[c-nsp] Non-cisco product integration into CISCO

[Peter Rathlev]

On Fri, 2008-01-04 at 16:40 +0800, Dracul wrote:
> The Amino STB is  using the standard dot1.q config and when connected to an
> HP switch using the same trunking its ok. its now with the cisco that we are
> getting problems. here's the cisco config
> 
> interface FastEthernet0/14
> switchport trunk encapsulation dot1q
> switchport trunk native vlan 100
> switchport mode trunk
> switchport nonegotiate
> end
> 
> There are two VLANs used in the network VLAN 1 and VLAN 100. what we are
> looking at is the VLAN 100

Maybe the Amino doesn't want an untagged VLAN, which the native VLAN is.
AFAIK Cisco devices needs one VLAN to be untagged (native), and if
you're using VLAN 1, which is the default native/untagged VLAN, you
might not benefit from "no switchport trunk native vlan". Try setting
the native VLAN to some unused VLAN. And remember that CDP neighbors
need the same native VLAN on each side. (I guess the Amino doesn't speak
CDP though.)

If the Amino is a Linux box there should be no problems. We have several
servers participating in dot1q trunks and STP with Cisco devices, and no
problems. (CentOS 4.5, kernel 2.6.9)

Regards,
Peter Rathlev