ESR series service routers.ESR-Series. User manual
8.4.1  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.
2 Specify sub-interface description 
(optional).
esr(config-subif)# description 
<DESCRIPTION>
<DESCRIPTION> – interface 
description, set by the string of 
up to 255 characters.
3 Specify VRF instance, in which the given 
sub-interface will operate (optional).
esr(config-subif)# ip vrf forwarding 
<VRF>
<VRF> – VRF name, set by the 
string of up to 31 characters.
4 Specify the IPv4/IPv6 address and 
subnet mask for the interface to be 
configured or enable IP address obtain 
dynamically.
esr(config-subif)# ip address 
<ADDR/LEN>
<ADDR/LEN> – IP address and 
subnet mask length, defined as 
AAA.BBB.CCC.DDD/EE where 
each part AAA-DDD takes 
values of [0..255] and EE takes 
values of [1..32].
For advanced IPv4 addressing 
features see section IP 
addressing configuration.
esr(config-subif)# ipv6 address 
<IPV6-ADDR/LEN>
<IPV6-ADDR/LEN> – IP address 
and prefix of a subnet, defined 
as X:X:X:X::X/EE where each X 
part takes values in 
hexadecimal format [0..FFFF] 
and EE takes values of [1..128].
For advanced IPv6 addressing 
features see section IPv6 
addressing configuration.
Several IPv4/IPv6 addresses 
can be specified separated by 
commas. Up to 8 IPv4/IPv6 
addresses can be assigned to 
the interface.