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[SRX] Why is the output so slow when using the command ‘show arp’?



Article ID: KB31076 KB Last Updated: 29 Aug 2016Version: 1.0

This article explains why the output is slow when using the command ‘show arp'. It may take up to 30 more seconds to display an address.


When entering the command ‘show arp', it takes a long time for the output to display.


This occurs because the command does a DNS lookup by default to resolve a name for the host IP.

root@SRX> show arp
MAC Address Address Name Interface Flags
3c:94:d5:ba:88:cc ge-0/0/3.0 none


To avoid the DNS lookup, use the command ‘show arp no-resolve’ or  add a DNS server which can be accessed by the SRX.

root@SRX> show arp no-resolve
MAC Address Address Interface Flags
3c:94:d5:ba:88:cc ge-0/0/3.0 none

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