The switches used worldwide are basically required to optimize routers’ performance. Users apt to use Cisco switches among which “Catalyst” series are most popular and abruptly demanding produced. The Cisco Catalyst series Switches are mostly wire-speed, low-latency, Layer 2-4, 1-rack-unit (1-RU), fixed-configuration switches. The catalyst series switches provide exceptional performance, bandwidth, and reliability for low-density. The abundant use of switches provides dependability, reliability and constancy by working with servers and workstations because of remarkable features like :
Layer 2 & 3 switching
Remote Management Protocols
Multiple spanning tree
Trivial File Transfer
Auto IP Routing
MAC Address Filter
The worst disadvantage lies in the security which particularly belongs to console port to which modems or other router attached to. The console does not support RS232 DCD (Data Carrier detect). Therefore when the executional session comes to a conclusion, one has to manually detach the session.
Another problem related to catering the situation when a modem connection is lost. In this case, switches are unable to reset therefore producing a security hole because of illegal entry of modem call without the authorization.
But in the normal cases, one can take great advantages of blasting and innovative features of these catalyst series switches and other Cisco’s switches.
If you're not a fan of the Cisco switches for price alone, then the catalyst is definitely going to meet your needs. It seems a little expensive given the compromises on offerings and features. The best thing for which you can love Cisco’s is that its VLAN is automatically configured but its counterpart Juniper products need to be configured manually. Another difference Is the presence of VTP (VLan Truncking Protocol) in Cisco’s switches that is absent in Juniper. Cisco’s switches support both 802.1Q and ISL (Inter Switched Link) protocols while Juniper only supports 802.1Q.