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Step Description Command Keys
9 Assign the broadcast domain for
encapsulation in the tunnel’s GRE
packets (only in ethernet mode).
esr(config-gre)# bridge-group
<BRIDGE-ID>
<BRIDGE-ID> – bridge
identification number, takes
values in the range of:
for ESR-10/12V(F)/14VF
– [1..50];
for ESR-20/21/100/200 –
[1..250];
for ESR-1000/1200/1500
/1511/1700/3100 –
[1..500]
10 Include the GRE tunnel in a security
zone and configure interaction rules
between zones or disable firewall (see
section Firewall configuration).
esr(config-gre)# security-
zone<NAME>
<NAME> – security zone name,
set by the string of up to 12
characters.
esr(config-gre)# ip firewall disable
11 Specify MTU size
(MaximumTransmissionUnit) for the
tunnel (optionally).
MTU above 1500 will be active only
when using the "system jumbo-
frames” command.
esr(config-gre)# mtu <MTU> <MTU> – MTU value, takes
values in the range of:
for ESR-10/12V(F)/14VF
– [1280..9600];
for ESR-20/21 –
[1280..9500];
for
ESR-100/200/1000/1200
/1500/1511/1700/3100
– [1280..10000].
Default value: 1500.
12 Specify the TTL lifetime for tunnel
packets (optionally).
esr(config-gre)# ttl <TTL> <TTL> – TTL value, takes
values in the range of [1..255].
Default value: Inherited from
encapsulated packet.
13 Specify DSCP for the use in IP header
of encapsulated packet (optionally).
esr(config-gre)# dscp <DSCP> <DSCP> – DSCP code value,
takes values in the range of
[0..63].
Default value: inherited from
encapsulated packet.
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