What Do I Do When Automatic Discovery On SUSE Linux Fails Because There Are Too Many NEs to Discover?

1.Log in to the Linux operating system as the root user.
2.Modify configuration files in IPv4 and IPv6 scenarios as follows. •IPv4: Modify the ARP table configuration in the IPv4 scenario.a.On the CLI, run the following commands:echo 4096 > /proc/sys/net/ipv4/neigh/default/gc_thresh1
echo 8192 > /proc/sys/net/ipv4/neigh/default/gc_thresh2
echo 20480 > /proc/sys/net/ipv4/neigh/default/gc_thresh3

b.Edit the /etc/sysctl.conf file. Specifically, modify the configuration as follows or add the following configuration items to the end of the file:net.ipv4.neigh.default.gc_thresh1 = 4096
net.ipv4.neigh.default.gc_thresh2 = 8192
net.ipv4.neigh.default.gc_thresh3 = 20480

•IPv6: Modify the ARP table configuration in the IPv6 scenario.a.On the CLI, run the following commands:echo 4096 > /proc/sys/net/ipv6/neigh/default/gc_thresh1
echo 8192 > /proc/sys/net/ipv6/neigh/default/gc_thresh2
echo 20480 > /proc/sys/net/ipv6/neigh/default/gc_thresh3

b.Edit the /etc/sysctl.conf file. Specifically, modify the configuration as follows or add the following configuration items to the end of the file:net.ipv6.neigh.default.gc_thresh1 = 4096
net.ipv6.neigh.default.gc_thresh2 = 8192
net.ipv6.neigh.default.gc_thresh3 = 20480

NOTE:
The values 4096, 8192, and 20480 in the examples are recommended values. The corresponding numbers of ARP routes occupy system memory. Set these values based on actual deployment scenarios.

This post was last edited by Skay at 2018-10-18 06:31.

Question:
On the SUSE Linux (64 bit) OS, the default number of ARP routes is set to 1024. As a result, the automatic discovery operation fails for batch discovery of NEs in the same network segment if the network segment has more than 1024 NEs. In the eSight log (path: eSight installation directory/AppBase/var/iemp/log/oms/med/med.log), the error message "No buffer space available" is displayed. In the operating system log (path: /var/log/message), the error message "Neighbour table overflow" is displayed. The ARP table parameters for the Linux operating system must be set to solve this issue.

 

below is standard answer link on document :

http://support.huawei.com/hedex/pages/EDOC1000184142AEH01028/04/EDOC1000184142AEH01028/04/resources/maintenance_manual/SemiXML(0016119902)/en-us_topic_0100731773.html?ft=0&fe=10&hib=11.5.7.20.13&id=EN-US_TOPIC_0100731773&text=What%20Do%20I%20Do%20When%20Automatic%20Discovery%20On%20SUSE%20Linux%20Fails%20Because%20There%20Are%20Too%20Many%20NEs%20to%20Discover&docid=EDOC1000184142