Stacking For High Availability Topologies - IBM RackSwitch G8000 Application Manual

Stacking for High Availability Topologies

© Copyright IBM Corp. 2011
Verifying AMP Operation
Display AMP group information to verify that the AMP loop is healthy.
>> # show active-multipath group 1 information
Group 1: enabled, topology UP
Port 3: access
State : forwarding
Peer
Port 4: aggregator
State : forwarding
Peer
Verify that the AMP topology is UP, and that each link state is set to forwarding.
A stack is a group of up to six RackSwitch G8000 devices that work together as a
unified system. Because the multiple members of a stack acts as a single switch
entity with distributed resources, high-availability topologies can be more easily
achieved.
In Figure 36, a simple stack using two switches provides full redundancy in the
event that either switch were to fail. As shown with the servers in the example,
stacking permits ports within different physical switches to be trunked together,
further enhancing switch redundancy.
Figure 36. High Availability Topology Using Stacking
Enterprise
Routing Switch
Trunk
Internet
Trunk
For more information on stacking, see
: 00:22:00:ac:bd:00
aggregator, priority 10
: 00:25:03:49:82:00
aggregator, priority 1
Cross-Stack
Stacked Switches
Trunk
Stack
Links
Cross-Stack
Trunk
"Stacking" on page
Server
NIC 1
NIC 2
Server
NIC 1
NIC 2
147.
Chapter 23. Basic Redundancy
291