VLAN configuration is very different between HP and Cisco switches. HP is VLAN centred and Cisco is based on physical port. While managing Cisco switches, using a script to generate the config may ease the task. This post proposes a simple script to generate the config.
On HP switches, it’s based on VLAN, defining which port(s) it belongs to. However in Cisco switch, it’s based on the physical port – and using a script (e.g., Ruby) to generate the config for Cisco switch make the work much easier.
The Ruby script
#!/usr/bin/env ruby
port_to_vlan = Hash.new
(1..4).each{|t1|
port_to_vlan[t1] = 1
}
(5..8).each{|t1|
port_to_vlan[t1] = 2
}
(47..48).each{|t1|
port_to_vlan[t1] = (1..4)
}
puts "enable"
puts "terminal length 0"
puts "config terminal"
puts "no logging console"
port_to_vlan.each_pair{|key, value|
puts "interface GigabitEthernet1/0/#{key}"
puts "no switchport trunk encapsulation dot1q"
puts "no switchport mode trunk"
puts "no switchport trunk allowed vlan"
puts "no switchport mode access"
puts "no switchport access vlan"
if value.class == Range
puts "switchport trunk encapsulation dot1q"
puts "switchport mode trunk"
puts "switchport trunk allowed vlan #{value.begin}-#{value.end}"
else
puts "switchport mode access"
puts "switchport access vlan #{value}"
end
puts "exit"
}
puts "show running-config"
Will generate the following configuration
enable terminal length 0 config terminal no logging console interface GigabitEthernet1/0/1 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport mode access switchport access vlan 1 exit interface GigabitEthernet1/0/2 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport mode access switchport access vlan 1 exit interface GigabitEthernet1/0/3 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport mode access switchport access vlan 1 exit interface GigabitEthernet1/0/4 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport mode access switchport access vlan 1 exit interface GigabitEthernet1/0/5 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport mode access switchport access vlan 2 exit interface GigabitEthernet1/0/6 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport mode access switchport access vlan 2 exit interface GigabitEthernet1/0/7 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport mode access switchport access vlan 2 exit interface GigabitEthernet1/0/8 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport mode access switchport access vlan 2 exit interface GigabitEthernet1/0/47 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport trunk encapsulation dot1q switchport mode trunk switchport trunk allowed vlan 1-4 exit interface GigabitEthernet1/0/48 no switchport trunk encapsulation dot1q no switchport mode trunk no switchport trunk allowed vlan no switchport mode access no switchport access vlan switchport trunk encapsulation dot1q switchport mode trunk switchport trunk allowed vlan 1-4 exit show running-config