ESR series service routers.ESR-Series. User manual
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Step Description Command Keys
6 For each LT tunnel, specify IP address 
for packets routing. For interacting LT 
tunnels, IP addresses should locate in 
one IP subnet.
esr(config-lt)# ip address <ADDR/
LEN>
<ADDR/LEN> – IP address and 
prefix of a subnet, defined as 
AAA.BBB.CCC.DDD/EE where 
each part AAA-DDD takes 
values of [0..255] and EE takes 
values of [1..32].
7 Enable the tunnels. esr(config-lt)# enable
8 For each VRF configure required routing 
protocols via LT tunnel.
9 Specify the time interval during which 
the statistics on the tunnel load is 
averaged (optional).
esr(config-lt)# load-average 
<TIME>
<TIME> – interval in seconds, 
takes values of [5..150].
Default value: 5.
10 Specify the size of MTU packets that 
can be passed by the bridge (optional; 
possible if only VLAN is included in the 
bridge).
MTU above 1500 will be active only 
when using the 'system jumbo-frames' 
command.
esr(config-lt)# mtu <MTU> <MTU> – MTU value, takes 
values in the range of:
for ESR-10/12V(F)/
14VF/15 – [1280..9600];
for ESR-20/21/30 – 
[1280..9500];
for 
ESR-100/200/1000/120
0/1500/1511/1700/310
0/3200 – [1280..10000].
Default value: 1500.