Connectivity Guide
IP Address TCP Port IP Address TCP Port ID
----------------------------------------------------------
10.10.10.210 54835 10.10.10.40 3260 1
Supported Releases 10.3.0E or later
show iscsi storage-devices
Displays information about the storage arrays directly attached to OS10 ports.
Syntax
show iscsi storage-devices
Parameters None
Command Mode EXEC
Usage Information The command output displays the storage device connected to each switch port and whether iSCSI automatically
detects it.
Example
OS10# show iscsi storage-devices
Interface Name Storage Device Name Auto Detected Status
-----------------------------------------------------------
ethernet1/1/23 EQL-MEM true
Supported Releases 10.3.0E or later
Converged network DCB example
A converged data center network carries multiple SAN, server, and LAN trac types that are sensitive to dierent aspects of data
transmission. For example, storage trac is sensitive to packet loss, while server trac is latency-sensitive. In a single converged link, all
trac types coexist without imposing serious restrictions on others' performance. DCB allows iSCSI and FCoE SAN trac to co-exist with
server and LAN trac on the same network. DCB features reduce or avoid dropped frames, retransmission, and network congestion.
DCB provides lossless transmission of FCoE and iSCSI storage trac using:
• Separate trac classes for the dierent service needs of network applications.
• PFC ow control to pause data transmission and avoid dropping packets during congestion.
• ETS bandwidth allocation to guarantee a percentage of shared bandwidth to bursty trac, while allowing each trac class to exceed
its allocated bandwidth if another trac class is not using its share.
• DCBX discovery of peers, including PFC, ETS, and other DCB settings parameter exchange, mismatch detection, and remote
conguration of DCB parameters.
• iSCSI application protocol TLV information in DCBX advertisements to communicate iSCSI support to peer ports.
This example shows how to congure a DCB converged network in which:
• DCBx is enabled globally to ensure the exchange of DCBx, PFC, ETS, and ISCSI congurations between DCBx-enabled devices.
• PFC is congured to ensure loseless trac for dot1p priority 4, 5, 6, and 7 trac.
• ETS allocates 30% bandwidth for dot1p priority 0, 1, 2, and 3 trac and 70% bandwidth for priority 4, 5, 6, and 7 trac.
• iSCSI is congured to use dot1p priority 6 for iSCSI trac, and advertise priority 6 in iSCSI application TLVs.
• The default class-trust class map honors dot1p priorities in ingress ows and applies a 1-to-1 dot1p-to-qos-group and a 1-to-1 qos-
group-to-queue mapping. In OS10,
qos-group represents a trac class used only for internal processing.
1. DCBX conguration (global)
Congure DCBX globally on a switch to enable the exchange of DCBX TLV messages with PFC, ETS, and iSCSI congurations.
OS10# configure terminal
OS10(config)# dcbx enable
1112
Converged data center services