Fabric OS Administrator's Guide

Fabric OS 7.0.1

53-1002446-01

documentation@brocade.com

Domain IDs

Although domain IDs are assigned dynamically when a switch is enabled, you can change 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 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 needs 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 switch 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 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

 

Table 4 displays the fabricShow fields.

 

Table 4

fabricShow fields

Field	Description
Switch ID	The switch 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 hexadecimal format of the embedded port D_ID.
World Wide Name	The switch WWN.
Enet IP Addr	The switch Ethernet IP address for IPv4- and IPv6-configured switches. For IPv6 switches, only the static IP address displays.
FC IP Addr	The switch Fibre Channel IP address.
Name	The switch symbolic or user-created name in quotes.

Setting the domain ID

1.	Connect to the switch and log in on an account assigned to the admin role.

2.	Enter the switchDisable command to disable the switch.

3.	Enter the configure command.

4.	Enter y after the Fabric Parameters prompt.

Fabric parameters (yes, y, no, n): [no] y

 

5.	Enter a unique domain ID at the Domain prompt. Use a domain ID value from 1 through 239 for normal operating mode (FCSW-compatible).

Domain: (1..239) [1] 3

 

6.	Respond to the remaining prompts, or press Ctrl-D to accept the other settings and exit.

7.	Enter the switchEnable command to re-enable the switch.