Brocade BigIron RX Series Configuration Guide - Manual (Page 386)

308 BigIron RX Series Configuration Guide
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Configuring 802.1q-in-q tagging
11
BigIron RX-F(config)# vlan 101
BigIron RX-F(config-vlan-101)# tagged ethernet 2/1
BigIron RX-F(config-vlan-101)# untagged ethernet 1/1
BigIron RX-F(config-vlan-101)# exit
BigIron RX-F(config)# vlan 102
BigIron RX-F(config-vlan-102)# tagged ethernet 2/1
BigIron RX-F(config-vlan-102)# untagged ethernet 1/2
BigIron RX-F(config-vlan-102)# exit
BigIron RX-F(config)# vlan 103
BigIron RX-F(config-vlan-103)# tagged ethernet 2/1
BigIron RX-F(config-vlan-103)# untagged ethernet 1/3
BigIron RX-F(config-vlan-103)# exit
BigIron RX-F(config)# vlan 104
BigIron RX-F(config-vlan-104)# tagged ethernet 2/1
BigIron RX-F(config-vlan-104)# untagged ethernet 1/4
BigIron RX-F(config-vlan-104)# exit
BigIron RX-F(config)# vlan 105
BigIron RX-F(config-vlan-105)# tagged ethernet 2/1
BigIron RX-F(config-vlan-105)# untagged ethernet 1/5
BigIron RX-F(config-vlan-105)# exit
BigIron RX-F(config)# write memory
Configuring 802.1q-in-q tagging
802.1Q-in-Q tagging enables you to configure 802.1Q tag-types on a group of ports, such as trunk
ports, thereby enabling the creation of two identical 802.1Q tags (802.1Q-in-Q tagging) on a single
device. This feature improves SAV interoperability between Brocade devices and other vendors’
devices that support the 802.1Q tag-types, but are not very flexible with the tag-types they accept.
Figure 25 on page 308 shows an 802.1Q configuration example.
FIGURE 25 802.1Q configuration example
As shown in Figure 25 , the ports to customer interfaces are untagged, whereas the uplink ports to
the provider cloud are tagged, because multiple client VLANs share the uplink to the provider cloud.
In this example, the device treats the customer’s private VLAN ID and 8100 tag type as normal
payload, and adds the 9100 tag type to the packet when the packet is sent to the uplink and
forwarded along the provider cloud.
As long as the switches in the provider’s network support the 9100 tag type, the data gets switched
along the network. However, devices that do not support the 9100 tag type may not properly
handle the packets.
To customer interface Provider
Edge Switch
Uplink to provider cloud
Untagged Tagged
DA SA 8100 Customer
VLAN
DA SA 8100
Customer
VLAN Provider
VLAN
9100