Background
We used to use IBM8275 ethernet switches, however following IBM's decision to withdraw from networking, we moved to Cisco.
Most of our sites have a basic need only for ethernet switches, the 24 port version of 2950 series has proved useful.
It supports VLANS, can me managed and monitored through SNMP and is only 1U high. Other versions are available with 48 ports, GBIC slots for gigabit interfaces etc.
By default, all ports are in VLAN1, so for straightforward use, very little config is required. The unit's ip address is only for management, there is no layer 3 functionality.
Configuration
SiteSwitch1-2950#sh run
Building configuration...
Current configuration : 2589 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname SiteSwitch1-2950
!
enable password trytoguessme
!
ip subnet-zero
!
spanning-tree extend system-id
!
!
interface FastEthernet0/1
no ip address
spanning-tree portfast
!
interface FastEthernet0/2
no ip address
spanning-tree portfast
!
.
.Config removed for brevity.
.
!
interface FastEthernet0/20
no ip address
spanning-tree portfast
switchport access vlan 2
!
interface FastEthernet0/21
no ip address
spanning-tree portfast
switchport access vlan 2
!
interface FastEthernet0/22
no ip address
spanning-tree portfast
switchport access vlan 2
!
interface FastEthernet0/23
no ip address
description *** Link To 2nd ethernet switch ***
!
interface FastEthernet0/24
description *** Link To 1720 Router ***
no ip address
!
interface Vlan1
ip address 192.168.4.2 255.255.255.0
no ip route-cache
!
ip default-gateway 172.25.4.1
ip http server
!
snmp-server engineID local 800000090300000BFC2D74C1
snmp-server community public RO
banner login ^Cc
This is a private system and is only for the use of authorised personnel
^C
!
line con 0
password guessmeaswell
line vty 0 4
password guessmeaswell
login
line vty 5 15
password guessmeaswell
login
!
ntp clock-period 36029231
ntp peer 172.25.0.1
ntp peer 172.25.0.7
ntp server 62.232.4.232
ntp server 62.232.4.233
!
ip domain-name xyz.co.uk
ip name-server 192.168.1.1
end
SiteSwitch1-2950#
Cisco 2950 layer 2 ethernet switch