ESR series service routers.ESR-Series. User manual
8.1  VLAN Configuration
VLAN (Virtual Local Area Network) is a logical (virtual) local area network that represents a group of devices, 
which communicate on channel level regardless of their physical location. VLAN operation is based on the use 
of additional Ethernet header fields according to 802.1q standard. In fact, VLAN isolates the broadcast domain 
by limiting the switching of only those Ethernet frames which have the same VLAN-ID in the Ethernet header.
8.1.1  Configuration algorithm
Step Description Command Keys
1 Create VLAN. esr(config)# vlan <VID> <VID> – VLAN identifier, set in the 
range of [2..4094].
It is also possible to create multiple 
vlan (comma separated), vlan range 
(hyphen separated) or combined entry 
containing commas and hyphens.
2 Specify vlan name (optional). esr(config-vlan)# name <vlan-
name>
<vlan-name> – up to 255 characters.
3 Disable monitoring of the status 
of interfaces on which processing 
of the given VLAN Ethernet 
frames is allowed (optional).
esr(config-vlan)# force-up
4 Disable the processing of 
incoming untagged Ethernet 
frames based on the default 
VLAN's switching table (VLAN-ID 
– 1) (optional).
esr(config-if-gi)# switchport 
forbidden default-vlan
5 Set L2 interface operation mode. esr(config-if-gi)# mode 
switchport
6 Set the combined mode of the 
physical interface.
esr(config-if-gi)# mode hybrid Only for 
ESR-1000/1200/1500/1511/1700.
7 Set L2 interface operation mode. esr(config-if-gi)# switchport 
access
Only for ESR-10/12V(F)/14VF/
15/20/21/30/100/200/3100/3200.
This mode is the default mode and is 
not displayed in the configuration.
esr(config-if-gi)# switchport 
trunk
Only for ESR-10/12V(F)/14VF/
20/21/100/200/3100.