[j-nsp] vlan-id 0
Nalkhande Tarique Abbas
ntarique at juniper.net
Thu Jul 9 09:39:33 EDT 2009
Hi
AFAIK, basically a unit 32767 is created implicitly when "vlan-tagging"
is enabled to pass untagged control traffic (like STP, LACP ... etc).
When a unit with vlan-id 0 is configured, this unit itself is used to
send the control traffic. So the unit 32767 then gets deleted.
ge-1/1/0 up up
ge-1/1/0.1 up up inet 1.1.1.0/31
ge-1/1/0.2 up up inet 2.2.2.0/31
ge-1/1/0.32767 up up
root at Sulfur# show | compare
[edit interfaces ge-1/1/0]
+ unit 0 {
+ vlan-id 0;
+ }
lab at Sulfur> show interfaces terse | match ge-1/1/0
ge-1/1/0 up up
ge-1/1/0.0 up up
ge-1/1/0.1 up up inet 1.1.1.0/31
ge-1/1/0.2 up up inet 2.2.2.0/31
Thanks & Regards,
Tarique A. Nalkhande
-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Bit Gossip
Sent: Thursday, July 09, 2009 6:13 PM
To: Juniper List
Subject: [j-nsp] vlan-id 0
Experts,
do you know what is the meaning of vlan-id 0?
According to: http://en.wikipedia.org/wiki/IEEE_802.1Q
"VLAN Identifier (VID): a 12-bit field specifying the VLAN to which the
frame belongs. A value of 0 means that the frame doesn't belong to any
VLAN; in this case the 802.1Q tag specifies only a priority and is
referred to as a priority tag"
How would I match this Juniper config:
show configuration interfaces ge-0/0/0
vlan-tagging;
unit 0 {
vlan-id 0;
family inet {
address 1.1.1.1/30;
}
}
on a cisco device on the other end of the cable where vlan starts from
1?
r2(config-subif)#encapsulation dot1Q ?
<1-4094> IEEE 802.1Q VLAN ID required
Thanks,
bit
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