53
HA C
ONFIGURATION
HA Overview
The Switch 7758 supports high availability (HA) feature. This feature is to achieve a
high availability of the system and to recover the system as soon as possible in the
event of failures so as to shorten the mean time between failures (MTBF) of the
system.
The functions of HA are mainly implemented by the application running on Fabric
module. A Switch 7758 has two Fabrics which are working in the master-slave
mode: one module works in master mode as the master module, the other works
in slave mode as a backup module. If the master-slave system detects a fault in the
master module, a hot master-slave switchover will be performed automatically.
The slave module will try to connect and control the system bus while the original
master module will try to disconnect with the bus. Thus, the master-slave
switchover of the active system is completed, and at the same time the original
master module is reset to function as the slave module. Therefore, even if the
master module fails, the slave module can also take its role to ensure that the
Switch 7758 runs normally.
The Switch 7758 supports hot swap of Fabrics. The hot swap of master modules
will cause switchover master/slave.
The Switch 7758 supports manually switchover master/slave. You can change the
current module state manually by executing command.
c
CAUTION:
The HA feature of the Switch 7758 can detect the software upgrade of
the two Fabric with at least one Fabric being active. However, the Fabric and the
I/O Module of the Ethernet switches must be identical in their software version,
otherwise they cannot work normally. So that during the upgrade, you are
recommended to restart the whole switch after the Fabric executes the
boot
boot-loader
command, to ensure the normal operating of the switch.
The configuration file of the slave module is copied from the master module in real
time, which can ensure that the slave system continues to operate in the same
configuration as that of the original active system after the master-slave
switchover. The Switch 7758 supports automatic synchronization of configuration
file. The active system stores its configuration file and backup the configuration
file to the slave system simultaneously when the master’s configuration file is
modified, so as to ensure the consistency of the configurations of the active
system and slave system. And you can also use command to manually synchronize
the configuration file of the master and slave module.
Besides, the system can monitor the power supply and the operating environment
of the system and give timely alarms to avoid the escalation of failures and ensure
safe operations of the system.
Summary of Contents for Switch 7754
Page 32: ...32 CHAPTER 1 CLI OVERVIEW ...
Page 70: ...70 CHAPTER 5 LOGGING IN USING MODEM ...
Page 76: ...76 CHAPTER 7 LOGGING IN THROUGH NMS ...
Page 86: ...86 CHAPTER 9 CONFIGURATION FILE MANAGEMENT ...
Page 120: ...120 CHAPTER 13 ISOLATE USER VLAN CONFIGURATION ...
Page 126: ...126 CHAPTER 14 SUPER VLAN ...
Page 136: ...136 CHAPTER 16 IP PERFORMANCE CONFIGURATION ...
Page 152: ...152 CHAPTER 17 IPX CONFIGURATION ...
Page 164: ...164 CHAPTER 19 QINQ CONFIGURATION ...
Page 172: ...172 CHAPTER 21 SHARED VLAN CONFIGURATION ...
Page 182: ...182 CHAPTER 22 PORT BASIC CONFIGURATION ...
Page 198: ...198 CHAPTER 24 PORT ISOLATION CONFIGURATION ...
Page 208: ...208 CHAPTER 25 PORT SECURITY CONFIGURATION ...
Page 224: ...224 CHAPTER 27 DLDP CONFIGURATION ...
Page 232: ...232 CHAPTER 28 MAC ADDRESS TABLE MANAGEMENT ...
Page 240: ...240 CHAPTER 29 CENTRALIZED MAC ADDRESS AUTHENTICATION CONFIGURATION ...
Page 280: ...280 CHAPTER 30 MSTP CONFIGURATION ...
Page 348: ...348 CHAPTER 35 IS IS CONFIGURATION ...
Page 408: ...408 CHAPTER 39 802 1X CONFIGURATION ...
Page 412: ...412 CHAPTER 40 HABP CONFIGURATION ...
Page 422: ...422 CHAPTER 41 MULTICAST OVERVIEW ...
Page 426: ...426 CHAPTER 42 GMRP CONFIGURATION ...
Page 480: ...480 CHAPTER 47 PIM CONFIGURATION ...
Page 506: ...506 CHAPTER 48 MSDP CONFIGURATION ...
Page 552: ...552 CHAPTER 51 TRAFFIC ACCOUNTING CONFIGURATION ...
Page 570: ...570 CHAPTER 53 HA CONFIGURATION ...
Page 582: ...582 CHAPTER 54 ARP CONFIGURATION SwitchA arp protective down recover interval 200 ...
Page 622: ...622 CHAPTER 58 DHCP RELAY AGENT CONFIGURATION ...
Page 684: ...684 CHAPTER 61 QOS CONFIGURATION ...
Page 718: ...718 CHAPTER 63 CLUSTER ...
Page 738: ...738 CHAPTER 67 UDP HELPER CONFIGURATION ...
Page 752: ...752 CHAPTER 69 RMON CONFIGURATION ...
Page 772: ...772 CHAPTER 70 NTP CONFIGURATION ...
Page 796: ...796 CHAPTER 72 FILE SYSTEM MANAGEMENT ...
Page 802: ...802 CHAPTER 73 BIMS CONFIGURATION ...
Page 814: ...814 CHAPTER 74 FTP AND TFTP CONFIGURATION ...
Page 830: ...830 CHAPTER 75 INFORMATION CENTER ...
Page 836: ...836 CHAPTER 76 DNS CONFIGURATION ...
Page 852: ...852 CHAPTER 77 BOOTROM AND HOST SOFTWARE LOADING ...
Page 858: ...858 CHAPTER 78 BASIC SYSTEM CONFIGURATION DEBUGGING ...