Configuring the Brocade ServerIron to Enable Peak Performance of Siemens ComAssistant

Transcription

1 Configuring the Brocade ServerIron to Enable Peak Performance of Siemens ComAssistant Using a Web-based user interface, Siemens OpenScape ComAssistant serves up a suite of PBX and call control features to support enterprise communications. This brief provides guidance for ServerIron configuration in ComAssistant deployments.

2 CONTENTS Introduction...3 Brocade ServerIron...3 Siemens OpenScape ComAssistant...3 Basic Terminology...4 Real Server...4 Virtual Server...4 Virtual Server Port...4 Real Server Port...4 Health Checks...4 Putting It All Together...4 The Basic Topology...5 The Load Balancer...5 Configuration Prerequisites...6 Building the Configuration Configure Basic Network Connectivity and High Availability...8 Load Balancer #1...8 Load Balancer # Configure Global Parameters Configure Real Servers and Real Server Ports Configure Virtual Server and Virtual Server Ports with Bindings Verify functionality...16 Completing the Configuration...18 For Load Balancer # For Load Balancer # Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 2 of 24

3 INTRODUCTION Brocade ServerIron The Brocade ServerIron family of Application Delivery Controllers (ADCs) intelligently balance enduser traffic across server farms to provide high availability, acceleration, security, and scalability for business-critical IP, Web, and Voice over IP (VoIP) applications, ensuring a better end-user experience with IP-based applications. The Brocade ServerIron provides a total solution for server load balancing, application (Layer 7) switching, server farm and application security, SSL acceleration, compression, and multisite redundancy. It offers enterprisesn service providers, and e-commerce data centers, a highly resilient application switch in both stackable and high-port-density, chassis-based configurations to optimize application delivery while decreasing the Total Cost of Ownership (TCO). ServerIron switches are deployed in more than 3,000 of the world s most demanding customer networks, where they support business-critical applications, including financial trading, , DNS, VoIP, Web, CDN, e-commerce, and ERP. The ServerIron family offers the broadest portfolio of Layer 4 7 products and meets a range of needs in the enterprise, service provider, and content provider markets. Siemens OpenScape ComAssistant Modern enterprise communications solutions such as Siemens HiPath are becoming increasingly popular. Siemens OpenScape ComAssistant provides an easy way to enhance the user experience. ComAssistant is a desktop call control interface that provides feature access via a Web browser. Users can initiate and log incoming and outgoing calls, transfer calls, conference calls, and access many other OpenScape telephony features. Additionally, OpenScape ComAssistant offers: One-number-service Journal entries, a speed-dial list, and LDAP search functionality Hotkey functionality enables users to dial numbers directly from Microsoft Office applications Team members can view one another s availability and support each other by handling incoming communications LDAP integration of corporate directories and personal address lists Support for multiple business groups enables large corporations to treat in-house companies separately by providing separate directory access or managed service bill-back models Integrates into business productivity applications such as mysap Portal, IBM WebSphere, and IBM Sametime Support for up to 50,000 users The ComAssistant WebGUI is provided through a Web server and a single server cannot simultaneously support thousands of users. However, ServerIron can distribute the connection load across multiple Web servers, increasing the performance of the solution dramatically by intelligently sharing the load between multiple instances of ComAssistant. This document explains how to load balance multiple ComAssistant front-end servers using the Brocade ServerIron. For configuration information for Siemens ComAssistant, see the product documentation. Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 3 of 24

4 BASIC TERMINOLOGY Real Server One of the functions of an ServerIron ADC is traffic distribution. A real server is a node/host or a physical server/network device that receives traffic from the ServerIron ADC after a load balancing decision has taken place. The server is represented by the IP address to which the ADC directs traffic. In this document the term real server is used to describe the physical ComAssistant front-end Web servers that receive traffic after the load balancing decision at the ADC. Virtual Server A virtual server is a single ADC-owned IP address to which clients connect and from which they are forwarded by the ADC to one of many physical or real servers. A virtual server IP address is commonly referred to as a VIP (Virtual server IP). Virtual Server Port Virtual servers offer services to their clients, such as HTTP, DNS, and others. A virtual server port is a TCP or UDP port that is open for clients to talk to the VIP. The virtual server port for HTTP is usually TCP port 80, and for DNS is typically UDP port 53. This solution uses ports 8443, 7778, 7788, and Real Server Port The Brocade ADC receives traffic on one of its VIPs, and that traffic arrives via a virtual server port (that is, ). A load balancing decision is then made, and after the ADC has selected a real server, the traffic is forwarded to the TCP/UDP port of that real server. That port does not have to be it is possible to forward traffic to port 8080 of a real server even if the client is talking on of the VIP. The destination port of the real server is called the real server port. Health Checks The ADC needs to ensure back-end resources (the ComAssistant front-end servers) are available to receive forwarded traffic. Using health checks the ADC verifies that back-end resources are available. An HTTP health check is basically an HTTP request from the ADC to the real server port, on which the ADC waits to receive an HTTP reply from the HTTP service. The real server port is declared ACTIVE (available) when the real server sends an HTTP response indicating SUCCESS (so called HTTP 2xx OK). Putting It All Together Putting all these things together results in a basic load balancing configuration. The Brocade ADC presents virtual servers to the outside world, and then distributes traffic to its real servers. Clients access the virtual server via defined services (virtual server ports) and the traffic is forwarded to configured real server ports. The Brocade ADC runs health checks to maintain availability of its back end server resources. Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 4 of 24

5 THE BASIC TOPOLOGY Cluster-ID Back-end server PBX CAP HBR CA - MGMT CA Cluster-ID Port X Port Y Admin client (browser) Front-end servers with Web engines ADC 1 ADC 2 Users Port 8443 (SSL) or Port 7789 (HTTP) 1 50,000 Figure 1. The basic topology NOTE: The solution is set up with HTTPS access to the ComAssistant WebGUI only (via ). The HTTP port 7789 is not used, but if it were, it would be configured in the same way as is configured. The Load Balancer For this setup, a Brocade ServerIron 4G (non-ssl and without PREM license) is used and it has the following specifications: Dedicated management processor Dedicated traffic processor Dedicated acceleration ASIC 4 x Gigabit combo-ports (copper or fiber (via SFP)) Up to 1.5 Gigabits per second (Gbps) application level throughput Up to 5,000,000 concurrent sessions Up to 40,000 Layer 4 connections per second Up to 15,000 Layer 7connections per second Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 5 of 24

6 Configuration Prerequisites Before beginning the setup you need to record the following information: ComAssistant real server names ComAssistant real server ports (8443, 7778, 7788, and 7780) ComAssistant real server IP addresses Virtual Server IP address (VIP) Virtual Server ports (8443, 7778, 7788, and 7780) Content to use for health checks Table 1. Example of a setup with eight real servers Real Server Name Real Server IP Address Real Server Ports sg ,7778,7780,7788 sg ,7778,7780,7788 sg ,7778,7780,7788 sg ,7778,7780,7788 sg ,7778,7780,7788 sg ,7778,7780,7788 sg ,7778,7780,7788 sg ,7778,7780,7788 The health check for each of the real servers needs to ask for the URL: /tweb/public/req?ping&returntype=text via The reply to this request needs to contain the content : PortalGUI is alive which asserts that the front-end server is up and running. The virtual server IP should be and the virtual server should offer the following virtual server ports: 8443,7778,7780, and ADC #1 will use IP address ADC #2 will use IP address The ADC default gateway is Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 6 of 24

7 The solution uses a single multi-link trunk only. Traffic from the client to the virtual server and traffic from the load balancer to the real servers crosses the same link, which requires source-nat to force the traffic from the real servers back to the load balancer. Otherwise the real servers would reply via the router, which would result in communication problems. The load balancer needs to see all replies to keep its session table entries up-to-date and to do the reverse address translations. The IP addresses which are getting used for source-nat are and Port #1 of the load balancer is the client facing port and port #2 is a special port used for synchronization between the load balancer pair. ADC 1 ADC 2 Physical IP: Port 4 Physical IP: Source NAT IPs : /139 Gateway: VIRTUAL SERVER IP: Source NAT IPs : /139 Gateway: Sync VIRTUAL SERVER IP: Port 1 Port x / 2 Back-end subnet ComAssistant back-end server IP: Intranet IN TRANET ComAssistant front-end servers IP addresses: Default gateway s: Various client subnets Users 1-50,000 Figure 2. Front-end and back-end servers, clients, and the load balancer BUILDING THE CONFIGURATION The following high-level tasks are required: 1. Configure basic network connectivity and High Availability (HA) 2. Configure global parameters 3. Configure real servers and real server ports 4. Configure a virtual server and virtual server ports with bindings 5. Verify functionality Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 7 of 24

8 1. Configure Basic Network Connectivity and High Availability The load balancers must be configured. Connect a laptop to load balancer #1 using a serial straight-through cable (an EIA/TIA DB-9 serial cable (M/F) is shipped with the device). Use the following terminal settings: Baud: 9600 bps Data bits: 8 Parity: None Stop bits: 1 Flow control: None The following prompt appears: ServerIron> Establish physical connectivity (ensure load balancer #2 is still powered off). Connect port #1 of both load balancers to the router/client facing the subnet. Load Balancer #1 Get the load balancer s MAC address and configure the IP address and default gateway using the Command-Line Interface (CLI). Verify IP connectivity using PING. Save the configuration. ServerIron 4G>ena No password has been assigned yet... ServerIron 4G#show chassis power supply 1 failed power supply 2 failed power supply 1 to 2 from left to right fan 1 ok fan 2 ok fan speed set to high Current temperature : 39.0 C degrees Warning level : 65 C degrees, shutdown level : 75 C degrees Boot Prom MAC: 0012.f288.4a41 ServerIron 4G#conf t ServerIron 4G(config)#ip address ServerIron 4G(config)#ip default-gateway ServerIron 4G(config)#exit ServerIron 4G#ping Sending 1, 16-byte ICMP Echo to , timeout 5000 msec, TTL 64 Type Control-c to abort Reply from : bytes=16 time=4ms TTL=255 Success rate is 100 percent (1/1), round-trip min/avg/max=4/4/4 ms. ServerIron4G#write memory.write startup-config in progress..write startup-config done. ServerIron 4G# Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 8 of 24

9 Create a special sync VLAN (here VLAN #99) using port 4, disable spanning tree globally, activate HA, (using the MAC address from above), and set the pointer to the router/client facing port: ServerIron 4G#conf t ServerIron 4G(config)#vlan 99 ServerIron 4G(config-vlan-99)#untagged eth 4 ServerIron 4G(config-vlan-99)#exit ServerIron 4G(config)#no spanning-tree ServerIron 4G(config)#server backup ethe f288.4a41 vlan-id 99 ServerIron 4G(config)#server router-ports ethernet 1 Configure source-nat IPs and enable source-nat, and save the configuration: (config)#server source-nat-ip port-range 2 (config)#server source-nat-ip port-range 2 (config)#server source-nat (config)#write memory.write startup-config in progress..write startup-config done. (config) Load Balancer #2 Power on load balancer #2. Its configuration is very similar to load balancer #1, however the physical IP is different and the port range is 1 instead of 2. The MAC address stays the same as well as the other parameters. Establish a serial connection to load balancer #2 and follow these configuration instructions: ServerIron 4G>ena No password has been assigned yet... ServerIron 4G#conf t ServerIron 4G(config)#ip address ServerIron 4G(config)#ip default-gateway ServerIron 4G(config)#exit ServerIron 4G#ping Sending 1, 16-byte ICMP Echo to , timeout 5000 msec, TTL 64 Type Control-c to abort Reply from : bytes=16 time=4ms TTL=255 Success rate is 100 percent (1/1), round-trip min/avg/max=4/4/4 ms. ServerIron4G#write memory.write startup-config in progress..write startup-config done. ServerIron 4G#conf t ServerIron 4G(config)#vlan 99 ServerIron 4G(config-vlan-99)#untagged eth 4 ServerIron 4G(config-vlan-99)#exit ServerIron 4G(config)#no spanning-tree ServerIron 4G(config)#server backup ethe f288.4a41 vlan-id 99 ServerIron 4G(config)#server router-ports ethernet 1 (config)#server source-nat-ip port-range 1 (config)#server source-nat-ip port-range 1 (config)#server source-nat (config)#write memory.write startup-config in progress..write startup-config done. (config) Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 9 of 24

10 Connect the load balancers using port #4. Ensure HA (High Availability) comes up between them using the command show server backup on BOTH load balancers: (config)#show server backup Server Backup port = 4 Backup group id = 0 Switch state = Standby SLB state = 0 Peer sync state = 0 SLB Partner MAC valid= 1 SLB Partner MAC = 0012.f27c.a580 SLB Partner VLAN ID = 99 SLB Partner port cnt = 64 SLB Backup preference = 0 minutes SLB Backup timer = 1000 milliseconds [ ] Routers ports = 1, Partner Router ports= 1 Server ports = 0, Partner Server ports= 0 The switch state of one of the ServerIrons should be Standby and the other Active. The SLB state of both ServerIrons should be 0. Both ServerIrons should show the MAC address of the partner behind SLB Partner MAC (check via show chassis ) at both ServerIrons. The VLAN ID used for HA is Configure Global Parameters Begin to configure some global parameters on load balancer #1. A few settings must be changed, and the most important are the port profiles for all real server ports being used. The port profiles define: Protocol type (UDP/TCP) Health check interval (health check every x seconds) and regularity of health checks Number of unsuccessful health checks before declaring a real server port is down Number of successful health checks before declaring a real server port is up Four virtual server/real server ports are used in this example: 8443, 7778, 7780,and Therefore a port profile needs to be defined for each of these ports. All traffic is TCP traffic The load balancer should check the server status every 10 seconds A real server port will be declared as down as soon as the health check goes wrong twice in a row; and the session timeout from the load balancer point of view should be 60 minutes Three successful health checks in a row will result in the real server being declared up again Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 10 of 24

11 Table 2. Health check settings server no-fast-bringup Ensures that health checks are successful up to Layer 7 before declaring a server as available no server use-simple-ssl-health-check SSL health checks are based on content as well and not only the SSL handshake server Profile for port 80 tcp 60 tcp keepalive 10 2 bringup-retries 3 Timeout of 60 minutes It is TCP and the health check is every 10 seconds 2 failed means that the server is down 3 successful health checks in a row to declare the server up The configuration instructions to do this for all virtual/real server ports are as follows: (config)#server no-fast-bringup (config)#no server use-simple-ssl-health-check (config)#server (config-port-8443)#tcp 60 (config-port-8443)#tcp keepalive 10 2 (config-port-8443)#bringup-retries 3 (config-port-8443)#server (config-port-7778)#tcp 60 (config-port-7778)#tcp keepalive 10 2 (config-port-7778)#bringup-retries 3 (config-)#server (config-port-7780)#tcp 60 (config-port-7780)#tcp keepalive 10 2 (config-port-7780)#bringup-retries 3 (config-port-7780)#server (config-port-7788)#tcp 60 (config-port-7788)#tcp keepalive 10 2 (config-port-7788)#bringup-retries 3 (config-port-7788)#exit (config)# You can also configure other global settings: Users with passwords Authentication using these users Host name for the load balancer Domain name for the load balancer SNTP server Syslog server Time zone Health check for the ComAssistant front-end Web servers Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 11 of 24

12 The examples above are covered here, but there are additional settings you might use. For more information, contact your Brocade Systems Engineer. Table 3. Global setting commands with explanations username XYZ password MYPASS Creates a new user with the username XYZ and password MYPASS aaa authentication web-server default local hostname NAME Log in via ssh and WebGui will use the local user DB Changes host name to NAME ip dns domain-name domain.com Changes domain to domain.com sntp server a.b.c.d Sets SNTP server to a.b.c.d logging q.w.e.r Sets syslog server to q.w.e.r clock timezone gmt GMT-08 clock summertime http match-list Alive GMT-08, summertime Content match rule with the name Alive default down Real server is down by default up simple "PortalGUI is alive" server port-policy HTTPS-HC protocol ssl protocol ssl url "GET /tweb/public/req?ping&returntype=t ext HTTP/1.1\r\nHost: \r\n\r\n" protocol ssl content-match Alive Real server is declared as up when the health check answer contains the string in double quotes A port-policy with the name HTTPS-HC is declared to use the SSL protocol and will send an HTTP request as specified Expected answer (see above) The health check will send the virtual server IP as host-header, and this is necessary so that it looks like it is coming from a request to the virtual server. NOTE: Be careful with the question mark (?) inside the URL string in the second-to-last (config-portpolicy-https-hc) statement. You need to escape it using a backslash as shown. (config)#username test password test123 (config)#aaa authentication web-server default local (config)#aaa authentication login default local (config)#hostname myhost (config)#ip dns domain-name domain.com (config)#sntp server (config)#logging (config)#clock timezone gmt GMT+01 Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 12 of 24

13 (config)#clock summertime (config)#http match-list Alive (config-http-ml-alive)#default down (config-http-ml-alive)#up simple PortalGUI is alive (config-http-ml-alive)#server port-policy HTTPS-HC (config-port-policy-https-hc)#protocol ssl (config-port-policy-https-hc)#protocol ssl url GET /tweb/public/req\?ping&returntype=test HTTP/1.1\r\nHost: \r\n\r\n (config-port-policy-https-hc)#protocol ssl content-match Alive 3. Configure Real Servers and Real Server Ports Begin to create the real servers with the real server port at load balancer #1. They all look the same except for their IP addresses and the real server name. The real server IP addresses are through 108. The ports needed are 8443, 7780, 7788, and Table 4. Creating real server ports server real sg Creates a real server with the name sg and the IP address Real server will be used later and is getting a health check using the port policy with the name HTTPS-HC These three additional ports which will be used later These four ports are part of the same health check group, so the load balancer will take them all down as soon as one of them has a problem This needs to be repeated for all the real servers: (config)#server real sg (config-rs-sg016101)# (config-rs-sg016101)# (config-rs-sg016101)# (config-rs-sg016101)# (config-rs-sg016101)# (config-rs-sg016101)# (config-rs-sg016101)#server real sg (config-rs-sg016102)# (config-rs-sg016102)# (config-rs-sg016102)# (config-rs-sg016102)# (config-rs-sg016102)# (config-rs-sg016102)# (config-rs-sg016102)#server real sg (config-rs-sg016103)# (config-rs-sg016103)# (config-rs-sg016103)# (config-rs-sg016103)# (config-rs-sg016103)# (config-real-sg016103)# Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 13 of 24

14 (config-real-sg016103#server real sg (config-real-sg016104)# (config-real-sg016104)# (config-real-sg016104)# (config-real-sg016104)# (config-real-sg016104)# (config-real-sg016104)# (config-real-sg016104)#server real sg (config-real-sg016105)# (config-rs-sg016105)# (config-rs-sg016105)# (config-rs-sg016105)# (config-rs-sg016105)# (config-rs-sg016105)# (config-rs-sg016105)#server real sg (config-rs-sg016106)# (config-rs-sg016106)# (config-rs-sg016106)# (config-rs-sg016106)# (config-rs-sg016106)# (config-rs-sg016106)# (config-rs-sg016106)#server real sg (config-rs-sg016107)# (config-rs-sg016107)# (config-rs-sg016107)# (config-rs-sg016107)# (config-rs-sg016107)# (config-rs-sg016107)# (config-rs-sg016107)#server real sg (config-rs-sg016108)# (config-rs-sg016108)# (config-rs-sg016108)# (config-rs-sg016108)# (config-rs-sg016108)# (config-rs-sg016108)# (config-rs-sg016108)# exit (config)# Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 14 of 24

15 4. Configure Virtual Server and Virtual Server Ports with Bindings Begin by creating a virtual server with the IP address The ports accessible from the client (virtual server ports) are 8443, 7780, 7788, and All ports need to be sticky, because ServerIron needs to remember the server assigned to a client during the first request so that subsequent requests will be sent to the same real server. This needs to happen independently from the port. Table 5. Creating Virtual Server Ports server virtual sg sticky-age 60 sticky-age-multiplier 96 sticky sticky sticky sticky track-group bind 8443 sg sg sg sg bind 8443 sg sg sg sg bind 7780 sg sg sg sg bind 7780 sg sg sg sg bind 7788 sg sg sg sg bind 7788 sg sg sg sg bind 7778 sg sg sg sg bind 7778 sg sg sg sg Creates a virtual server with the name sg and the IP address Clients need to stick to the server selected for them and this needs to be the case over a period of days, such as the weekend, in this example, 96 * 60 minutes = 4 days. Stickiness is important for all ports Stickiness across different ports Binds the real server ports together with the virtual server ports (config)#server virtual sg (config-vs-sg016137)#sticky-age 60 (config-vs-sg016137)#sticky-age-multiplier 96 (config-vs-sg016137)# sticky (config-vs-sg016137)# sticky (config-vs-sg016137)# sticky (config-vs-sg016137)# sticky (config-vs-sg016137)#track-group (config-vs-sg016137)#bind 8443 sg sg sg sg (config-vs-sg016137)#bind 8443 sg sg sg sg (config-vs-sg016137)#bind 7780 sg sg sg sg (config-vs-sg016137)#bind 7780 sg sg sg sg (config-vs-sg016137)#bind 7788 sg sg sg sg (config-vs-sg016137)#bind 7788 sg sg sg sg (config-vs-sg016137)#bind 7778 sg sg sg sg (config-vs-sg016137)#bind 7778 sg sg sg sg Now return to Step 2 and repeat Steps 2, 3 and 4 for load balancer #2. Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 15 of 24

16 5. Verify functionality Verify again that the master and backup status of the ServerIrons is correct, using the command show server backup at both ServerIrons. One ServerIron needs to be Active and the other Standby. The Server Backup Port should be 4 and the SLB Partner VLAN ID should be 99. The number of router ports and partner router ports should be 1, whereas the number of server ports and partner server ports should be 0. SLB-ServerIron 4G#show server backup Server Backup port = 4 Backup group id = 0 Switch state = Active SLB state = 0 Peer sync state = 0 SLB Partner MAC valid = 1 SLB Partner MAC = 0012.f27c.3f60 SLB Partner VLAN ID = 99 SLB Partner port cnt = 64 SLB Backup preference = 0 minutes [ ] Router ports = 1, Partner Router ports = 1 Server ports = 0, Partner Server ports = 0 Verify that all real servers are up and running by using the command show server bind at both ServerIrons. ServerIron 4G(config)#show server bind Bind info Virtual server: sg Status: enabled IP: > sg016101: , 8443 (Active) sg016102: , 8443 (Active) sg016103: , 8443 (Active) sg016104: , 8443 (Active) sg016105: , 8443 (Active) sg016106: , 8443 (Active) sg016107: , 8443 (Active) sg016108: , 8443 (Active) > sg016101: , 7780 (Active) sg016102: , 7780 (Active) sg016103: , 7780 (Active) sg016104: , 7780 (Active) sg016105: , 7780 (Active) sg016106: , 7780 (Active) sg016107: , 7780 (Active) sg016108: , 7780 (Active) > sg016101: , 7788 (Active) sg016102: , 7788 (Active) sg016103: , 7788 (Active) sg016104: , 7788 (Active) sg016105: , 7788 (Active) sg016106: , 7788 (Active) sg016107: , 7788 (Active) sg016108: , 7788 (Active) Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 16 of 24

17 > sg016101: , 7778 (Active) sg016102: , 7778 (Active) sg016103: , 7778 (Active) sg016104: , 7778 (Active) sg016105: , 7778 (Active) sg016106: , 7778 (Active) sg016107: , 7778 (Active) sg016108: , 7778 (Active) 4G(config)# Check the virtual server statistics all counters should be 0 (no testing done so far): ServerIron 4G(config)#show server virtual Virtual Servers Info Name: sg State: Enabled IP: : 1 Pred: least-conn ACL-Id: 0 TotalConn: 0 VIP state: healthy Port State Sticky Concur Proxy DSR CurConn TotConn PeakConn default enabled NO NO NO NO enabled YES NO NO NO enabled YES NO NO NO enabled YES NO NO NO enabled YES NO NO NO ServerIron 4G(config)# Establish connections to the ComAssistant WebGUI using some clients (connecting to :8443 ). Counters should begin to increase: ServerIron 4G(config)#show server virtual Virtual Servers Info Name: sg State: Enabled IP: : 1 Pred: least-conn ACL-Id: 0 TotalConn: 0 VIP state: healthy Port State Sticky Concur Proxy DSR CurConn TotConn PeakConn default enabled NO NO NO NO enabled YES NO NO NO enabled YES NO NO NO enabled YES NO NO NO enabled YES NO NO NO ServerIron 4G(config)# Failover test: Get the output of show server backup at both ServerIrons. Unplug the cable connected to port 1 at the ServerIron showing Active. The active box should move to Standby status and the old Standby ServerIron to Active status. Ensure that it is still possible to connect to the virtual sever using the virtual service. Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 17 of 24

18 COMPLETING THE CONFIGURATION For Load Balancer #1 Building configuration... Current configuration : 6093 bytes ver eTI2 server backup ethe f27c.0983 vlan-id 99 server no-fast-bringup no server use-simple-ssl-health-check server tcp 60 tcp keepalive 10 2 bringup-retries 3 server tcp 60 tcp keepalive 10 2 bringup-retries 3 server tcp 60 tcp keepalive 10 2 bringup-retries 3 server tcp 60 tcp keepalive 10 2 bringup-retries 3 server source-nat server source-nat-ip port-range 2 server source-nat-ip port-range 2 server router-ports ethernet 1 context default server port-policy HTTPS-HC protocol ssl protocol ssl url "GET /tweb/public/req?ping&returntype=text HTTP/1.1\r\nHost: \r\n\r\n" protocol ssl content-match Alive server real sg Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 18 of 24

19 server real sg server real sg server real sg server real sg server real sg server real sg Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 19 of 24

20 server real sg server virtual sg sticky-age 60 sticky-age-multiplier 96 sticky sticky sticky sticky track-group bind 8443 sg sg sg sg bind 8443 sg sg sg sg bind 7780 sg sg sg sg bind 7780 sg sg sg sg bind 7788 sg sg sg sg bind 7788 sg sg sg sg bind 7778 sg sg sg sg bind 7778 sg sg sg sg vlan 1 name DEFAULT-VLAN by port no spanning-tree vlan 99 by port untagged ethe 4 no spanning-tree http match-list Alive default down up simple "PortalGUI is alive" aaa authentication web-server default local aaa authentication login default local enable telnet password... no enable aaa console hostname myhost ip address ip default-gateway ip dns domain-name domain.com logging telnet server username test password... clock summer-time clock timezone gmt GMT+01 sntp server Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 20 of 24

21 For Load Balancer #2 Building configuration... Current configuration : 6093 bytes ver eTI2 server backup ethe f27c.0983 vlan-id 99 server no-fast-bringup no server use-simple-ssl-health-check server tcp 60 tcp keepalive 10 2 bringup-retries 3 server tcp 60 tcp keepalive 10 2 bringup-retries 3 server tcp 60 tcp keepalive 10 2 bringup-retries 3 server tcp 60 tcp keepalive 10 2 bringup-retries 3 server source-nat server source-nat-ip port-range 1 server source-nat-ip port-range 1 server router-ports ethernet 1 context default server port-policy HTTPS-HC protocol ssl protocol ssl url "GET /tweb/public/req?ping&returntype=text HTTP/1.1\r\nHost: \r\n\r\n" protocol ssl content-match Alive server real sg Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 21 of 24

22 server real sg server real sg server real sg server real sg server real sg server real sg server real sg Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 22 of 24

23 server virtual sg sticky-age 60 sticky-age-multiplier 96 sticky sticky sticky sticky track-group bind 8443 sg sg sg sg bind 8443 sg sg sg sg bind 7780 sg sg sg sg bind 7780 sg sg sg sg bind 7788 sg sg sg sg bind 7788 sg sg sg sg bind 7778 sg sg sg sg bind 7778 sg sg sg sg vlan 1 name DEFAULT-VLAN by port no spanning-tree vlan 99 by port untagged ethe 4 no spanning-tree http match-list Alive default down up simple "PortalGUI is alive" aaa authentication web-server default local aaa authentication login default local enable telnet password... no enable aaa console hostname myhost ip address ip default-gateway ip dns domain-name domain.com logging telnet server username test password... clock summer-time clock timezone gmt GMT+01 sntp server Configuring the Brocade ServerIron to Enable Peak Performance of the Siemens ComAssistant 23 of 24

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