[j-nsp] loop detection on EX4200

[Victor Sudakov]

Ben Dale wrote:
> 
> > No, LLDP does not work either across the multiplexer. If I configure a
> > vlan tag on the "default" vlan on the EX42, LLDP starts seeing the
> > EX42 on the other side.
> > 
> > That was the reason I had suggested that the multiplexer did not
> > forward untagged frames.
> 
> That is certainly odd.  Even on a trunked interface with no native-vlan configured at all, LLDP PDUs should still be sent untagged:
> 
> bdale at elow-core-01# show interfaces ge-1/1/5                               
> vlan-tagging;
> unit 3830 {
>     vlan-id 3830;
>     family inet {
>         address 10.237.18.29/31;
>     }
>     family mpls;
> }

This is probably because your interface is in the "vlan-tagging" mode,
while mine is "family ethernet-switching" mode.


-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
sip:sudakov at sibptus.tomsk.ru