IOS vs. CatOS: Basic Configuration

CatOS

CatOS is the operating system used on Cisco's Catalyst switches before changing over to IOS. Before purchasing the technology from Crescendo in 1993, CatOS was called XDI. CatOS is a Unix-like operating system for many legacy Cisco switches. CatOS runs on the following switch series: 1200, 4000, 4500, 5000, 5500, 6000 and 6500. Some of the high end switches such as the Catalyst 6500 series still run CatOS.

On this page we will be comparing two switches; a Catalyst 4006 running CatOS and a Catalyst 2960 running IOS.

Commands

Commands entered in CatOS are committed to NVRAM instantaneously. In IOS, the user is required to issue a command to save to NVRAM.

IOS configuration modes used below:

(enable) - Priviledged Exec mode. command: enable

(config-t) - Global Configuration mode. command: config terminal

Configuration modes entered in (config-t):

(config-if) - Interface configuration mode. Switchports, EtherChannel groups, VLAN interfaces. command: interface interface"module/port". Example: interface fastethernet0/20

(config-vlan) - VLAN configuration mode. vlan "number"

(config-line) - Console, Auxillary, VTY. line "line-mode" "number". Example: line con 0

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	IOS Command	CatOS Command
Privileged	Enable	Enable
Interface	(config-t)interface int (which puts you into interface configuration mode)	(enable)set port command mod/port
Set Console Password	(config-line)password password	(enable)set password (you will be prompted to change password)
Turn on ports	(config-if)no shutdown	(enable)set port enable mod/port
Turn off ports	(config-if)shutdown	(enable)set port disable mod/port
Banner-MOTD	(config-t)banner-motd # banner here #	(enable)set banner motd # banner here #
System / Hostname	(config)hostname name	(enable)set system name name
Bandwidth	(config-if)bandwidth number in kb	(enable)set port speed speed in megabits
Setting up a domain name for VTP	(config-t)vtp domain domain-name	(enable)set vtp domain domain-name
Enabling VLANS	(config-t) vlan number (will put switch into sub-config mode, but the vlan will become active)	(enable)set vlan number state active
VLAN names	(config-vlan)name name	(enable)set vlan vlan number name name

Troubleshooting

	IOS Command	CatOS Command
	Ping
	tracert
	show ip route
	show int int
	show run
	copy run start
	erase start

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== WIP ==