Configuring Bgp To Receive Routes - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
<HUAWEI> display bgp routing-table as-path-filter 3
Total Number of Routes: 12
BGP Local router ID is 192.168.1.121
Status codes: * - valid, > - best, d - damped,
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8.6 Configuring BGP to Receive Routes

BGP is used to transmit routing information. BGP can filter received routes to accept only the
expected routes, and can modify route attributes to direct network traffic.
8.6.1 Before You Start
Before configuring BGP to receive routes, familiarize yourself with the usage scenario, complete
the pre-configuration tasks, and obtain the data required for the configuration.
Applicable Environment
BGP is used to transmit routing information between ASs. Route reception directly affects traffic
forwarding.
The BGP device may receive routes to the same destination from different BGP peers. To control
traffic forwarding paths, the device needs to filter the received BGP routes.
The device may be attacked and receive a large number of routes from its BGP peers, consuming
lots of resources of the device. Therefore, the administrator must limit the resources to be
consumed based on networking planning and device capacities, no matter whether too many
BGP routes caused by malicious attacks or incorrect configurations.
Filters can be used to filter routes to be received by BGP. BGP can filter the routes received
from all peers or peer groups or only the routes received from a specific peer or peer group.
Pre-configuration Tasks
Before configuring BGP to receive routes, complete the following task:
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Issue 02 (2014-09-30)
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192.168.3.0
Configuring Basic BGP Functions
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
i - internal, s - suppressed, S - Stale
NextHop MED
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8 BGP Configuration
LocPrf PrefVal Path/Ogn
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