R21xx-HP FlexFabric 11900 FCoE Command Reference

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Table 4 Recommended values for different application scenarios
Recommended value A
pp
lication scenarios Remarks
Less than 90 seconds
Connected to servers, storage
devices, or third-party
switches.
According to FC-BB-5, the upper limit of the FKA
advertisement period value is 90 seconds. In this
scenario, a single-MPU FCF switch or NPV switch
will experience FCoE traffic disruption during an
ISSU reboot, because this ISSU reboot takes more
than 225 (2.5*90) seconds and the peer deletes
the virtual link for failing to receive unsolicited
Discovery Advertisements within 225 seconds.
To ensure service continuity during an
active/standby switchover on an NPV switch or
ISSU reboot on a dual-MPU NPV switch, you must
also adjust the FKA advertisement period value on
the upstream FCF switch. This is because the FKA
advertisement period value configured on the
NPV switch affects only its VFC interfaces in F
mode and connected ENodes, and its VFC
interfaces in NP mode use the FKA advertisement
period value learned from the upstream FCF
switch.
60–90 seconds
Active/standby switchover on
the switch takes more than 2.5
x 60 seconds because of the
amount of FCoE configuration.
ISSU reboot on a dual-MPU
switch takes more than 2.5 x
60 seconds because of the
amount of FCoE configuration.
For more information about ISSU, see
Fundamentals Configuration Guide.
300–600 seconds
ISSU reboot on a single-MPU
switch to which no nodes are
attached.
During an ISSU reboot on a single-MPU switch,
the switch cannot send unsolicited Discovery
Advertisements or keepalive frames.
Examples
# Configure the FKA advertisement period value as 20 seconds.
<Sysname> system-view
[Sysname] fcoe fka-adv-period 20
fcoe global fcf-priority
Use fcoe global fcf-priority to configure the system FCF priority.
Use undo fcoe global fcf-priority to restore the default.
Syntax
fcoe global fcf-priority priority
undo fcoe global fcf-priority
Default
The default setting is 128.