Dell PowerEdge FX2 FN I/O Aggregator Release Notes - Page 5

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: 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. Step 1. 2. Task Command Mode 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# 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 • 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. |5