In the example shown in NTP Configuration Example, SW#1 synchronizes its clock from the 0-3.us.pool.ntp.org timer server, and provides the synchronized clock information to SW#2 as a unicast message, and to SW#3 as a broadcast message.
SW#2 configures SW#1 as a time server using a normal unicast message. It also has a local clock (127.127.1.1) with a stratum level of 10. SW#3 is configured as broadcast client without specific server information. For security purposes, SW#2 and SW#3 use RSA Data Security, Inc. MD5 (Message-Digest algorithm 5) Message-Digest Algorithm authentication with a key index of 100.
create vlan internet create vlan toSW2 create vlan toSW3 config vlan internet add port 1 config vlan toSW2 add port 2 config vlan toSW3 add port 3 config vlan internet ipaddress 10.45.203.74/24 config vlan toSW2 ipaddress 100.1.1.1/24 config vlan toSW3 ipaddress 102.1.1.1/24 config iproute add default 10.45.203.1 vr vr-default enable ntp create ntp key 100 md5 EXTREME config ntp key 100 trusted enable ntp vlan internet enable ntp vlan toSW2 enable ntp vlan toSW3 enable ntp vlan toSW3 broadcast-server key 100 config ntp server add 0.us.pool.ntp.org config ntp server add 1.us.pool.ntp.org config ntp server add 2.us.pool.ntp.org config ntp server add 3.us.pool.ntp.org config ntp local-clock stratum 10
create vlan toSW1 config vlan toSW1 add port 1 config vlan toSW1 ipaddress 100.1.1.2/24 enable ntp enable ntp vlan toSW1 config ntp server add 100.1.1.1
create vlan toSW1 config vlan toSW1 add port 1 config vlan toSW1 ipaddress 102.1.1.2/24 enable ntp enable ntp broadcast-client create ntp key 100 md5 EXTREME config ntp key 100 trusted enable ntp vlan toSW1
create vlan v2 -- in vr VR-Mgmt create vlan v5 -- in vr VR-Default create vlan v3 -- in vr test (user-VR) create vlan v6 -- in vr test (user-VR) config vlan v2 ipaddress 10.127.7.33/24 config vlan v5 ipaddress 5.1.1.5/24 config vlan v3 ipaddress 10.127.7.60/24 config vlan v5 add port <port towards SW#2> config vlan v6 add port <port towards SW#3> config vlan v2 add port <port connected to reach reference clock> config vlan v3 add port <port connected to reach reference clock> enable ntp vr test enable ntp vr VR-Default enable ntp vr VR-Mgmt enable ntp vlan v3 enable ntp vlan v6 enable ntp vlan v2 enable ntp vlan v5 enable ntp vlan Mgmt configure ntp server add 128.138.140.44 initial-burst vr VR-Default configure ntp server add 128.138.141.172 initial-burst vr VR-Default configure ntp server add 129.6.15.28 initial-burst vr test configure ntp server add 129.6.15.29 initial-burst vr test configure ntp server add 129.6.15.30 initial-burst vr test configure ntp server add 2.us.pool.ntp.org initial-burst vr test configure ntp server add 204.152.184.72 initial-burst vr VR-Mgmt configure ntp server add 24.56.178.140 initial-burst vr VR-Default configure ntp server add 64.113.32.5 initial-burst vr VR-Default configure ntp server add 66.199.22.67 initial-burst vr VR-Mgmt configure ntp server add 98.175.203.200 initial-burst vr VR-Mgmt
create vlan v5 -- in vr VR-Default config vlan v5 add port <port towards SW#1> config vlan v5 ipaddress 5.1.1.6/24 enable ntp vr VR-Default enable ntp vlan v5 configure ntp server add 5.1.1.5 initial-burst vr VR-Default
create vlan v6 -- in vr test (user-VR) config vlan v6 ipaddress 6.1.1.7/24 config vlan v6 add port <port towards SW#1> enable ntp vr test enable ntp vlan v6 configure ntp server add 6.1.1.6 initial-burst vr test
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