Support Support Downloads Knowledge Base Case Manager My Juniper Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

[MX] How to verify the IPv6 NDP configuration on the Junos platform

0

0

Article ID: KB31453 KB Last Updated: 28 Feb 2017Version: 1.0
Summary:

This article explains how to verify the IPv6 Neighbor Discovery Protocol (NDP, ND) configuration on Junos platform.

Symptoms:

IPv6 NDP related parameters can be modified, but there is no CLI command to confirm the settings are in effect.

Example IPv6 NDP configuation:

user@router# show system 
nd-maxmcast-solicit 10;
nd-maxucast-retry 10;
Solution:

Default value:

user@router# run start shell 
%  sysctl -a | grep icmp6.nd6
net.inet6.icmp6.nd6_prune: 1
net.inet6.icmp6.nd6_retrans: 1000
net.inet6.icmp6.nd6_delay: 5
net.inet6.icmp6.nd6_umaxtries: 3 <--- default value
net.inet6.icmp6.nd6_mmaxtries: 3 <--- default value
net.inet6.icmp6.nd6_useloopback: 1
net.inet6.icmp6.nd6_maxnudhint: 0
net.inet6.icmp6.nd6_debug: 0
net.inet6.icmp6.nd6_public_cache_limit: 59840
net.inet6.icmp6.nd6_mgt_cache_limit: 14960
net.inet6.icmp6.nd6_iri_cache_limit: 200
net.inet6.icmp6.nd6_system_cache_limit: 75000

After commit configuration:

user@router# show system 
nd-maxmcast-solicit 10;
nd-maxucast-retry 10;

user@router# commit 

user@router# run start shell 
%  sysctl -a | grep icmp6.nd6
net.inet6.icmp6.nd6_prune: 1
net.inet6.icmp6.nd6_retrans: 1000
net.inet6.icmp6.nd6_delay: 5
net.inet6.icmp6.nd6_umaxtries: 10 <--- modified value  
net.inet6.icmp6.nd6_mmaxtries: 10 <--- modified value
net.inet6.icmp6.nd6_useloopback: 1
net.inet6.icmp6.nd6_maxnudhint: 0
net.inet6.icmp6.nd6_debug: 0
net.inet6.icmp6.nd6_public_cache_limit: 59840
net.inet6.icmp6.nd6_mgt_cache_limit: 14960
net.inet6.icmp6.nd6_iri_cache_limit: 200
net.inet6.icmp6.nd6_system_cache_limit: 75000

Note: The "nd-maxucast-retry" statement is introduced in Junos OS release 15.1R1.

Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Getting Up and Running with Junos

Getting Up and Running with Junos Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search