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Configuration Guide - IP Unicast Routing

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of IP Unicast Routing, including IP Routing, Static Route, RIP, RIPng, OSPF, OSPFv3, IPv4 IS-IS, IPv6 IS-IS, BGP, Routing Policy, and PBR.
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Configuring BGP GTSM

Configuring BGP GTSM

Context

To protect a device against the attacks of forged BGP packets, you can configure GTSM to check whether the TTL value in the IP packet header is within the specified range. If the TTL value of a packet is within the specified range, the packet is allowed to pass through. Otherwise, the packet is discarded to protect the device.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run bgp { as-number-plain | as-number-dot }

    The BGP view is displayed.

    NOTE:

    The configurations of GTSM and peer ebgp-max-hop affect the TTL values of BGP packets, which may cause a conflict between TTL values. Therefore, you can configure only either of the two functions for a peer or peer group.

  3. Run peer { group-name | ipv4-address | ipv6-address } valid-ttl-hops [ hops ]

    BGP GTSM is configured.

    By default, GTSM is not configured on any BGP peer or peer group.

  4. Run commit

    The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100074760

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