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

[vinay pit]

Hi

U r using vlan 2 in ur scenario, check out as due to
STP loop this Vlan is getting blocked. U can try this
by using VLANs not configured in the switch. Try using
VLAN 300 and check if still the problem persist.

Are u using only one VLAN in ur scenario ? If more
that one then make the switch port as a Trunk Port and
allow vlans on that port which are needed by u.

Regards
Vinay

--- Rommel Rizzato <Rommel.Rizzato at irishbroadband.ie>
wrote:

> Hi
> 
> As far as I Know to have the sub-interfaces
> (Logical) tagged you should
> have the primary physical interface tagged as well.
> 
> Cheers
> Rommel
> 
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net
> [mailto:juniper-nsp-bounces at puck.nether.net] On
> Behalf Of Chris Davies
> Sent: 17 January 2006 11:07
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] Juniper M7i & Cisco 3650 vlan
> configuration
> difficulties
> 
> 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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> 
> 
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> 


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