Cpu And Memory Utilization; Show Commands; Address Resolution Protocol - Avaya 4000 Series Troubleshooting Instructions

Troubleshooting tools

CPU and memory utilization

The CPU utilization provides CPU utilization data for the last 10 seconds, 1 min, 1 hour, 24
hours, and from system bootup. CPU utilization is provided as a percentage and the information
shows how the CPU was loaded for the specific time average.
The memory utilization provides information about what percentage of the dynamic memory
is currently used by the system. Also, the memory utilization shows a low watermark
percentage that represents the lowest percentage of the dynamic memory available since
system bootup.
This feature is supported by both ACLI and Web-based management. For more information
about the feature, see Configuring System Monitoring on Avaya Ethernet Routing Switch 4000
Series, NN47205-502.

Show commands

The show tech command has been enhanced to display more information. The show
commands that are incorporated are as follows:
• show mac-address-table
• show ip route
• show ip arp
• show ip dhcp-relay
• show lacp aggr
• show lacp port
• show ipv address
• show ipv interface

Address Resolution Protocol

Address Resolution Protocol (ARP) is the method for finding a host's hardware address when
only its Network Layer address is known.
Caution:
Every time an IP interface or link goes up, the driver for that interface will typically send a
gratuitous ARP to preload the ARP tables of all other local hosts. A gratuitous ARP will tell
36 Troubleshooting Avaya ERS 4000 Series
Comments? infodev@avaya.com
April 2014