Vlan Interfaces And Gid Index Values - Qlogic QL45212 User Manual

6–Configuring RoCE
Configuring RoCE on the Adapter for Linux

VLAN Interfaces and GID Index Values

If you are using VLAN interfaces on both server and client, then configure the
same VLAN ID on the switch. If you are running traffic through a switch, the
Infiniband applications must use the correct GID value, which is based on the
VLAN ID and VLAN IP address.
Based on the following results, the GID value (-x 4 / -x 5) should be used for any
perftest applications.
# ibv_devinfo -d qedr0 -v|grep GID
fe80:0000:0000:0000:020e:1eff:fe50:c5b0
0000:0000:0000:0000:0000:ffff:c0a8:0103
2001:0db1:0000:0000:020e:1eff:fe50:c5b0
2001:0db2:0000:0000:020e:1eff:fe50:c5b0
0000:0000:0000:0000:0000:ffff:c0a8:0b03
fe80:0000:0000:0000:020e:1e00:0350:c5b0
NOTE
The default GID value is zero (0) for back-to-back/Pause settings. For
server/switch configurations, you must identify the proper GID Value. If you
are using a switch, refer to the corresponding switch configuration
documents for the proper settings.
GID[ 0]:
GID[ 1]:
GID[ 2]:
GID[ 3]:
GID[ 4]:
GID[ 5]:
68
IP address for VLAN interface
VLAN ID 3
BC0154503-00 C