I was recently given the job of managing the shop floor switches and networks that run through our plant. I need to configure a switch in my office, a Cisco L3 WS-C3750G-48TS with IPBaseK9 and ver. 12.2 firmware (switch A), (192.168.254.252 for management). With that switch I want to be able to telnet into the switches on 3 different networks – 192.168.0.0/16, 188.8.131.52/24, and 10.43.1.0/24.
What is the best way to set these switches up so I can manage the switches on the 3 networks? I was told I could do it with Vlans and maybe access lists on the L3 switch but since the 3 core switches are in production, any changes I make on them would need to be non-invasive plus I cannot re-boot them easily.
The 3 switches that I need to connect to are:
Switch B – WSC3850-24S 192.168.254.253 core switch for 192 Net, has many other switches connected.
Switch C – WSC3750G-12S 184.108.40.206 core switch for 137 Net, has many other switches connected.
Switch D – WS-C3750V2-48TS core switch for 10.43 Net, has many other switches connected.
Note: All four switches are connected by fiber. I would like to use Vlan10 for the 192 net, Vlan20 for the 137 net, Vlan30 for the 10.43 net and Vlan99 for management.
Also, all four networks need to be completely isolated.