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440 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
VLAN overview
13
FIGURE 92 VLAN with dynamic ports—all ports are active when you create the VLAN
SUBNET Ports in a new protocol VLAN that do not receive traffic for the VLAN protocol age out after
10 minutes and become candidate ports. Figure 93 shows what happens if a candidate port
receives traffic for the VLAN protocol.
FIGURE 93 VLAN with dynamic ports—candidate ports become active again if they receive
protocol traffic
A = active port
C = candidate port
When you add ports dynamically,
all the ports are added when you add
the VLAN.
AAA
A
AA
A
A
Por
ts that time out remain candidates
for membership in the VLAN and become active
again if they receive traffic for the VLAN’s
protocol, IP sub-net, IPX network, or
AppleTalk cable range.
When a candidate port rejoins a VLAN,
the timeout for that port becomes 20 minutes.
Thus, the port remains an active member of
the VLAN even if it does not receive traffic
for 20 minutes. After that, the port becomes
a candidate port again.
CC
AAAA
A
A