Data Center Bridging (DCB) | 139
4 Configure the DCBX port role used by the interface to 
exchange DCB information, where:
•
auto-upstream configures the port to receive a peer 
configuration. The configuration source is elected from 
auto-upstream ports.
• auto-downstream configures the port to accept the 
internally propagated DCB configuration from a 
configuration source.
•
config-source configures the port to serve as the 
configuration source on the switch.
•
manual configures the port to operate only on 
administer-configured DCB parameters. The port does 
not accept a DCB configuration received from a peer or 
a local configuration source.
Default: Manual.
[no] dcbx port-role 
{config-source | 
auto-downstream | 
auto-upstream | manual}
PROTOCOL LLDP
5 On manual ports only: 
Configure the PFC and ETS TLVs advertised to DCBX 
peers, where:
• ets-conf enables the advertisement of ETS 
Configuration TLVs.
• ets-reco enables the advertisement of ETS Recommend 
TLVs.
• pfc enables the advertisement of PFC TLVs.
Default: All PFC and ETS TLVs are advertised.
Note: You can configure the transmission of more than one 
TLV type at a time; for example: advertise dcbx-tlv ets-conf 
ets-reco. You can enable ETS recommend TLVs (ets-reco) 
only if ETS configuration TLVs (ets-conf) are enabled. To 
disable TLV transmission, use the no form of the command; 
for example, no advertise dcbx-tlv pfc ets-reco. 
[no] advertise dcbx-tlv 
{ets-conf | ets-reco | pfc} 
[ets-conf | ets-reco | pfc] 
[ets-conf | ets-reco | pfc] 
PROTOCOL LLDP
6 On manual ports only: 
Configure the Application Priority TLVs advertised on the 
interface to DCBX peers, where:
• fcoe enables the advertisement of FCoE in Application 
Priority TLVs.
• iscsi enables the advertisement of iSCSI in Application 
Priority TLVs.
Default: Application Priority TLVs are enabled to advertise 
FCoE and iSCSI.
Note: To disable TLV transmission, enter 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 
FIP Snooping and iSCSI Optimization.
[no] advertise dcbx-appln-tlv 
{fcoe | iscsi}
PROTOCOL LLDP
Step Task Command Command Mode