Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 130

reference time: system flags: jitter: stability: broadcastdelay: authdelay: OS10# ddc78084.f17ea38b ntp kernel stats 0.000000 s 0.000 ppm 0.000000 s 0.000000 s Tue, Nov 28 2017 6:28:20.943 OS10# show ntp status vrf red associd=0 status=0618 leap_none, sync_ntp, 1 event, no_sys_peer, system peer: 11.0.0.2:123 system peer mode: client leap indicator: 00 stratum: 10 log2 precision: -24 root delay: 0.338 root dispersion: 1136.790 reference ID: 11.0.0.2 reference time: dbc7a951.f7978096 Sat, Nov 5 2016 0:41:53.967 system jitter: 0.000000 clock jitter: 0.003 clock wander: 0.001 broadcast delay: -50.000 symm. auth. delay: 0.000 Supported Releases 10.2.0E or later Dynamic Host Configuration Protocol Dynamic Host Configuration Protocol (DHCP) is an application layer protocol that dynamically assigns IP addresses and other configuration parameters to network end-stations, also known as hosts, based on configuration policies network administrators determine. Figure 2. Client and Server Messaging DHCP server DHCP client Relay agent Network device offering configuration parameters to the client. Network device requesting configuration parameters from the server. Intermediary network device that passes DHCP messages between the client and the server when the server is not on the same subnet as the host. Packet format and options The DHCP server listens on port 67 and transmits to port 68. The DHCP client listens on port 68 and transmits to port 67. Configuration parameters are options in the DHCP packet in type, length, value (TLV) format. To limit the number of parameters that servers must provide, hosts enter the parameters that they require and the server sends only those parameters. DHCP uses the User Datagram Protocol (UDP) as its transport protocol. 130 System management