Purpose
Command or Action
Configures dot1ad NNI, C-port or S-port on the interface.
ethernet dot1ad
{
nni
|
uni
{
c-port
|
s-port
}}
Example:
Router(config-if)#
ethernet dot1ad nni
Step 4
or
Router(config-if)#
ethernet dot1ad uni
c-port
or
Router(config-if)#
ethernet dot1ad uni
s-port
Configure an EFP (service instance) and enter service instance
configuration) mode.
service instance number ethernet
[
name
]
Example:
Router(config-if)#
service instance 1
Ethernet
Step 5
•
The number is the EFP identifier, an integer from 1 to 4000.
•
(Optional)
ethernet
name is the name of a previously
configured EVC. You do not need to use an EVC name in a
service instance.
Configure encapsulation type for the service instance.
encapsulation
{
default
|
dot1q
|
priority-tagged
|
untagged
}
Step 6
•
default
—
Configure to match all unmatched packets.
Example:
Router(config-if-srv)#
encapsulation dot1q
10
•
dot1q
—
Configure 802.1Q encapsulation. See
for details about options for this keyword.
•
priority-tagged
—
Specify priority-tagged frames, VLAN-ID
0 and CoS value of 0 to 7.
•
untagged
—
Map to untagged VLANs. Only one EFP per port
can have untagged encapsulation.
(Optional) Specify that encapsulation modification to occur on packets
at ingress.
rewrite ingress tag push dot1ad vlan-id
[
dot1q
vlan-id
]
symmetric
}
Step 7
Example:
Router(config-if-srv)#
rewrite ingress tag
push dot1ad 30 symmetric
•
symmetric
—
Configure the packet to undergo the reverse of
the ingress action at egress. If a tag is popped at ingress, it is
pushed (added) at egress. This keyword is required for
rewrite
to function properly.
•
push
—
Adds a tag to an ingress packet.
•
dot1ad vlan-id
—
Specifies the 802.1 do1ad tag. Valid Vlan ID
range is from 1 to 4094.
•
dot1q vlan-id
—
Specifies the 802.1 do1q tag. Valid Vlan ID
range is from 1 to 4094.
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
415
Configuring IEEE 802.1ad
Configuring the IEEE 802.1ad on Cross-Connect on EFP
