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1-15

Static Virtual LANs (VLANs)

VLAN Operating Rules

tagged member must have the same VID as that carried by the inbound,

tagged packets generated on that VLAN.)

Figure 1-8. Tagged VLAN Operation

See also “Multiple VLAN Considerations” on page 1-17.

Caution Rate-limiting may behave unpredictably on a VLAN if the VLAN spans

multiple modules or port-banks. This also applies if a port on a different

module or port-bank is added to an existing VLAN. HP does not recommend

configuring rate-limiting on VLANs that include ports spanning modules or

port-banks.

In figure 1-9 ports 2, 3, and 24 form one VLAN. The ports are in the same port-

bank, which includes ports 1 through 24. Ports 28, 29, and 32 form a second

VLAN. These ports are also in the same port-bank, which includes ports 25

through 48. Rate-limiting will operate as expected for these VLANs.

Yes

Port “X” receives

an inbound,

tagged Packet

From VLAN “A”.

Is port

“X” a tagged

member of

VLAN “A”?

Forward the

packet to any port

“Y” on VLAN “A”

for outbound

transmission.

Drop the

packet.

Note that the outbound

port can be either a

tagged or untagged

member of the VLAN.

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