S-Vlan Oversubscription - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

svlan id

S-VLAN Oversubscription

Copyright © 2010, Juniper Networks, Inc.
Use to create an S-VLAN tunnel interface for configuring Ethernet layer 2 services over
MPLS.
Assign an S-VLAN ID value in the range 0–4095 that is unique within the Ethernet
interface.
Use the any keyword to tunnel traffic from VLANs configured with the specified S-VLAN
ID and any VLAN ID to the same destination across an MPLS network.
Issue the svlan id command with the any keyword before you configure the upper
binding, which must be an MPLS tunnel interface. Attempting to configure any other
interface type over the S-VLAN tunnel causes an error.
Example
host1(config-if)#svlan id 1000 any
There is no no version.
See svlan id.
When you configure S-VLAN subinterfaces over Ethernet interfaces to support dynamic
PPPoE subinterfaces, you can take advantage of S-VLAN oversubscription.
The following module combinations support S-VLAN oversubscription:
GE/FE line module and all of its associated I/O modules
GE-2 line module and the GE-2 SFP I/O module
GE-HDE line module and its associated I/O modules
OC3/STM1 GE/FE line module and the OC3-2 GE APS I/O module
ES2 4G LM and its associated Gigabit Ethernet and 10-Gigabit Ethernet IOAs
ES2 10G LM and its associated Gigabit Ethernet and 10-Gigabit Ethernet IOAs
The maximum number of S-VLANs that you can create per I/O module with PPPoE major
interfaces stacked over them is greater than the maximum number of dynamic PPPoE
subinterfaces. The maximum number of PPP interfaces supported per line module is
directly proportional to the maximum number of PPPoE subinterfaces.
As a result, you can oversubscribe S-VLANs by configuring up to the maximum number
of S-VLANs supported on these I/O modules, knowing that no more than the maximum
number of supported PPP sessions can be connected to the router at any one time.
For configuration instructions, see "Configuring Dynamic PPPoE over Static PPPoE with
Ethernet and S-VLAN Interface Columns" on page 539 in "Configuring Dynamic Interfaces"
on page 511.
Chapter 5: Configuring VLAN and S-VLAN Subinterfaces
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