Arp Cache out time- Can be changed need to confirm

L4 Transporter

Arp Cache out time- Can be changed need to confirm

 

I was able to change the default arp cache timeout from 1800 to 3600.

 

as shown below

 

 

set system setting arp-cache-timeout
<value> <60-65535> ARP cache timeout interval, in seconds

> set system setting arp-cache-timeout 3600

ARP cache timeout:3600

mparmar2@BMS> show arp all

maximum of entries supported : 1500
default timeout: 3600 seconds
total ARP entries in table : 12
total ARP entries shown : 12
status: s - static, c - complete, e - expiring, i - incomplete

interface ip address hw address port status ttl
--------------------------------------------------------------------------------
ethernet1/1 184.71.194.133 00:01:5c:97:f8:46 ethernet1/1 c 1038
ethernet1/2 10.1.10.2 bc:16:65:ed:e7:48 ethernet1/2 c 103
ethernet1/2 10.1.10.3 bc:16:65:ed:e7:48 ethernet1/2 c 266
ethernet1/2 10.1.10.6 bc:16:65:ed:e7:48 ethernet1/2 c 1093
ethernet1/2 10.1.10.7 bc:16:65:ed:e7:48 ethernet1/2 c 878
ethernet1/2 10.1.10.8 bc:16:65:ed:e7:48 ethernet1/2 c 36
ethernet1/2 10.1.10.9 bc:16:65:ed:e7:48 ethernet1/2 c 1737
ethernet1/2 10.1.10.10 bc:16:65:ed:e7:48 ethernet1/2 c 1680
ethernet1/2 10.1.10.11 bc:16:65:ed:e7:48 ethernet1/2 c 1051
ethernet1/2 10.1.10.40 bc:16:65:ed:e7:48 ethernet1/2 c 100
ethernet1/2 10.1.20.2 bc:16:65:ed:e7:48 ethernet1/2 c 43
ethernet1/7 10.23.104.20 00:11:bb:5e:a0:c1 ethernet1/7 c 42

 

 

But below knowledgebase says you can not ??

 

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000CldWCAS

Tags (2)
L7 Applicator

Re: Arp Cache out time- Can be changed need to confirm

@MP18,

This was a new feature added in PAN-OS 8.1 and is now fully supported, so feel free to modify it to whatever you need within your environment. 

 

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