[j-nsp] Juniper M7i & Cisco 3650 vlan configuration difficulties

[Hyunseog Ryu]

Since you configured Juniper side as dot1q, you should configure Cisco 
port as dot1q.

Here is the example for Cisco 3650 configuration.

interface GigabitEthernet0/1
  switchport
  no ip adress
  switchport trunk encap dot1q
  switchport trunk encapsulation dot1q
  switchport mode trunk
exit
interface vlan2
   ip address x.x.195.250 255.255.255.252

This will do it.

Hyun


Chris Davies wrote:
> I've got a Juniper M7i and a Cisco 3650.  I need to run vlan-tagging on
> the interface that connects the two due to another piece of hardware 
> which requires it.
>
> Juniper:
>
>      ge-1/3/0 {
>          description "Aggregate LAN";
>          vlan-tagging;
>          link-mode full-duplex;
>          unit 0 {
>              vlan-id 2;
>              family inet {
>                  address xx.xx.195.249/30;
>              }
>          }
>      }
>
> Cisco:
>
> interface GigabitEthernet0/1
>   no switchport
>   ip address x.x.195.250 255.255.255.252
>
> As soon as I add the vlan-tagging to the gigE port on the Juniper, the
> two units cannot communicate.
>
> I also tried to configure the GigE port on the cisco as
>
> interface vlan 2
>    ip address x.x.195.250 255.255.255.252
> interface GigabitEthernet0/1
>    switchport access vlan 2
>
> However, that also does not work.  Cisco's vlan is an internal 
> designation, not 802.1q.
>
> If I try to turn on 802.1q encapsulation:
>
> #switchport trunk encapsulation dot1q
> Command rejected: Gi0/1 not a switching port.
>
> #switchport encapsulation dot1q
> Command rejected: Gi0/1 not a switching port.
>
> Is there a way to configure a port so that the primary interface doesn't 
> require vlan tagging, but a secondary interface does?  Or, is there a 
> way to assign two other IPs as VLANS that are not attached to an 
> interface but are able to be reached through a direct IP address?
>
> Thank you.
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