Extreme Networks ExtremeWare Enterprise Manager, Installation And User Manual

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E
XTREME
W
ARE
E
NTERPRISE
M
ANAGER
I
NSTALLATION AND
U
SER
G
UIDE
9-3
D
ISPLAYING THE
V
IRTUAL
C
HASSIS
S
TACK
T
OPOLOGY
Each Summit device uses the Extreme Discovery Protocol (EDP) to identify all
neighboring Summits connected via a Summit Virtual Chassis. The Virtual Chassis
Stack Manager uses SNMP to collect this information about VC connections from each
managed Summit switch in the ExtremeWare Enterprise Manager database. Using this
information, the VC stack Manager constructs a collection of VC stacks and leftover
Summits (orphan Summits) and VCs (orphan VCs).
This process can identify many, but not all stack topologies. There are two basic types of
VC stack configurations: single stacks and parallel stacks. Within the Enterprise
Manager, a Summit switch or a VC can belong to only one VC stack. Thus, if a Summit
switch has connections to multiple VCs in separate stacks, the Enterprise Manager may
not be able to place the switch correctly.
You can edit the VC stack configurations to reflect the actual managed stack
configurations in your network. You can also create stack representations manually,
independent of the stack identification process.
Once you have created or edited the VC stacks manually, the representations in the
Enterprise Manager database will not change unless you change them manually, or
unless you explicitly request a re-identification using the Identify function (see
“Identifying the Virtual Chassis Stack Topology”).
D
ISPLAYING THE
V
IRTUAL
C
HASSIS
S
TACK
T
OPOLOGY
To display the current Virtual Chassis (VC) stack topology, click the VC button in the
ExtremeWare Enterprise Manager Navigation toolbar. The Virtual Chassis Stack
Manager window is displayed, as shown in Figure 9-1.