Planning a Switched Network
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893-878-B
shows the legal feeder link connections between a designated edge
switch in each community. In this configuration, ports 1 and 2 of switches C
and D are configured for feeder mode and are part of the same virtual LAN.
Because the feeder links are connected only to the edge switch in each
community, one of the links is designated an active link and the other link is
designated a standby link. Redundancy and connectivity between communities
is provided without causing data loop or connectivity problems in the
community.
Use a tree topology configuration to connect three or more switch
communities. This configuration provides redundancy between communities as
well as providing network connectivity. Remember to maintain the edge switch
rule, discussed earlier in this section, when designing the tree topology
configuration. Doing so prevents you from accidentally creating a data loop
configuration.
shows an unsupported configuration that contains a
loop of switch communities.
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