Fabric OS Administrator’s Guide 29
53-1001763-02
Domain IDs 2
If a switch has a domain ID when it is enabled, and that domain ID conflicts with another switch in
the fabric, the conflict is automatically resolved if the other switch’s domain ID is not persistently
set. The process can take several seconds, during which time traffic is delayed. If both switches
have their domain IDs persistently set, one of them will need to have its domain ID changed to a
domain ID not used within the fabric.
The default domain ID for Brocade switches is 1.
ATTENTION
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.

Displaying the domain IDs

1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the fabricShow command.
Example output of fabric information, including the domain ID (D_ID)
The principal switch is determined by the arrow ( > ) next to the name of the switch. In this
output, the principal switch appears in blue and boldface.
switch:admin> fabricshow
Switch ID Worldwide Name Enet IP Addr FC IP Addr Name
-------------------------------------------------------------------------
2: fffc02 10:00:00:60:69:e0:01:46 10.3.220.1 0.0.0.0 "ras001"
3: fffc03 10:00:00:60:69:e0:01:47 10.3.220.2 0.0.0.0 "ras002"
5: fffc05 10:00:00:05:1e:34:01:bd 10.3.220.5 0.0.0.0 "ras005"
fec0:60:69bc:63:205:1eff:fe34:1bd
6: fffc06 10:00:00:05:1e:34:02:3e 10.3.220.6 0.0.0.0 "ras006"
7: fffc07 10:00:00:05:1e:34:02:0c 10.3.220.7 0.0.0.0 "ras007"
10: fffc0a 10:00:00:05:1e:39:e4:5a 10.3.220.10 0.0.0.0 "ras010"
15: fffc0f 10:00:00:60:69:80:47:74 10.3.220.15 0.0.0.0 "ras015"
19: fffc13 10:00:00:05:1e:34:00:ad 10.3.220.19 0.0.0.0 "ras019"
fec0:60:69bc:63:219:1eff:fe34:1bd
20: fffc14 10:00:00:05:1e:40:68:78 10.3.220.20 0.0.0.0 "ras020"
25: fffc19 10:00:00:05:1e:37:23:c6 10.3.220.25 0.0.0.0 "ras025"
30: fffc1e 10:00:00:60:69:90:04:1e 10.3.220.30 0.0.0.0 "ras030"
35: fffc23 10:00:00:05:1e:07:c7:26 10.3.220.35 0.0.0.0 "ras035"
40: fffc28 10:00:00:60:69:50:06:7f 10.3.220.40 0.0.0.0 "ras040"
45: fffc2d 10:00:00:05:1e:35:10:72 10.3.220.45 0.0.0.0 "ras045"
46: fffc2e 10:00:00:05:1e:34:c5:17 10.3.220.46 0.0.0.0 "ras046"
47: fffc2f 10:00:00:05:1e:02:aa:f7 10.3.220.47 0.0.0.0 >"ras047"
50: fffc32 10:00:00:60:69:c0:06:64 10.1.220.50 0.0.0.0 "ras050"
(output truncated)
The Fabric has 26 switches
The fields in the fabricShow display are:
:
Switch ID The switch’s domain_ID and embedded port D_ID. The numbers are broken down as
follows:
Example 64: fffc40
64 is the switch domain_ID
fffc40 is the hexidecimal format of the embedded port D_ID.
Worldwide Name The switch’s WWN.