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 trac types that are sensitive to dierent aspects of data
transmission. For example, storage trac is sensitive to packet loss, while server trac is latency-sensitive. In a single converged link, all
trac types coexist without imposing serious restrictions on others' performance. DCB allows iSCSI and FCoE SAN trac to co-exist with
server and LAN trac on the same network. DCB features reduce or avoid dropped frames, retransmission, and network congestion.
DCB provides lossless transmission of FCoE and iSCSI storage trac using:
• Separate trac classes for the dierent 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 trac, while allowing each trac class to exceed
its allocated bandwidth if another trac class is not using its share.
• DCBX discovery of peers, including PFC, ETS, and other DCB settings parameter exchange, mismatch detection, and remote
conguration of DCB parameters.
• iSCSI application protocol TLV information in DCBX advertisements to communicate iSCSI support to peer ports.
This example shows how to congure a DCB converged network in which:
• DCBx is enabled globally to ensure the exchange of DCBx, PFC, ETS, and ISCSI congurations between DCBx-enabled devices.
• PFC is congured to ensure loseless trac for dot1p priority 4, 5, 6, and 7 trac.
• ETS allocates 30% bandwidth for dot1p priority 0, 1, 2, and 3 trac and 70% bandwidth for priority 4, 5, 6, and 7 trac.
• iSCSI is congured to use dot1p priority 6 for iSCSI trac, 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 trac class used only for internal processing.
1. DCBX conguration (global)
Congure DCBX globally on a switch to enable the exchange of DCBX TLV messages with PFC, ETS, and iSCSI congurations.
OS10# configure terminal
OS10(config)# dcbx enable
Converged data center services
899