ESR service routers. ESR-Series. Functionality description. Version 1.12.0
22
Solution:
Create sub-interface for VLAN: 828
esr(config)#
interface
gigabitethernet
1
/
0
/
1.828
Configure IP address from necessary subnet.
esr(config)#
interface
gigabitethernet
1
/
0
/
1.828
esr(config-subif)# ip address
192.168
.
3.1
/
24
esr(config-subif)# exit
2.6 Q-in-Q termination configuration
Q-in-Q is a technology of packet transmission with two 802.1q tags. The technology is used for extending
quantity of VLANs in data networks. 802.1q header, which is closer to payload, is an Inner Tag also known as
C-VLAN (Customer VLAN). 802.1q header, which is comes before C-VLAN, is an Outer Tag also known as S-
VLAN (Service VLAN). Using of double tags in Ethernet frames is describing by 802.1ad protocol.
2.6.1 Configuration algorithm
Step
Description
Command
Keys
1
Create a sub-interface of a
physical interface (possible if the
physical interface is in routeport or
hybrid mode).
esr(config)# interface
gigabitethernet
<PORT>.<S-VLAN>
or
interface
tengigabitethernet
<PORT>.<S-VLAN>
or
interface port-channel
<CH>.<S-VLAN>
<PORT> – physical interface number.
<CH> – aggregated interface number.
<S-VLAN> – identifier of created S-
VLAN.
If a physical interface is included in
bridge-group, it will be impossible to
create sub-interface.
In addition to assigning an IP address, you must either disable the firewall or configure the
corresponding security zone on the sub interface.