[c-nsp] Problem with NPE-G1

[Justin M. Streiner]

On Sat, 7 Jan 2006, Robert Hass wrote:

> I've Cisco 7206VXR (with NPE-G1) router connected to Catalyst switch
> over copper 1000BaseT connection. Every time When I'm adding
> subinterface
> at Gi0/1 the whole Gi0/1 went, eg:
>
> conf t
>  int giga0/1.200
>
> Then on switch:
>
> %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1,
> changed state to down
> %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state to down
> %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state to up
> %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1,
> changed state to up

Sounds like it could be a native VLAN mismatch.  If you do some dot1q 
debugging on either side, a native VLAN mismatch will show up clearly.

Try this:

One the 7200:
int gig0/1.200
encaps dot1q 200 native

On the switch:
int gig0/1
switchport trunk native vlan 200
switchport trunk allowed vlan add 200

Do not add the "native" tag to any other VLANs you add to this trunk.

Let me know if that works.

jms

> Configuration:
>
> 7200:
>
> interface GigabitEthernet0/1
> no ip address
> duplex full
> speed 1000
> media-type rj45
> no negotiation auto
> no cdp enable
> no clns route-cache
>
> 3650G:
>
> interface GigabitEthernet0/1
> switchport trunk encapsulation dot1q
> switchport mode trunk
> load-interval 30
> speed 1000
> duplex full
> no mdix auto
> no cdp enable
> end
>
> 7200 is running 12.2(25)S4, and the Catalyst is running 12.2(25)SED1.
> The cabling is 100% OK. Any recommendations or advices ?
>
> Earlier Giga0/1 was connected to other Catalyst over 1000BaseSX
> (using SX GBIC at NPE-G1) connection - and earlier there was no
> problem...
>
> Thanks,
> RobertH
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