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CLI-based Configuration Guide - Reliability

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides guidance for configuring reliability services, including interface backup, BFD, VRRP, and EFM.
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What Do the TTL Values 255, 254, and 253 Mean in a BFD Session?

What Do the TTL Values 255, 254, and 253 Mean in a BFD Session?

The TTL values 255, 254, and 253 indicate that the lifetime of a BFD packet is 255, 254, and 253 respectively.

From V200R001C01, you can configure a global TTL for a BFD session.

By default, the lifetime of a static single-hop or dynamic single-hop BFD packet is 255, the lifetime of a static multi-hop BFD packet is 254, and the lifetime of a dynamic multi-hop BFD packet is 253.

Updated: 2019-03-06

Document ID: EDOC1100069338

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