Network/Services/Switches

Summary

We manage a bunch of cisco switches which make the network backbone within the space

Details

The following switches are active:

• core-sw C2960X-UNIVERSALK9-M
• poe-sw C2960S-UNIVERSALK9-M
• zaal1-sw C2960X-UNIVERSALK9-M
• rack-sw C2960X-UNIVERSALK9-M

Management

On the librenms machine, rancid is installed which creates backups of the switch configurations and mails changes to the BOFH team. Rancid can also be used to automate functionality on the switches

Using rancid

First, become the rancid user, on the librenms machine

su - rancid

Next, run the command you want to execute via the 'clogin' command:

clogin -c 'show version' core-sw

PoE

To control the PoE devices, there is the 'poectl' command on librenms. Every minute, a cronjob calls rancid to fetch power and lldp status and this gets stored under /etc/poe. Next, the poectl is able to work on this data. The following commands are available:

root@librenms:/tmp# poectl status
Port     Watts Device
Gi1/0/1  5.0   Polycom VVX 410
Gi1/0/3  23.8  zaal3-ap
Gi1/0/4  5.0   Polycom VVX 410
Gi1/0/5  5.0   Polycom VVX 410
Gi1/0/6  23.8  zaal1-ap
Gi1/0/7  23.8  bar-ap
Gi1/0/8  15.4  Unknown (no lldp talker)

Phone control

You can enable or disable the phones using the commands below:

poectl disable_phones

poectl enable_phones