Configuring The Ttl Function Globally; Establishing The Configuration Task; Configuring The Ttl Globally - Huawei AR2200-S Series Configuration Manual

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability

3.11 Configuring the TTL Function Globally

Configuring the TTL globally helps you connect the current device and a device running an early
version.

3.11.1 Establishing the Configuration Task

Before configuring the TTL globally, familiarize yourself with the applicable environment,
complete the pre-configuration tasks, and obtain the required data. This helps you complete the
configuration task quickly and accurately.
Applicable Environment
If devices running different versions interwork with each other, the TTL values and detection
modes on both ends of a BFD session are different, resulting in BFD packet loss. The TTL is
set globally to enable Huawei devices to interwork with Huawei devices running different
AR2200-S versions and non-Huawei devices.
Pre-configuration Tasks
Before configuring the TTL globally, complete the following tasks:
l
l
Data Preparation
To configure the TTL globally, you need the following data.
No.
1

3.11.2 Configuring the TTL Globally

The TTLs help you distinguish between a single-hop BFD session and a multi-hop BFD session
when a device interworks with a device running an early version.
Context
Do as follows on each device:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Issue 01 (2012-01-06)
Connecting interfaces correctly
Configuring the IP address of each Layer 3 interface correctly
Data
Name and number of each interface
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3 BFD Configuration
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