White Papers

Table Of Contents
fcoe: enables the advertisement of FCoE in Application Priority TLVs.
iscsi: enables the advertisement of iSCSI in Application Priority TLVs.
The default is Application Priority TLVs are enabled and advertise FCoE and iSCSI.
NOTE: To disable TLV transmission, use the no form of the command; for example, no advertise DCBx-appln-
tlv iscsi.
For information about how to use FCoE and iSCSI, refer to Fibre Channel over Ethernet and iSCSI Optimization.
6. Configure the FCoE priority advertised for the FCoE protocol in Application Priority TLVs.
PROTOCOL LLDP mode
[no] fcoe priority-bits priority-bitmap
The priority-bitmap range is from 1 to FF.
The default is 0x8.
7. Configure the iSCSI priority advertised for the iSCSI protocol in Application Priority TLVs.
PROTOCOL LLDP mode
[no] iscsi priority-bits priority-bitmap
The priority-bitmap range is from 1 to FF.
The default is 0x10.
DCBx Error Messages
The following syslog messages appear when an error in DCBx operation occurs.
LLDP_MULTIPLE_PEER_DETECTED: DCBx is operationally disabled after detecting more than
one DCBx
peer on the port interface.
LLDP_PEER_AGE_OUT: DCBx is disabled as a result of LLDP timing out on a DCBx peer
interface.
DSM_DCBx_PEER_VERSION_CONFLICT: A local port expected to receive the IEEE, CIN, or CEE
version
in a DCBx TLV from a remote peer but received a different, conflicting DCBx version.
DSM_DCBx_PFC_PARAMETERS_MATCH and DSM_DCBx_PFC_PARAMETERS_MISMATCH: A local DCBx port
received
a compatible (match) or incompatible (mismatch) PFC configuration from a peer.
DSM_DCBx_ETS_PARAMETERS_MATCH and DSM_DCBx_ETS_PARAMETERS_MISMATCH: A local DCBx port
received
a compatible (match) or incompatible (mismatch) ETS configuration from a peer.
LLDP_UNRECOGNISED_DCBx_TLV_RECEIVED: A local DCBx port received an unrecognized DCBx TLV
from
a peer.
Debugging DCBx on an Interface
To enable DCBx debug traces for all or a specific control paths, use the following command.
Enable DCBx debugging.
EXEC PRIVILEGE mode
debug DCBx {all | auto-detect-timer | config-exchng | fail | mgmt | resource | sem | tlv}
all: enables all DCBx debugging operations.
auto-detect-timer: enables traces for DCBx auto-detect timers.
FC Flex IO Modules
941