Uptrends designed its HTTP(S) monitors to check the availability and speed of your website, but when you need to check other non-web, networked devices from outside your firewall, you need a Network Check. Uptrends will notify your team when it encounters an error with your provided URL or IP address, and depending on the error, you will receive a traceroute to assist you in fixing the problem. With Network Checks, you have two options: ping or connect.

Ping

When you select the Ping Network Check, Uptrends' checkpoints use ICMP (Internet Control Message Protocol) to send an echo request. Uptrends gathers and reports response times and issues alerts for any errors found in the reply.

Note: You must have ICMP enabled on the device to avoid needless alerts; also in the event of heavy network traffic, sometimes devices ignore ICMP requests.

Connect

When you select a Connect Network Check, Uptrends will attempt to connect to the port number you designate. You can provide any port number; for example, to make a SSH (Secure Shell) connection to a Linux box you would indicate port 22.

Features

Both the Ping and Connect provide you with many options for your monitoring.

Frequency

Although the default setting for frequency is five minutes, you can adjust the frequency from one minute up to once an hour.

IP version

IPv4 has long been the standard, but the new version IPv6 is quickly gaining acceptance. Most of the Uptrends checkpoints support IPv6, and we continue to add more.

Note: We recommended that you set up checks to monitor both IPv4 and IPv6. The two versions handle routing differently, so tests could fail on one version while the other succeeds.

Performance

Slow connects or pings may indicate other network or hardware issues. Using the Alerting conditions tab, you can set performance limits to notify you when your network experiences performance problems.

DNS lookup mode

Under the Advanced tab, you have the option to specify the DNS lookup mode you prefer: local or primary. We strongly recommend that you keep the default option, Local.