Junos OS

Dear All,

i am new in juniper router configuration. i am trying to tag VLAN on Interface.

But only Tagged VALN 100 is able to communicate, Unit 0 IP cant communicate.

When i remove vlan-id 0 from Unit 0 i am getting error on commit.

router# show interfaces fe-0/0/1 vlan-tagging; 
unit 0 {

vlan-id 0;
family inet {
address 192.168.1.1/30;
}
}
unit 100 {
vlan-id 100;
family inet {
address 10.100.100.1/30;
}
}


[edit]
router# commit check [edit interfaces fe-0/0/1] 
'unit 0'
VLAN-ID must be specified on tagged ethernet interfaces
error: configuration check-out failed

Please help 

Regards 

Do not use vlan-id 0 (lowest and highest are reserved). It is reserved.  Use another vlan-id. In fact unless you are interoperating with CISCO, avoid using vlan-id 1 also

Dear lyndidon,

Thansk for reply

Yes I am using Cisco router One side.

if i am using cisco Router  it is working 

But juniper how it will work as one side cisco and other side Juniper 

Cisco Config

interface FastEthernet4/0

ip address 192.168.1.1 255.255.255.252
!
interface FastEthernet4/0.100
encapsulation dot1Q 100
ip address 10.100.100.1 255.255.255.252
!

That is, add VLAN-tagged logical subinterfaces to a non-tagged physical
interface.

Please advice how can i use same config on junper.

Regards 

Vikas 

Unfortuantely I do not know what those CISCO commands are doing. I will defer to those whore knowledgeable and will help you soon enough.

It looks like the 'native VLAN' feature is only available on certain PICs (physical interface cards) for the MX platform.  It may be availble on some others, you don't mention what platform you are using but it is pretty unlikely you'll be able to use a native vlan with the 'vlan tagging' config on the physical port.

The easiest thing to do would be to change the Cisco side config to use tags for both subints, something like this:

interface FastEthernet4/0.50

encapsulation dot1Q 50

ip address 192.168.1.1 255.255.255.252
!
interface FastEthernet4/0.100
encapsulation dot1Q 100
ip address 10.100.100.1 255.255.255.252

And do something comparable on the Juniper side.

Here is some info:

http://www.juniper.net/techpubs/en_US/junos13.3/topics/usage-guidelines/interfaces-enabling-vlan-tagging.html#id-12185086