Cisco Systems MDS 9000 setup guide Configuring iSCSI

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C H A P T E R 35

Configuring iSCSI

Cisco MDS 9000 Family IP storage (IPS) services extend the reach of Fibre Channel SANs by using open-standard, IP-based technology. The switch allows IP hosts to access Fibre Channel storage using the iSCSI protocol.

Note The iSCSI feature is specific to the IPS module and is available in Cisco MDS 9200 Switches or Cisco MDS 9500 Directors.

The Cisco MDS 9216I switch and the 14/2 Multiprotocol Services (MPS-14/2) module also allow you to use Fibre Channel, FCIP, and iSCSI features. The MPS-14/2 module is available for use in any switch in the Cisco MDS 9200 Series or Cisco MDS 9500 Series.

For information on configuring Gigabit Ethernet interfaces, see the “Configuring Gigabit Ethernet Interfaces” section on page 37-4.

This chapter includes the following sections:

About iSCSI, page 35-1

Configuring iSCSI, page 35-3

iSCSI High Availability, page 35-38

iSCSI Authentication Setup Guidelines and Scenarios, page 35-45 About iSCSI Storage Name Services, page 35-58

About iSNS Client Functionality, page 35-59 Creating an iSNS Client Profile, page 35-59 About iSNS Server Functionality, page 35-62 Configuring iSNS Servers, page 35-63 Default Settings, page 35-72

About iSCSI

The iSCSI feature consists of routing iSCSI requests and responses between iSCSI hosts in an IP network and Fibre Channel storage devices in the Fibre Channel SAN that are accessible from any Fibre Channel interface of the Cisco MDS 9000 Family switch (see Figure 35-1).

 

 

Cisco MDS 9000 Family Configuration Guide

 

 

 

 

 

 

 

OL-6973-03, Cisco MDS SAN-OS Release 2.x

 

 

35-1

 

 

 

 

 

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Contents Configuring iSCSI 35-2 ISCSI to FCP Fibre Channel Routing Fibre Channel SAN View-iSCSHI Host as an HBACreating iSCSI Interfaces Enabling iSCSIDynamic Mapping Presenting Fibre Channel Targets as iSCSI TargetsLUN2 Dynamic Target MappingStatically Mapped iSCSI Targets Static MappingAssigning iSCSI Node Names ISCSI Virtual Target Configuration Examples35-9 Initiator Identification Presenting iSCSI Hosts as Virtual Fibre Channel HostsInitiator Presentation Modes Transparent Initiator Mode10 Virtual Host HBA Port Dynamic Mapping Making the Dynamic Initiator WWN Mapping Static Proxy-Initiator Mode Multiplexing IPS Ports Vsan Membership for iSCSI Example of Vsan membership for iSCSI devices Fibre Channel Zoning Based Access Control ISCSI Access ControlAdvanced Vsan membership for iSCSI hosts Enters configuration mode ISCSI ACL Based Access Control Enforcing Access Control Config t Iscsi authentication Chap Mutual Chap Authentication Restricting iSCSI Initiator AuthenticationISCSI Immediate Data and Unsolicited Data Features ISCSI Listener Port TCP Tuning Parameters ISCSI Interface Advanced FeaturesISCSI Routing Modes QoSPass -Thru Displaying iSCSI Interfaces Displaying iSCSI InformationExample 35-1 Displays the iSCSI Interface Information Data-in 0 pdus, 0 bytes Switch# Iscsi2/1 TMF REQ0 WWNsNWWN Displaying Global iSCSI Information Bytes TX 8712, RX 0 Number of connection 1 Connection #1 Vsan ID 5, Fcid Vsan ID 1, Fcid 0x6c0203 Switch# ISCSI initiators IP address Switch# show iscsi initiator configured Displaying iSCSI Virtual Targets Transparent Target FailoverDisplaying iSCSI User Information Logical View ISCSI HA with Host Not Having Any Multi-Path Software Storage Port Failover LUN Trespass Multiple IPS Ports Connected to the Same IP Network Lqn.com.cisco.mds.5-3.gw.p1 Lqn.com.cisco.mds.2-1.gw.p1 Multiple Gigabit Ethernet Interfaces in the Same IP NetworkNetwork Lqn.com.cisco.mds.vr1.gw.p1 VRRP-Based High AvailabilityEthernet PortChannel-Based High Availability ISCSI Authentication Setup Guidelines and ScenariosChap with External Radius Server No Authentication Chap with Local Password DatabaseISCSI Transparent Mode Initiator Host ISCSI-zone-1 10.11.1.10 Iscsi-zone-1 Iscsi-zone-2 Target Page IP address of the iSCSI Target Storage Device Requiring LUN Mapping Show iscsi initiator Configured nWWN ISCSI initiator in name server Initiator in name server Page About iSCSI Storage Name Services About iSNS Client Functionality Verifying iSNS Client Configuration Displays iSNS Queries Show isns profile countersExample 35-22 Displays Tagged iSNS Interfaces DiscoverConfiguring iSNS Servers Configuring the ESI Retry Count ISCSI Configuration DistributionEnabling the iSNS Server ISNS Client Registration and Deregistration Target Discovery Displays Explicitly Registered Objects Node Type Target1 Node Index Node type attribute in a compact format one per line Entity Index Node Type Target1 TCP Example 35-41and Example Default Settings Parameters Default
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MDS 9000 specifications

Cisco Systems MDS 9000 series is a line of storage networking switches designed to address the unique demands of enterprise-level data centers. These switches provide high-performance solutions for connecting various storage devices, including traditional disk arrays, solid-state drives, and tape libraries. The MDS 9000 series is built for scalability, high availability, and advanced security, making it an ideal choice for organizations looking to optimize their storage infrastructure.

One of the standout features of the MDS 9000 series is its support for Fibre Channel and FICON protocols, which enable seamless integration with various storage technologies. This versatility is crucial for organizations that may be using a mix of applications and storage performance requirements. The switches support multiple speeds, including 1G, 2G, 4G, 8G, and even 16G Fibre Channel rates, ensuring that they can adapt to evolving storage needs.

The MDS 9000 is known for its advanced features in terms of management and automation. Cisco provides intelligent automation capabilities to enhance operational efficiency. Features like Flow Vision and intelligent network services allow for deep visibility into storage environments, enabling administrators to monitor performance, troubleshoot issues, and optimize resource allocation effectively. This level of visibility helps organizations to mitigate risks and ensure data availability.

Security is another paramount consideration for the MDS 9000 series. The switches are equipped with a range of security features, including role-based access controls, encryption technologies, and zoning options. These capabilities help safeguard sensitive data and ensure compliance with industry regulations, making the MDS 9000 a trusted choice for enterprises dealing with critical data.

The architecture of the MDS 9000 series is designed for high availability and resiliency. With redundant power supplies and cooling systems, these switches minimize downtime and ensure continuous operation. Additionally, they offer advanced features like non-disruptive software upgrades, which eliminate the need for scheduled outages during firmware updates.

In summary, the Cisco Systems MDS 9000 series offers a robust set of features tailored for enterprise storage networking. Its support for various protocols, intelligent management capabilities, and high availability characteristics make it a preferred choice for organizations seeking to optimize their storage infrastructure for both current and future needs. By investing in the MDS 9000 series, businesses can enhance their operational efficiency, ensure data security, and maintain a competitive edge in today's data-driven landscape.