Configuring iscsi priority, Configuring the iscsi profile – Brocade Network OS Administrator’s Guide v4.1.1 User Manual

Page 457

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NOTE
Brocade recommends against advertising dot1.tlv and dot3.tlv LLDPs if your network contains CNAs
from non-Brocade vendors, as doing so may cause functionality problems.

10.Return to privileged EXEC mode.

switch(conf-lldp-profile-UK_LLDP_IT)# end

11.Enter the copy command to save the running-config file to the startup-config file.

switch(conf-lldp-profile-UK_LLDP_IT)# end

switch# copy running-config startup-config

Configuring iSCSI priority

The iSCSI TLV is used only to advertise the iSCSI traffic configuration parameters to the attached CEE
enabled servers and targets. No verification or enforcement of the usage of the advertised parameters
by the iSCSI server or target is done by the switch. The iSCSI priority setting is used to configure the
priority to be advertised in the DCBx iSCSI TLV.

To configure the iSCSI priority, perform the following steps from privileged EXEC mode.

1. Enter the configure terminal command to access global configuration mode.
2. Enter LLDP configuration mode.

switch(config)# protocol lldp

3. Configure the iSCSI priority.

switch(conf-lldp)# iscsi-priority 4

NOTE
The default iscsi-priority is 4 and does not display unless you change the iscsi-priority to a different
value.

4. Advertise the TLV.

switch (conf-lldp)# advertise dcbx-iscsi-app-tlv

Configuring the iSCSI profile

You can configure an iSCSI profile to be applied to individual interfaces. However, the priority bit must
be set manually for each interface. Using the no profile name command deletes the entire profile.

To configure iSCSI profiles, perform the following steps from privileged EXEC mode.

1. Configure the CEE map, if it has not already been created. For information on the cee-map

command structure, refer to the Network OS Command Reference.

switch(config)# cee-map default

switch(conf-ceemap)# priority-group-table 1 weight 50 pfc

switch(conf-ceemap)# priority-group-table 2 weight 30 pfc on

switch(conf-ceemap)# priority-group-table 3 weight 20 pfc on

switch(conf-ceemap)# priority-table 1 1 1 1 2 3 1 1

The priority-table command syntax is as follows:

priority-table PGID0 PGID1 PGID2 PGID3 PGID4 PGID5 PGID6 PGID7

For all PGID values, the PGID value range is 0 through 7 for the DWRR Priority Group, and 15.0
through 15.7 for the Strict Priority Group. The PGID value and the CoS value are equivalent, so that
specifying PGID0 sets the Priority Group ID for all packets with CoS = 0, specifying PGID1 sets the
Priority Group ID for all packets with CoS = 1, all the way through specifying PGID7, which sets the
Priority Group ID for all packets with CoS = 7.

Priority-Table in CEE map configuration requires that PGID 15.0 is dedicated for CoS7. Because of
this restriction, make sure that PGID15.0 is configured only as the last parameter for Priority-Table
configuration.

Configuring iSCSI priority

Network OS Administrator’s Guide

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