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Difference between revisions of "Cisco Switches"
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Untagged trunk ports
m (Protected "Cisco Switches" ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))) |
(Untagged trunk ports) |
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| (2 intermediate revisions by the same user not shown) | |||
| Line 51: | Line 51: | ||
</nowiki> | </nowiki> | ||
== Set IP address == | |||
So as to be able to telnet or SSH on (if supported) instead of using the serial console | |||
<nowiki> | |||
switch#conf t | |||
Enter configuration commands, one per line. End with CNTL/Z. | |||
switch(config)#int vlan1 | |||
switch(config-if)#ip address 192.168.1.2 255.255.255.0 | |||
switch(config-if)#exit | |||
switch(config)#ip default-gateway 192.168.1.1 | |||
switch(config)#exit | |||
switch#</nowiki> | |||
== Create VLANs == | == Create VLANs == | ||
Looking at the vlan setup doesn't require enable but changing it does. | Looking at the vlan setup doesn't require enable but changing it does. | ||
| Line 88: | Line 100: | ||
switch#conf t | switch#conf t | ||
Enter configuration commands, one per line. End with CNTL/Z. | Enter configuration commands, one per line. End with CNTL/Z. | ||
switch(config)#vlan | switch(config)#vlan 30 | ||
switch(config-vlan)#name | switch(config-vlan)#name servers | ||
switch(config-vlan)#exit | switch(config-vlan)#exit | ||
switch(config)#exit | switch(config)#exit | ||
switch#</nowiki> | switch#</nowiki> | ||
=== Setup trunk to Switch 2 === | |||
<nowiki> | |||
switch#conf t | |||
Enter configuration commands, one per line. End with CNTL/Z. | |||
switch(config)#int gi1/0/4 | |||
switch(config-if)#switchport trunk encapsulation dot1q | |||
switch(config-if)#switchport mode trunk | |||
switch(config-if)#switchport trunk allowed vlan remove 1-4094 | |||
switch(config-if)#switchport trunk allowed vlan add 30,40 | |||
switch(config-if)#exit | |||
switch(config)#exit | |||
switch#</nowiki> | |||
=== Setup trunk to Switch 1 === | |||
<nowiki> | |||
switch2#conf t | |||
Enter configuration commands, one per line. End with CNTL/Z. | |||
switch2(config)#int gi1/0/6 | |||
switch2(config-if)#switchport trunk encapsulation dot1q | |||
switch2(config-if)#switchport mode trunk | |||
switch2(config-if)#switchport trunk allowed vlan remove 1-4094 | |||
switch2(config-if)#switchport trunk allowed vlan add 30,40 | |||
switch2(config-if)#exit | |||
switch2(config)#exit</nowiki> | |||
This config can now be seen with sh run (only pasting the relevant section) | |||
<nowiki> | |||
switch2#sh run | |||
! | |||
interface GigabitEthernet1/0/1 | |||
switchport trunk encapsulation dot1q | |||
switchport trunk allowed vlan 30,40 | |||
switchport mode trunk | |||
!</nowiki> | |||
=== Port with untagged and tagged traffic === | |||
This is when a port is used as an access port and also has vlans available. Typically necessary for setting up something with a single interface. | |||
<nowiki> | |||
! | |||
interface GigabitEthernet1/0/2 | |||
description white wire | |||
switchport trunk encapsulation dot1q | |||
switchport trunk native vlan 40 | |||
switchport trunk allowed vlan 30,40,50 | |||
switchport mode trunk | |||
! | |||
</nowiki> | |||
In the above config it is necessary to have the "native" vlan (the equivalent of an access vlan, "switchport access vlan 40") also an allowed vlan for the trunk port. | |||