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Is there a command to check the number of available memory?
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Is there a command to check the number of available memory?

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I have some existing ex4200s and management just bought some new ex4200s. They would like to replace the old ones with the new ones. I am not sure if it is necessary. The only difference that I see currently is the software image. I am not a Juniper guy, but are there any commands I can use to compare the old one and the new one, like CPU, memory, features, etc... Thanks
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I have some existing ex4200s and management just bought some new ex4200s. They would like to replace the old ones with the new ones. I am not sure if it is necessary. The only difference that I see currently is the software image. I am not a Juniper guy, but are there any commands I can use to compare the old one and the new one, like CPU, memory, features, etc... Thanks

Juniper ex4200 specification

Hardware includes cell phones and other digital living devices, tablets, computers, servers, peripherals and components, printers and scanners, gaming consoles, networking hardware such as routers, hubs, switches and modems, storage devices and security equipment such as firewalls and other appliances.

Hardware

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switches / Hubs

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.