HP Cisco Nexus 5000 Cisco Nexus 5000 Series Release Notes Release 4.0(1a)N1(1a - Page 23

Caveats Send documentation comments to [email protected] • CSCsq27576 Symptom: FC-SP authentication is supported only with a switch over the E/TE port. Authentication with native Fibre Channel (FC) and Fibre Channel over Ethernet (FCoE) initiator or target is not supported. Workaround: None. • CSCsq32710 Symptom: SNMP users configured with a user-defined roles cannot retrieve any Fibre Channel interfaces. Workaround: Use one of the predefined roles on the switch such as network-admin or network-operator. • CSCsq37899 Symptom: Deleting class-fcoe or class-default from an output policy map will cause show policy-map and show running-config terminal commands to be inconsistent if the priority keyword was configured for either of the classes. Workaround: The default bandwidth percentage for class-fcoe and class-default is 50 percent. Before you remove these classes from an output policy, make sure that the remaining classes in the policy map do not exceed 50 percent. Alternatively, if you want to allocate minimum bandwidth to class-fcoe or class-default, configure the bandwidth for these classes to 0 percent. • CSCsq39683 Symptom: Fibre Channel links with traffic running on it might generate syslog errors such as the following: 2008 May 21 15:08:55 switch %KERN-3-SYSTEM_MSG: FCP_ERRFCP_PORT: gat_fcp_isr_process_blk_intr@1441, jiffies = 0xb1cec:ISR threshold reached, reg_block = 0x8, num_regs = 6, idx = 0, src_bit = 11 - kernel There is no loss in functionality and these messages can be ignored. Workaround: None. • CSCso83662 Symptom: One global MAC address is used in all STP and PVRST frames originating on various ports. This can result in inconsistent MAC moves on peer switches connected with multiple links. Workaround: None. Resolved Caveats-Cisco NX-OS Release 4.0(0)N1(1a) This section lists the resolved caveats for this release. • CSCsq53614 Symptom: Ethernet port channels configured between two Nexus 5000Series switches cause a memory leak in the DCBX process. This leak eventually leads to the DCBX process crashing and a system reboot (in a few days). This issue occurs only with Ethernet port channels between Nexus 5000 Series switches. Port channels using the Catalyst 6500 Series switches do not have this problem. Workaround: Disable receive and transmit Link Layer Discovery Protocol (LLDP) on the port channel members by entering the following configuration under each Ethernet interface that is a member of the port channel: Interface Ethernet 1/1 OL-16601-01 Cisco Nexus 5000 Series Release Notes, Release 4.0(1a)N1(1a) 23