Dell PowerConnect B-RX Configuration Manual page 387

FIGURE 28
Edge Switch 1
As illustrated in
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•
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Figure 28
tagged and the tag-types between devices match. In this example, each device performs the
802.1q tag-type translation as the packet traverses the network.
Figure 29
tag-types between devices match, and the core devices have multiple tag-types. In this example,
the tag-type translation feature integrates packets that have single and double tag-types.
BigIron RX Series Configuration Guide
53-1002253-01
802.1q tag-type translation configuration example 1
Customer
Tagged
8100
Tagged
8100
DA SA Customer
8100
VLAN
Figure 28, the devices process the packet as follows:
Customer Edge Switch 1 sends a packet with an 802.1q tag-type of 8100 to Provider Core
Switch 1.
Since the customer-facing interface on Provider Core Switch 1 has the same 802.1q tag-type
as the incoming packet, it removes the 8100 tag-type and replaces (translates) it with the
9100 tag-type as it sends the packet to the uplink (Provider Core Switch 2).
The same process occurs between Provider Core Switch 2 and Customer Edge Switch 2.
shows a simple application of the 802.1q tag-type translation in which all of the ports are
shows a more complex example application in which some ports are untagged, not all
Configuring 802.1q tag-type translation
Network Core
Provider
Core Switch 2
Core Switch 1
Tagged
9100
Tagged
9100
DA SA 9100 Provider
VLAN
Provider
Customer
Edge Switch 2
Tagged
8100
Tagged
8100
DA SA 8100
Customer
VLAN
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