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Appendix B 505
Administration of MC/ServiceGuard
How MC/ServiceGuard Works
Figure B-2 MC/ServiceGuard Package Switchover: After the Switch
Example 2: MC/ServiceGuard Local Network
Switching
The example below shows two SG nodes connected by one virtual LAN.
LANs 0 and 1 are connected by a bridge and act as one subnet. Node 1
and node 2 communicate by way of LAN 0. LAN 1 is in standby mode.
Figure B-3 MC/ServiceGuard LAN Switchover: Before the Switch
Package
C Mirror
Bridge
Package A
Package F
Package E
Package D
Package C
Root 1
Root 2
Root 3
Root 2
Mirror
Node 1
Node 2
Node 3
Package
A Disk
Package
F Disk
Package
E Disk
Package
D Disk
Package
C Disk
Package
B Disk
Package
A Mirror
Package
D Mirror
Package
F Mirror
Package
E Mirror
Package
B Mirror
LAN 0
LAN 1
Bridge
LAN 1
LAN 0
LAN 1
LAN 0
NODE 1
NODE 2
LAN 0
LAN 1