Dell POWEREDGE M1000E - Manual (Page 79)

Access Gateway Administrator’s Guide 59
53-1001760-01
Adaptive Networking on Access Gateway
3
FIGURE 12 Starting point for QoS
Upgrade and downgrade considerations with
Adaptive Networking in AG mode enabled
Downgrading to Fabric OS v6.3.0 is supported. Note the following considerations when upgrading
and downgrading from Fabric OS v6.4.0 to Fabric OS v6.2.X and earlier:
• If any of the AG QoS enabled ports are active and you attempt a firmware downgrade, the
downgrade is prevented. You must disable the QoS-enabled ports before performing a
firmware downgrade.
• Upgrades from earlier versions to Fabric OS v6.4.0 are allowed, but AG QoS-enabled ports do
not become effective until the ports are disabled or enabled so that QoS mode can be
negotiated on the ISL links.
Adaptive Networking on Access Gateway considerations
• QoS is configured in the fabric, as normal, and not on the AG module. To extend QoS benefits
to AG and devices behind it you only need to ensure that the AN and/or SAO licenses are
applied and enabled on the AG module.
• QoS on Access Gateway is only supported on Fabric OS 6.3 and later.
• You should disable HBA QoS if connected to a 6.2 version AG.
• Disable QoS on an AG port if it connects with a switch running Fabric OS 6.2. Otherwise, the
port will automatically disable with an error. To recover, disable QoS on the port, then enable
the port.
• Disabling QoS on online N_Ports in the same trunk can cause the slave N_Port ID virtualization
(NPIV) F_Port on the edge switch to become persistently disabled with “Area has been
acquired.” This is expected behavior because after QOS is disabled, the slave NPIV F_Port on
the edge switch also tries to come up as a master. To avoid this issue, simply persistently
enable the slave F_Port on the switch.
• QoS takes precedence over ingress rate limiting
• Ingress rate limiting is not enforced on trunked ports.