Dell PowerConnect B-FCXs, Configuration Manual

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PowerConnect B-Series FCX Configuration Guide 479
53-1002266-01
Configuring super aggregated VLANs
13
FIGURE 102 Example of a super aggregated VLAN application
In this example, a collocation service provides private channels for multiple clients. Although the
same devices are used for all the clients, the VLANs ensure that each client receives its own Layer
2 broadcast domain, separate from the broadcast domains of other clients. For example, client 1
cannot ping client 5.
The clients at each end of a channel appear to each other to be directly connected and thus can be
on the same subnet and use network services that require connection to the same subnet. In this
example, client 1 is in subnet 192.168.1.0/24 and so is the device at the other end of client 1
channel.
Because each VLAN configured on the core devices is an aggregate of multiple client VLANs, the
aggregated VLANs greatly increase the number of clients a core device can accommodate.
This example shows a single link between the core devices. However, you can use a trunk group to
add link-level redundancy.
Client 1
Port1/1
VLAN 101 Client 3
Port1/3
VLAN 103 Client 5
Port1/5
VLAN 105
. . . . . .
Client 1
192.168.1.69/24
209.157.2.12/24
Client 6
Port1/1
VLAN 101
Client 8
Port1/3
VLAN 103
Client 10
Port1/5
VLAN 105
. . . . . .
Port s 1/1 - 1/5
Unt a gged
Port s 1/1 - 1/5
Unt a gged
Device A
Tag Type 8100
Port2/1
T
a gged
Port2/1
T
a gged
Device B
Tag Type 8100
Port3/1
Unt
a gged
Port3/2
Unt
a gged
VLAN Aggregation
Enabled
Port4/1
T
a gged
Port4/1
T
a gged
VLAN Aggregation
Enabled
Port3/1
Unt
a gged
Port3/2
Unt
a gged
Port2/1
T
a gged
Port2/1
T
a gged
Device E
Tag Type 8100
Device F
Tag Type 8100
Port s 1/1 - 1/5
Unt a gged
Port s 1/1 - 1/5
Unt a gged
192.168.1.129/24
Device C
Tag Type 9100
Device D
Tag Type 9100