Gebruiksaanwijzing /service van het product V7300 van de fabrikant 3Com
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http://www.3com.com/ Part Number 900-0153-01 AA Published August 2004 3Com ® V7300 V oice Applications Suite Unified Messaging Suite Intelligent Mirr oring Guide VCX ™ V7000 IP Telephony Solution System Release 5.
3Com Corporati on 350 Campus Drive Marlbor ough, MA 01752-3064 Copyright © 2004, 3Com Corporation. All right s reserved. No part of this documentation may b e reproduced in any form or by any means or used to make any derivative work (such as translation, transformation , or adaptation) without written permission fro m 3Com Corporation.
3 C ONTENTS A BOUT T HIS G UIDE Assumptions 5 Conventions 5 Notices 5 T ext 6 Related Docum entation 6 Y our Comments 7 I NITIAL C ONFIGURATION Overview 9 Hardwar e Prerequisites 9 IP Configuration 10.
4 Balanced Intelligent Mirroring Policy 22 Switching Between Active and Standby States 22 O PERATION V erifying Intelligent Mirroring Operation 25 Manual Switchover 26 V erifying Ser ver Synchron izat.
A BOUT T HIS G UIDE This chapter contains an overview of this guide, lists guide conventions, related documentation, and product compatibility . Assumptions This guide is inten ded for system administ.
6 A BOUT T HIS G UIDE Te x t Ta b l e 2 lists text conventions that are used in this guide. Related Documentation The following lists 3Com documents that contain additional information about the products in this re lease.
Your Comments 7 Y our Comments Y our suggestions are important to us because we want to make our documentation more useful to you. Please send e-mail comments about this guide or any of the 3Com V oice Pr oducts documentation and Help systems to: VOICE_Techpubs_comments@3com.
8 A BOUT T HIS G UIDE.
1 I NITIAL C ONFIGURATION This chapter provides an overview of how to configure Intelligent Mirroring on a Primary and Seco ndary server for the V7300 V oice Applications Suite. Intelligent Mirroring is the mirr or ing of application data on two independently running servers.
10 C HAPTER 1: I NITIAL C ONFI GURATION IP Configuration 3Com recommends that you define the IP configuration usin g the /etc/hosts files on the two systems. The /etc/hosts file on each server must contain identical information about the Intelligent Mirroring configuration.
IP Configuration 11 CAUTION: IP addresses 192.168.126.3 and 192.168.126.4 are the dynamic alias IP addresses. Do not associa te them with any network interface.
12 C HAPTER 1: I NITIAL C ONFI GURATION Figure 1 Dual Network Configuration System 1 (Primary Server) ■ System Name — voipbox1 ■ IP Address (subnetwork 126) — 192.168.126.1 (associated with the primary network interface on the Primary Server) ■ IP Address (subnetwork 127) — 192.
Domain Name System (DNS) Conf iguration 13 Sample /etc/hosts File Entries for a Dual Network Configuration This section describes entries that you would add to the /etc/ho sts file if your configuration was identical to the config uration examples listed earlier in this section.
14 C HAPTER 1: I NITIAL C ONFI GURATION 3 Restart the named ser vice on the DNS server to update the ser ver settings with the new configuration information. For any PC on which you intend to run an e-mail client program, configure the PC so that it uses, as its primary DNS server , the DNS server that you have just configured.
Domain Name System (DNS) Conf iguration 15 Sample file "vcx.wan.3com.com" $TTL 86400 @ IN SOA vcx.wan.3com.com. roo t.vcx.wan.3com.com. ( 200210210; serial, todays date + tod ays serial # 8H.
16 C HAPTER 1: I NITIAL C ONFI GURATION Enabling Secure Copy (SCP) and Secure Shell (SSH) Commands UMS uses shell scripts to synchr oniz e the two servers. These scripts use the SCP and SSH commands. Fo r thes e commands to work properly in this environment, you must configure each UMS server so that the commands do not prompt for a passwor d.
Network Time Protocol (NTP) Configuration 17 oscillator to stratum 8 in order to allow the two systems to use a lower stratum server (7 or lower) if one is available. By default, the system uses this drift file: /etc/ntp/drift . 3 On the voipbox2 system, create the /etc/ntp.
18 C HAPTER 1: I NITIAL C ONFI GURATION.
2 I NSTALLATION This chapter describes how to insta ll Intelligent Mirr oring on the Primary Server and the Se condary Server . Overview Follow these instructions, in the or d er that they are given , when you install and configure the servers. 1 Completely install the Pr imary Server before you begin to install the Secondary Server .
20 C HAPTER 2: I NSTALLATION Sample Installation Script (for voipbox1) When you first start a VCX V7000 server , a firstboot script is run. Th e script asks you questions and conf igures the software based on your answers.
Intelligent Mirroring Active/Standby Policy 21 The example answers in this script assume that you are using voipbox2, that voipbox2 will be the secondar y se rver , and that voipbox1 will be the primary ser ver .
22 C HAPTER 2: I NSTALLATION For new installations, the policy is set to Primary by default. T o configure the primary policy: 1 Edit this f ile on the P rimary Server : /usr/app/app.
Intelligent Mirroring Active/Standby Policy 23 When the Primary Server is in t he standby state, it periodically checks th e value of IM_policy and, depending on the value, the Primary Server may switch from the standby state to the active state. ■ If IM_policy is set to primary , a 5- minute timer is activated.
24 C HAPTER 2: I NSTALLATION.
3 O PERATION This chapter describes how to verify the proper operation of Intelligent Mirr oring and sync hronizati on between the servers. It also describes how to manually switch server states a nd how to resynchronize the databases and file systems on the two serv ers if that becomes necessary .
26 C HAPTER 3: O PERATION Manual Switchover Y ou can manually switch either server to the active or standby state, provided that you have r oot privileges.
Verifying Server Synchronization 27 If the databases are not synchr onized, you see a list of the recor ds that are dif ferent. The synchronization of the Primar y a nd Secondar y ser vers is a real-time activity . The tblcmp utility gives accura te results only on an idle system (one that is not pr ocessing telephone calls).
28 C HAPTER 3: O PERATION This command creates a shell script (/usr/app/app.dir/dif fmsg.rcp) that you can run from the command line to copy the missing files from the other server .
I NDEX B balanced mirroring, policy 22 C comments on documentation 7 configuration dual network 11 ha rdw a re 9 IP addresses 10 overview 9 single network 10 conventions text 5 D database synchronizat.
30 I NDEX synchronizing databases 27 file systems 27 servers 26 time 16 with scp and ssh co mmands 16 T time synchronization 16 U users, intended 5 V verifying database synch ronization 27 file system.
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