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Configuration Guide - Reliability

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configurations of Reliability, including BFD Configuration, VRRP Configuration, DLDP Configuration, Smart Link and Monitor Link Configuration, EFM Configuration, and CFM Configuration.
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Cascading of Smart Link and Monitor Link

Cascading of Smart Link and Monitor Link

Figure 5-14 shows cascading of Smart Link and Monitor Link, in which a Smart Link group can function as the uplink interface of a Monitor Link group. This networking provides enhanced reliability in link backup.

Figure 5-14 Cascading of Smart Link and Monitor Link

In Figure 5-14, the uplink interfaces on SwitchC and SwitchJ are added to Smart Link groups to guarantee reliability. Monitor Link groups are configured on SwitchC and SwitchJ, with the Smart Link groups serving as uplink interfaces. An active/standby switchover will be triggered on SwitchF only if both the two uplink interfaces in a Smart Link group are Down.

Table 5-2 lists the Smart Link and Monitor Link configuration on the switches.
Table 5-2 Configuration of Smart Link and Monitor Link


Smart Link Group

Monitor Link Group


Master Port: Interface C2

Slave Port: Interface C3

Uplink Port: Smart Link Group, Interface C2, Interface C3

Downlink Port: Interface C1


Master Port: Interface J2

Slave Port: Interface J3

Uplink Port: Smart Link Group, Interface J2, Interface J3

Downlink Port: Interface J1


Master Port: Interface F1

Slave Port: Interface F2

No Monitor Link group configured

Updated: 2019-05-08

Document ID: EDOC1100004359

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