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Configuration Guide - Reliability

S1720, S2700, S5700, and S6720 V200R010C00

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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Licensing Requirements and Limitations for BFD

Licensing Requirements and Limitations for BFD

Involved Network Elements

Other network elements are required to support BFD functions.

Licensing Requirements

BFD is a basic feature of a switch and is not under license control.

Version Requirements

Table 3-6  Products and versions supporting BFD
Product Product Model Version

S1700

S1720GFR

Not supported

S1720GW and S1720GWR

Not supported

S1720GW-E and S1720GWR-E

Not supported

S1720X and S1720X-E

Not supported

Other S1700 models

Models that cannot be configured using commands. For details about features and versions, see S1700 Documentation Bookshelf.

S2700

S2700SI

Not supported

S2700EI

Not supported

S2710SI

Not supported

S2720EI

Not supported

S2750EI

Not supported

S3700

S3700SI

Not supported

S3700EI

V100R005C01, V100R006(C00&C01&C03&C05)

S3700HI

V100R006C01, V200R001C00

S5700

S5700LI, S5700S-LI, S5720LI, and S5720S-LI

Not supported

S5710-C-LI

Not supported

S5710-X-LI

Not supported

S5700SI

Not supported

S5700EI

V100R005C01, V100R006(C00&C01), V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00&C01&C02&C03)

S5710EI

V200R001C00, V200R002C00, V200R003C00, V200R005(C00&C02)

S5720EI

V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10

S5700HI

V100R006C01, V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00SPC500&C01&C02)

S5710HI

V200R003C00, V200R005(C00&C02&C03)

S5720HI

V200R006C00, V200R007(C00&C10), V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10

S5720SI and S5720S-SI

V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10

S5730SI

V200R011C10

S5730S-EI

V200R011C10

S6700

S6720LI and S6720S-LI

Not supported

S6720SI and S6720S-SI

V200R011C00, V200R011C10

S6700EI

V100R006C00, V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00&C01&C02)

S6720EI

V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10

S6720S-EI

V200R009C00, V200R010C00, V200R011C00, V200R011C10

NOTE:
To know details about software mappings, see Hardware Query Tool.

Feature Limitations

If a loop occurs on the path detected by BFD, the change of the network topology where the loop exists may cause the BFD session to flap at one time.

When the BFD session is bound to the Eth-Trunk and the detection time is less than 300 ms, you are not advised to add or delete Eth-Trunk member interfaces. Otherwise, the BFD session may flap.

To implement 50-ms switching, the device must support the 3.3-ms interval for sending and receiving BFD packets. Only the S5720HI supports this function, and you need to run the set service-mode enhanced command in the system view to configure the switch to work in enhanced mode.

BFD sessions cannot be bound to a QinQ sub-interface.

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Updated: 2019-04-18

Document ID: EDOC1000141941

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