Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 1112

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 traffic types that are sensitive to different aspects of data transmission. For example, storage traffic is sensitive to packet loss, while server traffic is latency-sensitive. In a single converged link, all traffic types coexist without imposing serious restrictions on others' performance. DCB allows iSCSI and FCoE SAN traffic to co-exist with server and LAN traffic on the same network. DCB features reduce or avoid dropped frames, retransmission, and network congestion. DCB provides lossless transmission of FCoE and iSCSI storage traffic using: • Separate traffic classes for the different service needs of network applications. • PFC flow control to pause data transmission and avoid dropping packets during congestion. • ETS bandwidth allocation to guarantee a percentage of shared bandwidth to bursty traffic, while allowing each traffic class to exceed its allocated bandwidth if another traffic class is not using its share. • DCBX discovery of peers, including PFC, ETS, and other DCB settings parameter exchange, mismatch detection, and remote configuration of DCB parameters. • iSCSI application protocol TLV information in DCBX advertisements to communicate iSCSI support to peer ports. This example shows how to configure a DCB converged network in which: • DCBx is enabled globally to ensure the exchange of DCBx, PFC, ETS, and ISCSI configurations between DCBx-enabled devices. • PFC is configured to ensure loseless traffic for dot1p priority 4, 5, 6, and 7 traffic. • ETS allocates 30% bandwidth for dot1p priority 0, 1, 2, and 3 traffic and 70% bandwidth for priority 4, 5, 6, and 7 traffic. • iSCSI is configured to use dot1p priority 6 for iSCSI traffic, and advertise priority 6 in iSCSI application TLVs. • The default class-trust class map honors dot1p priorities in ingress flows 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 traffic class used only for internal processing. 1. DCBX configuration (global) Configure DCBX globally on a switch to enable the exchange of DCBX TLV messages with PFC, ETS, and iSCSI configurations. OS10# configure terminal OS10(config)# dcbx enable 1112 Converged data center services