (5697-0235, Dece - Page 33

optional; by default, this value is LOCL, which uses the local clock of the principal or primary switch as the clock server. switch:admin> tsclockserver LOCL switch:admin> tsclockserver "132.163.135.131" switch:admin> tsclockserver 132.163.135.131 switch:admin> The following example shows how to set up more than one NTP server using a DNS name: switch:admin> tsclockserver "10.32.170.1;10.32.170.2;ntp.localdomain.net" Updating Clock Server configuration...done. Updated with the NTP servers Changes to the clock server value on the principal or primary FCS switch are propagated to all switches in the fabric. Customizing switch names Switches can be identified by IP address, Domain ID, World Wide Name (WWN), or by customized switch names that are unique and meaningful. Switch names can be from 1 to 31 characters long, except for the HP StorageWorks DC Director. The DC Director name must be 1 to 15 characters in length. All switch names must begin with a letter, and can contain letters, numbers, or the underscore character. It is not necessary to use quotation marks. NOTE: Changing the switch name causes a domain address format RSCN (registered state change notification) to be issued and may be disruptive to the fabric. To customize the switch name: 1. Open a Telnet session for each logical switch and issue the switchName command. 2. Connect to the switch and log in using an admin account. 3. Issue the switchName command, using the following syntax: switchname "newname" where newname is the new name for the switch. 4. Record the new switch name for future reference. 5. Record the new switch name for the second domain for future reference. Working with Domain IDs Although Domain IDs are assigned dynamically when a switch is enabled, you can reset them manually so that you can control the ID number or resolve a Domain ID conflict when you merge fabrics. If a switch has a Domain ID when it is enabled, and that Domain ID conflicts with a switch in the fabric, the conflict is automatically resolved. The process can take several seconds, during which time traffic is delayed. The default Domain ID for HP switches is 1. NOTE: Do not use Domain ID 0. The use of this Domain ID can cause the switch to reboot continuously. Avoid changing the Domain ID on the FCS in secure mode. To minimize down time, change the Domain IDs on the other switches in the fabric. To display Domain IDs: Fabric OS 6.1.1 administrator guide 33