Dell PowerEdge FX2/FX2s - Manual (Page 5)

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Restrictions and Known Issues with Other Devices
• When configuring CAM ACL using the cam-acl l2acl 2 ipv4acl 2 ipv6acl 0 ipv4qos 1 l2qos 2 l2pt 0 ipmacacl 0
vman-qos 0 ecfmacl 2 fcoeacl 4 iscsioptacl 0 command and reloading, the system fails due to a limitation in the BCM
SDK 6.3.4.
• Connections between an Aggregator and the following devices are not supported:
— Cisco fabric extenders (FEXes): Storage deployments are not supported; LAN deployments are supported.
• When an Aggregator interoperates with a Brocade B8000 switch, rebooting the Aggregator results in the B8000 switch
generating more PFC frames, which may result in the failure to establish the iSCSI sessions.
• In connections with a server using a Q-LOGIC CNA for converged traffic, a FIP snooping session may flap when
non-standard LAN traffic is transmitted with SAN traffic.
• In connections with a server using a Q-LOGIC CNA, FCoE sessions will be cleared when the keepalive parameter in
fcoe-map is toggled (disabled and enabled).
• In connections with a server using an Intel X520 CNA, the server may fail to boot from the SAN network if a Brocade
CNA is also installed in the server.
• If an Intel X520 CNA adapter is used for any DCB connection, follow these steps to establish sessions to send and receive
traffic on an Aggregator:
Step Task Command Mode
1. On each server-facing port, enter the following commands in interface configuration mode.
The dcbx version cee command configures a port to use the CEE (Intel 1.01) version of DCBX. Configure server-facing ports
with the shutdown and no shutdown commands, as needed. For example:
Dell# interface tenGigabitEthernet 0/1
Dell(conf-if-te-0/1)# protocol lldp
Dell(conf-lldp)# dcbx version cee
Dell(conf-lldp)# exit
Dell(conf-if-te-0/1)# no shutdown
Dell(conf-if-te-0/1)# exit
Dell#
2. Display information on FIP-snooped sessions and
check the entries in ENode Interface fields to see if
you have established the FCoE session on a
server-facing port. show fip-snooping sessions EXEC Privilege
Note: The interface connected to the Intel X520 CNA adapter must be manually shut/no shut for the full
functionality after making the below changes.
• To ensure interoperability, the recommended LLDP and LACP timeout values that should be configured in devices to
which the Aggregator connects (such as ToR switch and servers) are:
— LLDP timeout: 30 seconds
— LACP long timeout
• When 68-byte frames are sent at line rate to a server, the server-facing LACP connection may flap. This behavior is due to
the server’s inability to send LACP control packets when handling incoming line-rate traffic.