SNMP V3 Timeout in a Cisco Router

[ricardo_neves]

Hello,

We have been having some problems with the snmp v3 data collecting from a Huawei Router.

We've configured the host in Zabbix but he doesn't collect anything, and becomes unavailable after some time with the "Timeout while connecting to" error message.
On the logs on the proxy we get:
SNMP agent item "sysContact" on host "RT XXXXXXX" failed: another network error, wait for 15 seconds

If we run the snmpwalk from the proxy it runs the tree but we notice the it runs slower then usual and after a while stops with a Timeout error,

--> time snmpwalk -v3 -l authPriv -u xxxxxxx -a SHA -A xxxxxxx -x AES -X xxxxxxx 172.xx.xx.xx
Timeout: No Response from 172.xx.xx.xx

real 1m19.883s
user 0m0.586s
sys 0m0.372s

If we run the command with the timeout flag set for 20 it runs until the end,

--> time snmpwalk -t 20 -v3 -l authPriv -u xxxxxxx -a SHA -A xxxxxxx -x AES -X xxxxxxx 172.xx.xx.xx

real 2m31.047s
user 0m0.866s
sys 0m0.575s

The timeout parameter in the zabbix proxy configuration is set for 30,

### Option: Timeout
# Specifies how long we wait for agent, SNMP device or external check (in seconds).
#
# Mandatory: no
# Range: 1-30
# Default:
# Timeout=3
Timeout=30

And if we do a test inside the item we are able to collect the data of that item.

Zabbix is the 6.0.36
Proxy OS - Oracle Linux Server 9.5
zabbix_proxy (Zabbix) 6.0.36

Any ideas?

Thank you

Ricardo Neves