Cisco 3845 - Security Bundle Router, Software Manual

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11-10
Cisco ME 3800X and 3600X Switch Software Configuration Guide
OL-23400-01
Chapter 11 Configuring Ethernet Virtual Connections (EVCs)
Configuring EFPs
Use the no forms of the commands to remove the service instance, encapsulation type, or bridge domain
or to disable the rewrite operation.
Configuration Examples
Configuring a Service Instance
Switch (config)# interface gigabitethernet0/1
Switch (config-if)# switchport mode trunk
Switch (config-if)#
switchport trunk allowed vlan none
Switch (config-if)# service instance 22 Ethernet [ name ]
Switch (config-if-srv)# encapsulation dot1q 10
Switch (config-if-srv)#
bridge-domain 10
Encapsulation Using a VLAN Range
Switch (config)# interface gigabitethernet0/1
Switch (config-if)# service instance 22 Ethernet
Switch (config-if-srv)# encapsulation dot1q 22-44
Switch (config-if-srv)# bridge-domain 10
Two Service Instances Joining the Same Bridge Domain
In this example, service instance 1 on interfaces Gigabit Ethernet 0/1 and 0/2 can bridge between each
other.
Switch (config)# interface gigabitethernet0/1
Switch (config-if)#
service instance 1 Ethernet
Switch (config-if-srv)# encapsulation dot1q 10
Switch (config-if-srv)# bridge-domain 10
Switch (config)# interface gigabitethernet0/2
Switch (config-if)# service instance 1 Ethernet
Switch (config-if-srv)#
encapsulation dot1q 10
Switch (config-if-srv)# bridge-domain 10
Step 8
rewrite ingress tag pop {1 | 2} symmetric (Optional) Specify that encapsulation modification to occur on
packets at ingress.
•
pop 1—Pop (remove) the outermost tag.
• pop 2—Pop (remove) the two outermost tags.
• 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.
Note Although the symmetric keyword appears to be optional,
you must enter it for rewrite to function correctly.
Step 9
end Return to privileged EXEC mode.
Step 10
show ethernet service instance
show bridge-domain [n | split-horizon]
Verify your entries.
Step 11
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose