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Cisco MDS 9000 series Configuration Manual

I/o accelerator
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S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Cisco MDS 9000 Family I/O Accelerator
Configuration Guide
Cisco MDS NX-OS Release 5.0(1a)
February 2010
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 527-0883
Text Part Number: OL-20708-01
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  • Page 1 S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m Cisco MDS 9000 Family I/O Accelerator Configuration Guide Cisco MDS NX-OS Release 5.0(1a)
  • Page 2 OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.

  • Page 3: Table Of Contents

    Unified Acceleration Service Topology Independent Transport Agnostic High Availability and Resiliency Improved Tape Acceleration Performance Load Balancing Example IOA Topology Terminology Clustering Hardware Requirements Software Requirements License Requirements Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 4 Task Flow for Converting an Existing IOA Cluster to use IPFC interface 2-13 Configuration Example for Converting IOA Cluster to Use the IPFC interface 2-13 Verifying the IOA Cluster Configuration 2-14 Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 5 Enabling Clustering Enabling the IOA Service Classifying the Switches to IOA Sites Configuring IOA Interfaces Displaying IOA Interface Status Configuring an IOA Cluster Displaying IOA Cluster Status Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 6 Launching IOA Manager Configuring Sites Adding a New Site Removing a Site Viewing a Site Adding Switches to a Site Removing Switches from a Site Configuring Clusters Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 7 Single-Fabric Topology Cluster Recovery Scenarios Deleting an Offline Switch from a Cisco IOA Cluster Deleting a Cisco IOA Cluster with One or More Offline Switches while the Master Switch is Online Deleting a Cisco IOA Cluster when All Switches Are Offline...
  • Page 8 S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m Cisco MDS 9000 Family I/O Accelerator Configuration Guide viii OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 9: New And Changed Information

    Fabric Manager Release 4.2(1) and later. To check for additional information about this release and to determine if this release supports I/O Accelerator, refer to the Cisco MDS 9000 Family Release Notes and Cisco Fabric Manager Release Notes available at the following Cisco Systems website: http://www.cisco.com/en/US/products/ps5989/prod_release_notes_list.html...
  • Page 10 S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m Cisco MDS 9000 Family I/O Accelerator Configuration Guide...

  • Page 11: Preface

    S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m Preface This preface describes the audience, organization, and conventions of the Cisco MDS 9000 Family I/O Accelerator Configuration Guide. The preface also provides information on how to obtain related documentation.

  • Page 12: Document Conventions

    Means reader be careful. In this situation, you might do something that could result in equipment damage or loss of data. Related Documentation The documentation set for the Cisco MDS 9000 Family includes the following documents. To find a document online, use the Cisco MDS NX-OS Documentation Locator at: http://www.cisco.com/en/US/docs/storage/san_switches/mds9000/roadmaps/doclocater.htm...

  • Page 13: Regulatory Compliance And Safety Information

    Cisco MDS 9124 and Cisco MDS 9134 Multilayer Fabric Switch Quick Start Guide • Software Installation and Upgrade Cisco MDS 9000 NX-OS Release 4.1(x) and SAN-OS 3(x) Software Upgrade and Downgrade Guide • Cisco MDS 9000 Family Storage Services Interface Image Install and Upgrade Guide •...

  • Page 14: Cisco Fabric Manager

    S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m Cisco MDS 9000 Family NX-OS Intelligent Storage Services Configuration Guide • Cisco MDS 9000 Family NX-OS High Availability and Redundancy Configuration Guide • Cisco MDS 9000 Family NX-OS Inter-VSAN Routing Configuration Guide •...

  • Page 15: Obtaining Documentation And Submitting A Service Request

    Obtaining Documentation and Submitting a Service Request For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at: http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html...
  • Page 16 S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m Cisco MDS 9000 Family I/O Accelerator Configuration Guide...

  • Page 17: Overview

    S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m C H A P T E R Overview This chapter provides an overview of the Cisco I/O Accelerator feature and includes the following sections: About Cisco I/O Accelerator, page 1-1 •...

  • Page 18: Topology Independent

    S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m the write acceleration and tape acceleration services on the Cisco MDS MSM-18/4 module, SSN-16 module, and 9222i switch as a fabric service.

  • Page 19: Example Ioa Topology

    Terminology The following Cisco IOA-related terms are used in this book: • Fabric—A physical topology of switches interconnected by Fibre Channel or FCIP ISLs.
  • Page 20 IOA cluster is being used for remote replication and backup, you can have all the replication flows classified into the replication flow group and all the backup flows classified into the backup flow group. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 21: Clustering

    MDS 9222i Switch, and the 16-Port Storage Services Node (SSN-16) module. Each MSM-18/4 Module and 9222i Switch has one service engine that can be configured for the Cisco IOA service. The SSN-16 module has four service engines that can be used for the IOA service.

  • Page 22: License Requirements

    S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m License Requirements The Cisco MDS 9000 Family IOA package is licensed per service engine and is tied to the chassis. The number of licenses required is equal to the number of service engines on which the intelligent fabric application is used.
  • Page 23 You can use the show license host-id command to find out which serial number to lock the license against. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 24 S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m Cisco MDS 9000 Family I/O Accelerator Configuration Guide...

  • Page 25: Getting Started

    Enables the use of the SSH service. switch(config)# feature ssh updated For more information about the SSH service, refer to the Cisco MDS 9000 Family NX-OS Security Configuration Guide. Enabling CFS CFS must be enabled on the IOA switches as well as those switches of which the hosts and targets are directly connected to.

  • Page 26: Ip Access Lists

    Step 2 Enables (default) CFS distribution on the switch. switch(config)# cfs distribute For more information about CFS, refer to the Cisco MDS 9000 Family NX-OS System Management Configuration Guide. IP Access Lists Cluster communication requires the use of the Management interface. IP ACL configurations must allow UDP and TCP traffic on ports 9333, 9334, 9335, and 9336.

  • Page 27: Configuring Fc-Redirect V2 Mode

    FC-Redirect configurations are deleted. FC-Redirect configurations can be deleted only by deleting all corresponding application configurations. The MDS switches not running Cisco NX-OS 3.3(1c) and later cannot be added to the fabric after the v2 mode is enabled. If the switches are added, all further FC-Redirect configuration changes will fail across the fabric.

  • Page 28: Using Fc-Redirect With Cfs Regions

    SAN exceeds the scalability limit supported by IOA. As of MDS NX-OS Release 4.2(1), the number of switches supported in a fabric is 34. To learn more about CFS regions, refer to the Cisco MDS 9000 Family NX-OS System Management Configuration Guide.

  • Page 29: Configuring Cfs Regions For Fc-Redirect

    Channel frames instead of using the management interface. Note Configuring IOA cluster with the IPFC interface is optional and is supported in Cisco MDS NX-OS Release 5.0(4c) or later. Support for GUI for configuring IOA cluster with the IPFC interface might be added in the future releases.

  • Page 30: Task Flow For Configuring Ioa Cluster To Use The Ipfc Interface

    The first step in the process of configuring IOA cluster to use the IPFC interface is to create a VSAN interface and configure IPv4 addresses. To create an interface VSAN, perform this task: Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 31: Enabling Ipv4 Routing

    64 bytes from 10.1.1.2: icmp_seq=4 ttl=64 time=0.875 ms --- 10.1.1.2 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3023ms rtt min/avg/max/mdev = 0.866/0.875/0.884/0.006 ms Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 32: Creating Ioa Cluster And Ioa Interface In The Local Node

    Adds remote node to the cluster with the IPFC interface Switch(config-ioa-cl)# node ip-address address. 10.1.1.2 Step 4 Adds IOA interfaces to the cluster. Switch(config-ioa-cl-node)# int ioa Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 33: Verifying The Cluster Configuration

    Figure 2-1 Configuration Example Interface vsan 1 : 10.1.1.2 Interface vsan 1 : 10.1.1.1 IOA stie : site1 IOA stie : site2 FCISL Sw-231-19 Sw-231-14 Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 34: Creating An Interface Vsan

    The following example verifies the configuration of sw-231-19 using show interface command: sw-231-19# show interface vsan 1 vsan1 is up, line protocol is up WWPN is 10:00:00:05:30:01:9f:09, FCID is 0xc60000 Internet address is 10.1.1.2/24 Cisco MDS 9000 Family I/O Accelerator Configuration Guide 2-10 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 35: Verifying The Connectivity

    Adding a Remote Node to the IOA Cluster The following example adds a remote node to IOA cluster: sw-231-14(config-ioa-cl)# node sw-231-19 ip-address 10.1.1.2 Cisco MDS 9000 Family I/O Accelerator Configuration Guide 2-11 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 36: Adding An Ioa Interface To The Switch

    Node sw-231-19 is remote switch Node ID is 2 IP address is 10.1.1.2 Status is online Belongs to Site site1 Node is not master switch Cisco MDS 9000 Family I/O Accelerator Configuration Guide 2-12 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 37: Verifying The Ioa Interface

    Adding Remote Node with IPFC Address, page 2-16 • Adding IOA Interfaces to the Remote Node, page 2-16 • Verifying the Cluster Nodes, page 2-16 • Cisco MDS 9000 Family I/O Accelerator Configuration Guide 2-13 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 38: Verifying The Flow Status

    This change can be disruptive. Please ensure you have read the "IOA Cluster Recovery Procedure" in the configuration guide. -- Are you sure you want to continue? (y/n) [n] y Cisco MDS 9000 Family I/O Accelerator Configuration Guide 2-14 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 39: Removing The Ioa Cluster From The Remote Node

    This change can be disruptive. Please ensure you have read the "IOA Cluster Recovery Procedure" in the configuration guide. -- Are you sure you want to continue? (y/n) [n] y Cisco MDS 9000 Family I/O Accelerator Configuration Guide 2-15 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 40: Adding Remote Node With Ipfc Address

    ------------------------------------------------------------------------------- Host WWN, VSAN Comp Status Switch,Interface Target WWN Pair ------------------------------------------------------------------------------- 21:01:00:1b:32:22:55:df, 1 online sw-231-14, ioa1/1 21:01:00:0d:77:dd:f8:9d, 1 sw-231-19, ioa4/1 sw-231-14# Cisco MDS 9000 Family I/O Accelerator Configuration Guide 2-16 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 41: Supported Topologies

    C H A P T E R Deployment Considerations This chapter describes the requirements and guidelines that are necessary to successfully deploy your Cisco I/O Accelerator SAN. Read this chapter before installing or configuring Cisco I/O Accelerator (IOA). This chapter includes the following sections: Supported Topologies, page 3-1 •...

  • Page 42: Core-Edge Topology

    Figure 3-2 illustrates the edge-core-edge topology where you are recommended to place the MSM-18/4 Module or SSN-16 Module at the core switches that interconnect the two sites. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 43: Collapsed Core Topology

    MSM-18/4 Module or SSN-16 Module (IOA interfaces) in the core switches that interconnect the two sites. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 44: Extended Core-Edge Topology

    IOA service. The ISLs between the core switches in the specific site has as much throughput as the WAN ISLs between the sites. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 45: Extending Across Multiple Sites

    This topology provides segregation and scalability of the IOA service across multiple sites. In Site-4, a single switch participates in multiple IOA clusters. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 46: Ivr Topologies

    VSAN before it reaches the target and vice-versa. IVR transit VSANs are used only for FC routing. IOA is not supported or deployed on transit VSANs. For more information, refer to the Cisco MDS 9000 Family NX-OS Inter-VSAN Routing Configuration Guide.

  • Page 47: Other Topologies

    If the management port is connected to a Layer 2 switch, spanning-tree must be disabled on these ports. In a Cisco Catalyst 6000 Series switch, you can implement this by configuring the spanning-tree portfast command on these ports which will treat these ports as access or host ports.

  • Page 48: Resiliency Considerations

    You can provision only one intelligent application on a single service engine. In SSN-16 there are 4 service engines and each service engine can host a single intelligent application. • In Cisco NX-OS Release 4.2(1), only IOA and FCIP can run on the same SSN-16 as in the following example: –...
  • Page 49 Cisco MDS 9000 Family NX-OS Inter-VSAN Routing Configuration Guide. • If there are multiple Cisco IOA clusters in a region, a target can be part of the IOA configuration in only one cluster. To change the target to a different cluster, the configuration in the first cluster must be deleted before creating the configuration in the second cluster.

  • Page 50: Configuration Limits

    IOA interface failures. If the number of switches in the SAN exceeds the scalability limit, consider using CFS regions as described in “Using FC-Redirect with CFS Regions” section on page 2-4. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 3-10 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 51 Configuring an IOA Cluster, page 4-5 • IOA Flow Setup Wizard, page 4-11 • Creating Multiple IOA Clusters on a Single Switch, page 4-14 Additional Configurations, page 4-15 • Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 52: Configuring Ioa

    Adding Interfaces to an IOA Cluster, page 4-8 • Adding N Ports to an IOA Cluster, page 4-9 • Configuring the IOA Flows, page 4-10 • Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 53: Enabling Clustering

    IOA clusters that the switch participates in. To complete the configuration for the reference topology, classify rtp-sw2 into RTP site. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 54: Configuring Ioa Interfaces

    0 device bytes in, 0 device bytes out 0 peer packets in, 0 peer packets out 0 peer bytes in, 0 peer bytes out 0 i-t create request, 0 i-t create destroy Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 55: Configuring An Ioa Cluster

    IOA Cluster is tape_vault Cluster ID is 0x213a000dec3ee782 Cluster status is online Is between sites SJC and RTP Total Nodes are 2 Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 56: Adding Nodes To An Ioa Cluster

    Step 2 Enters the cluster configuration submode and adds the local sjc-sw2(config)# ioa cluster tape_vault switch where this command is executed into the IOA cluster. sjc-sw2(config-ioa-cl)# Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 57 Node is the master switch Node 172.23.144.98 is remote switch Node ID is 2 Status is online Belongs to Site RTP Node is not master switch Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 58: Adding Interfaces To An Ioa Cluster

    303 i-t create request, 300 i-t create destroy 300 i-t activate request, 0 i-t deactivate request sjc-sw2# show ioa cluster tape_vault interface summary ------------------------------------------------------------------------------- Switch Interface Status Flows ------------------------------------------------------------------------------- Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 59: Adding N Ports To An Ioa Cluster

    10:0:0:0:0:0:0:1 This example shows how to display N ports configuration: sjc-sw2# show ioa cluster tape_vault nports ------------------------------------------------------------------------------- P-WWN Site Vsan ------------------------------------------------------------------------------- 10:00:00:00:00:00:00:01 11:00:00:00:00:00:00:01 10:00:00:00:00:00:00:02 11:00:00:00:00:00:00:02 Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 60: Configuring The Ioa Flows

    172.23.144.97, ioa2/2 11:00:00:00:00:00:00:02 172.23.144.98, ioa2/2 sjc-sw2# show ioa cluster tape_vault flows detail Host 10:00:00:00:00:00:00:01, Target 11:00:00:00:00:00:00:01, VSAN 100 Is online Belongs to flowgroup tsm Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-10 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 61: Ioa Flow Setup Wizard

    Classify the switches in the candidate switch list into appropriate sites. Step 2 Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-11 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 62 Host: 10:00:00:00:00:00:03:00 VSAN: 100 Target: 11:00:00:00:00:00:02:00 VSAN:100 Host: 10:00:00:00:00:00:03:00 VSAN: 100 Target: 11:00:00:00:00:00:03:00 VSAN:100 Host: 10:00:00:00:00:00:04:00 VSAN: 100 Target: 11:00:00:00:00:00:04:00 VSAN:100 Do you want to configure these flows? (yes/no) [yes] yes Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-12 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 63 --, -- 10:00:00:00:00:00:02:00, 100 offline --, -- 11:00:00:00:00:00:03:00 --, -- 10:00:00:00:00:00:03:00, 100 offline --, -- 11:00:00:00:00:00:03:00 --, -- 10:00:00:00:00:00:04:00, 100 offline --, -- 11:00:00:00:00:00:04:00 --, -- Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-13 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 64: Creating Multiple Ioa Clusters On A Single Switch

    Adds the remote node to the cluster and enters the node configuration mode. sjc-sw2(config-ioa-cl-node)# Adds the IOA interface to the cluster. interface ioa2/3 Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-14 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 65: Additional Configurations

    Shuts down the cluster. This command must be used to sjc-sw2(config-ioa-cl)# shut recover a cluster when it is partitioned. The change can be disruptive. For more information, see “Cluster Recovery Scenarios, page B-5. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-15 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 66: Load Balancing The Flows

    3-8. Caution The following are advanced tunable parameters, and you must consult the Cisco Services and Support team before tuning these parameters. To set the the following advanced tunable parameters based on your deployment requirements, perform this task:...

  • Page 67: Changing The Node Description And Ip Address Of An Ioa Cluster

    Change the node-description (IP address) and node IP-address of a cluster. • Change node-description(DNS name) of a cluster. • Change the node-description from IP address to DNS name and vice versa. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-17 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 68: Guidelines For Changing The Node Description And Ip Address Of An Ioa Cluster

    Add switch2 Node with New Description and the IP Address, page 4-20 • Add IOA Interfaces on switch2, page 4-20 • Verify the Node Description and IP Address and Flows, page 4-20 • Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-18 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 69 192.125.231.14 sw-231-19(config-ioa-cl)# sh ioa cluster c1 node sum ------------------------------------------------------------------------------- Switch Site Status Master Node ID ------------------------------------------------------------------------------- 192.125.231.19(L) unknown (cluster is offline) sw-231-19(config-ioa-cl)# Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-19 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 70: Add Switch2 Node With New Description And The Ip Address

    Verify the Node Description and IP Address and Flows Use the following show commands to confirm the functioning of the cluster with the new IP address: Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-20 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 71: Displaying Interface Statistics

    0.56 24049257618 109.66 4698262901274 sjc-sw2# show ioa int int ioa 2/1 summary ---- ----------------------- ---- ------------- ---- --- FLOW HOST VSAN STATUS COMP ACC Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-21 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 72 Target End error recovery statistics Sent REC 0, received 0 ACCs, 0 Rejects Sent SRR 0, received 0 ACCs Sent ABTS 0, received 0 ACCs Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-22 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 73 0 rejected due to table full, 0 scsi busy 0 ABTS sent, 0 ABTS received 0 tunnel synchronization errors Host End statistics Received 80384094 writes, 80384082 XFER_RDY Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-23 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 74 Output (rate is 5 min avg) ----------------------------- ----------------------------- Rate Total Rate Total MB/s Frames MB/s Frames ------------------------------------------------------------------------------- ioa1/1 Device 9573683 1126308 Peer 1126833 1157161 sjc-sw2# Cisco MDS 9000 Family I/O Accelerator Configuration Guide 4-24 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 75: Ioa Manager

    You can click Stop to cancel the action. However, stopping the action may not roll back the transactions that were executed. Figure 5-1 shows the IOA Manager interface. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 76: Toolbar

    I/O Accelerator Toolbar Icon Description Applies the changes. Refreshes the window. Adds a cluster or interface. Deletes an existing entry. Displays a real-time chart of the selected switch. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 77: Launching Ioa Manager

    To create a new site using IOA Manager, follow these steps: Step 1 Select Sites in the navigation pane. You see the IOA Manager window as shown in Figure 5-3. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 78: Removing A Site

    To remove a site using IOA Manager, follow these steps: In the navigation pane, click the name of the site you want to delete. Step 1 Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 79: Viewing A Site

    To view a site using IOA Manager, follow these steps: Step 1 In the navigation pane, click Sites. You see the IOA Manager window as shown in Figure 5-8. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 80: Adding Switches To A Site

    You see the site details as shown in Figure 5-9. Figure 5-9 Viewing Site Details Using IOA Manager Adding Switches to a Site To add a switch to a site, follow these steps: Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 81: Removing Switches From A Site

    IOA interfaces. Adding a New Cluster To create a new cluster using IOA Manager, follow these steps: Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 82 You see the select switch dialog box as shown in Figure 5-13. Figure 5-13 Select Switch Dialog Box Select a switch from the drop-down list, and then click OK. Step 4 Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 83: Removing A Cluster

    You see the IOA Manager window as shown in Figure 5-15. Figure 5-15 Removing a Cluster Using IOA Manager Click the Remove icon on the toolbar. Step 2 Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 84: Viewing Clusters

    Click the name of the cluster to view the details in the information pane. Step 3 You see the IOA Manager window with the cluster details as shown in Figure 5-18. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-10 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 85: Configuring Interfaces

    To add a new interface to a cluster using IOA Manager, follow these steps: Step 1 Expand the cluster node in the navigation pane and click Interfaces. You see the IOA Manager window as shown in Figure 5-19. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-11 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 86: Removing Interfaces From A Cluster

    To remove an interface from a cluster, follow these steps: Step 1 Expand the cluster node in the navigation pane and click Interfaces. You see the IOA Manager window as shown in Figure 5-20. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-12 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 87: Configuring Flows

    If IVR zoneset is activated, Fabric Manager will automatically consider the IVR zoneset and list the Note candidate IVR flows in the Unassigned flows section. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-13 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 88 Check the Enable Compression check box to enable compression. Step 5 Check the Enable Tape Acceleration check box to enable tape acceleration. Step 6 Note Write accleration is enabled by default. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-14 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 89: Removing A Flow

    Expand the Cluster node in the navigation pane and then click Flows. You see the IOA Manager window displaying the Assigned Flows and Unassigned Flows as shown in Figure 5-24. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-15 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 90: Viewing Interface Statistics

    Select a switch from the Interfaces Statistics table in the information pane. Step 2 You will see the IOA Manager window as shown in Figure 5-25. Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-16 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 91 Click the chart icon on the toolbar to monitor real-time charts. Step 3 You see the chart as shown in Figure 5-26. Figure 5-26 IOA Manager Real-time Chart Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-17 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)
  • Page 92 S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m Cisco MDS 9000 Family I/O Accelerator Configuration Guide 5-18 OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 93: Appendix

    FCIP or Fibre Channel link of the WRITE command and Transfer Ready. It also eliminates the delay caused by multiple Transfer Readys needed for the exchange going over the FCIP or Fibre Channel link. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 94: Scsi Tape Acceleration

    Acting as a proxy for the remote tape drives, the local Cisco MDS switch proxies a transfer ready to signal the host to start sending data. After receiving all the data, the local Cisco MDS switch proxies the successful completion of the SCSI WRITE operation.

  • Page 95: A P P E N D I X A Scsi Write Acceleration And Tape Acceleration

    SCSI read operations from the host, sends out SCSI read operations on its own to the tape drive. The prefetched read data is cached at the local Cisco MDS switch. The local Cisco MDS switch on receiving SCSI read operations from the host, sends out the cached data. This method results in more data being sent over the FCIP or FC tunnel in the same time period compared to the time taken to send data without read acceleration for tapes.
  • Page 96 In tape acceleration for writes, after a certain amount of data has been buffered at the remote Cisco MDS switch, the write operations from the host are flow controlled by the local Cisco MDS switch by not proxying the Transfer Ready.

  • Page 97: Appendix

    Node ID Every switch in a cluster has a node ID. Cisco IOA assigns a node ID to every new switch as it is added to the cluster. The switch where the cluster is created is assigned the node ID of 1. This is the master switch.

  • Page 98: Cluster Quorum

    When the switches lose connectivity between them, the master switch S1 continues to be operational since it has the lower node ID and can form an (N/2) switch cluster. Switch S2 becomes nonoperational. Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 99: Three-Switch Cluster Scenarios

    S2 will be the master. When S1 comes up again, it will rejoin the cluster. Note that S2 will continue to be the master. If two switches fail, the cluster will become nonoperational. These examples describe reboots on all switches in the cluster: Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 100: Four-Switch Cluster Scenarios

    After the ISSU is completed and the switches boot up, the upgraded node rejoins the cluster as a • slave node. This feature is tied to ISSU logic and no additional commands need to be executed. Note Cisco MDS 9000 Family I/O Accelerator Configuration Guide OL-20708-01, Cisco MDS NX-OS Release 5.0(1a)

  • Page 101: Supported Topologies

    Refer to this section for information on recovery procedures that are used when one or more switches in a Cisco IOA cluster is offline or when you want to change the master switch assignment from one switch to another switch.

  • Page 102: Deleting A Cisco Ioa Cluster With One Or More Offline Switches While The Master Switch Is Online

    Deleting a Cisco IOA Cluster with One or More Offline Switches while the Master Switch is Online To delete a Cisco IOA cluster that includes one or more offline switches and online master switch, use these procedures. Do not remove a cluster master switch from a cluster and then try to revive the cluster on an offline Caution switch.

  • Page 103: Deleting A Cisco Ioa Cluster When All Switches Are Offline

    Delete the cluster on every offline switch that was shut down in the first procedure. Deleting a Cisco IOA Cluster when All Switches Are Offline To delete a Cisco IOA cluster when the master switch and all other switches are offline, use these procedures.

  • Page 104: Reviving A Cisco Ioa Cluster

    (for example, due to a quorum loss). The recovery procedure includes deleting one or more offline switches and then reviving the cluster on the remaining switches. A Cisco IOA cluster must only be revived on the switch with the latest IOA configuration version as Caution displayed by the show IOA cluster detail command.

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