Brocade FICON Administrator's Guide v7.1.0 (53-1002753-01, March 2013)

FICON Administrator’s Guide 21
53-1002753-01
Configuring switched point-to-point FICON
2
7. Configure the switch parameters using the configure command and enter the responses
shown in Table 2 when prompted. (Items in italics are top-level parameters.)
TABLE 2 FICON switch parameters
Parameter Response Comment
Fabric parameter Yes Prompts for the fabric parameters.
Domain The domain ID is the switch address. The
recommended best practice is to set the switch
address and domain ID to be the same. The domain ID
is entered in decimal, so a switch address of
hexadecimal 0x22 would have a domain ID of decimal
34.
R_A_TOV 10000 Do not change. The Resource Allocation TimeOut Value
(RA_TOV) is entered in milliseconds. This works with
the variable E_D_TOV to determine switch actions
when presented with an error condition.
Allocated circuit resources with detected errors are not
released until the time value has expired. If the
condition is resolved prior to the timeout, the internal
timeout clock resets and waits for the next error
condition.
E_D_TOV 2000 The Error Detect TimeOut Value (E_D_TOV) is a timeout
value entered in milliseconds. This timer is used to flag
a potential error condition when an expected response
is not received within the set time limit. If the time for
an expected response exceeds the set value, then an
error condition occurs. Leave this value at 2 seconds
(2000) unless connected to extension equipment. In
some cases, when connecting to extension equipment,
such as the Brocade 7800, it needs to be set to 5
seconds (5000). This field should only be changed
after consulting a Brocade Certified Fabric
Professional.
WAN_TOV 0 Wide-Area Network TimeOut Value (WAN_TOV) is set in
milliseconds. This is the maximum frame timeout value
for a WAN, if any, interconnecting the Fibre
Channel islands.
MAX HOPS 7 This parameter should not be confused with the one-
hop FICON cascading limitation. There are
configurations that are more than one hop because
more than two domain IDs are used in the path that fit
within the IBM support limitation of “one hop.”
Data field size 2112 Do not change. Specifies the largest possible value, in
bytes, for the size of a type 1 (data) frame. The switch
advertises this value to other switches in the fabric
during construction of the fabric and to other devices
when they connect to the fabric. Setting this value
smaller than 2112 might result in decreased
performance.