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Configuration Guide - Device Management

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of IP multicast, including IP multicast basics, IGMP, MLD, PIM (IPv4), PIM (IPv6), MSDP, multicast VPN, multicast route management (IPv4), multicast route management (IPv6), IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN, multicast network management.

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Application Scenarios for NTP

Application Scenarios for NTP

Typical Application

On the network shown in Figure 4-8, SwitchA accessing a standard clock is used as the NTP master clock server to synchronize clocks on the entire network. SwitchA is configured as the unicast server, and SwitchB, SwitchC and SwitchD are configured as unicast clients. SwitchE acts as a symmetric peer of the upstream SwitchB and downstream SwitchF.

Figure 4-8 Typical networking

Application in VPN Networking

NTP supports time synchronization on an MPLS VPN network. Specifically, network devices (CE and PE) at different geographical locations can achieve time synchronization through NTP as long as they belong to the same VPN.

Figure 4-9 shows the application of the NTP service on a VPN network. Both CE A and CE B belong to VPN 2. CE B is used as an NTP unicast server, CE A is used as an NTP unicast client, and NTP time synchronization can be implemented between the two devices.

Figure 4-9 NTP application in VPN networking

Updated: 2020-01-07

Document ID: EDOC1100075362

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