General
Upgrade IOS
#show version
#show file system //show the storages
#dir flash //check flash directory list
#show boot //show boot file
copy tftp flash: //will prompt some questions about tftp server IP or name
#show ip int brief vlan1 //show interface vlan1
switch(config)#boot system flash:c2960-lanlitek9-mz.150-2,SE5.bin //boot from a specific IOS file
#reload
Backup startup configuration:
#copy startup-config flash:
#Destination filename [startup-config]?
Restore
copy flash:backupconfig running-config
Cisco 2960-X and XR
Getting Started Guide for the Catalyst 2960-X and 2960-XR Switches
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960xr/hardware/quick/guide/b_gsg_2960xr.html
Quickly Enable SSH on a Cisco Router or Switch
https://www.youtube.com/watch?v=3v3Iw87vEQ8
Catalyst 2960-X Switch Security Configuration Guide, Cisco IOS Release 15.0(2)EX
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/security/configuration_guide/b_sec_152ex_2960-x_cg/b_sec_152ex_2960-x_cg_chapter_01000.html
Configure VLAN – Single and Multiple
Create a VLAN
#configure terminal
(config)#vlan 10
(config-vlan)#name management
Add a port to vlan
Switch(config)# interface fastEthernet 0/2 (or a range: interface range fa0/2 - 10)
Switch(config-if)#switchport mode access
Switch(config-if)#switchport access vlan 10
Turn on vlan
switch(config)#interface vlan 10
Verify
Switch#show vlan id 10 (or show vlan name management)
Configure DHCP
Router#conf terminal
Router(config)#service dhcp
Router(config)#ip dhcp excluded-address 192.168.3.1 192.168.3.10
Router(config)#ip dhcp pool vlan10
Router(dhcp-config)#network 192.168.3.0 255.255.255.0
Router(dhcp-config)#default-router 192.168.3.1
Router(dhcp-config)#dns-server
Router(dhcp-config)#dns-server 8.8.8.8
Set up DHCP for multiple VLANs
Notes
# Interface fa0/1
# switchport trunk
# switchport trunk vlan 50 ("swtichport natvie vlan 50" does not work)
1. Set up Router
router(config)#int fa 0/0 (turn the port on)
router(config)#int fa 0/0.10
router(config-if)#encapsulation dot1q 10 (vlan 10)
router(config-if)#ip address 192.168.10.1 255.255.255.0
router(config)#int fa 0/0.15
router(config-if)#encapsulation dot1q 15 (vlan 15)
router(config-if)#ip address 192.168.15.1 255.255.255.0
router(config)#int fa 0/0.80
router(config-if)#encapsulation dot1q 80 native (vlan 80)
router(config-if)#ip address 192.168.80.1 255.255.255.0
router(config)#int fa 0/0.99 (management vlan)
router(config-if)#encapsulation dot1q 99 native (vlan 99)
router(config-if)#ip address 192.168.99.1 255.255.255.0
2. Set up vlan in the switch
switch#(config)#int fa 0/1
switch#(config-if)switchport turnk native vlan 80 (mutliple vlans to go through)
switch#(config)#int vlan 99 (management vlan)
switch#(config-if)#ip address 192.168.99.2 255.255.255.0
switch#(config)#ip default-gateway 192.168.99.1 255.255.255.0
switch#(config)#int range fa 0/10 - fa 0/14
switch#(config-if)#spanning-tree portfast (so they will receive ip addresses faster)
switch#(config-if)#switchport mode access
switch#(config-if)#switchport access vlan 10
switch#(config)#int range fa 0/15 - fa 0/19
switch#(config-if)#spanning-tree portfast (so they will receive ip addresses faster)
switch#(config-if)#switchport mode access
switch#(config-if)#switchport access vlan 15
3. Set up DHCP in the router
router(config)#ip dhcp pool first-floor
router(dhcp-config)#network 192.168.10.0 255.255.255.0
router(dhcp-config)#default-router 192.168.10.1
router(config)#ip dhcp pool second-floor
router(dhcp-config)#network 192.168.15.0 255.255.255.0
router(dhcp-config)#default-router 192.168.15.1