ELTEX ESR-21 - Page 589

ESR series service routers.ESR-Series. User manual
589
Step Description Command Keys
6 Mark this NTP server as preferred
(optional).
esr(config-ntp)# prefer
7 Define a list of trusted IP
addresses with which ntp packets
can be exchanged (optional).
esr(config)# ntp access-
addresses <NAME>
<NAME> – IP addresses profile name, set by
the string of up to 31 characters.
8 Specify the key ID from the key
binding profile (optional).
esr(config)# ntp
authentication trusted-
key <ID>
<ID> – key ID from the key binding profile.
9 Specify the key binding profile
name (optional).
esr(config)# ntp
authentication key-chain
<WORD>
<WORD> – key binding profile name.
10 Activate key-based authentication
for NTP (optional).
esr(config)# ntp
authentication enable
11 Enable the mode of receiving
broadcast messages from NTP
servers for the global
configuration and all existing VRFs
(optional).
esr(config)# ntp
broadcast-client enable
12 Set the DSCP code value for the
use in IP headers of NTP server
egress packets (optional).
esr(config)# ntpdscp
<DSCP>
<DSCP> – DSCP code value, takes values in
the range of [0..63]
Default value: 46.
13 Enable query-only mode that limits
interaction via NTP for a certain
profile of IP addresses (optional).
esr(config)# ntp object-
group query-only
<NAME>
<NAME> – IP addresses profile name, set by
the string of up to 31 characters.
14 Enable serve-only mode that limits
interaction via NTP for a certain
profile of IP addresses (optional).
esr(config)# ntp object-
group serve-only
<NAME>
<NAME> – IP addresses profile name, set by
the string of up to 31 characters.
15 Specify source-IP addresses for
NTP packets for all peers
(optional).
esr(config)# ntp source
address <ADDR>
<ADDR> – IP address, defined as
AAA.BBB.CCC.DDD where each part takes
values of [0..255].