VPLS and Default CoS Classification
A VPLS routing instance with the no-tunnel-services option configured has a default classifier applied to the label-switched interface for all VPLS packets coming from the remote VPLS PE. This default classifier is modifiable only on MX Series routers.
For example, on routers with eight queues (Juniper Networks M120 and M320 Multiservice Edge Routers, MX Series Ethernet Services Routers, and T Series Core Routers), the default classification applied to no-tunnel-services VPLS packets are shown in Table 1.
Table 1: Default VPLS Classifiers
MPLS Label EXP Bits | Forwarding Class/Queue |
|---|---|
000 | 0 |
001 | 1 |
010 | 2 |
011 | 3 |
100 | 4 |
101 | 5 |
110 | 6 |
111 | 7 |
 | Note: Forwarding class to queue number mapping is not always one-to-one. Forwarding classes and queues are only the same when default forwarding-class-to-queue mapping is in effect. For more information about configuring forwarding class and queues, see Configuring Forwarding Classes. |
On MX Series routers, VPLS filters and policers act on a Layer 2 frame that includes the media access control (MAC) header (after any VLAN rewrite or other rules are applied), but does not include the cyclical redundancy check (CRC) field.
| Note: On MX Series routers, if you apply a counter in a firewall for egress MPLS or VPLS packets with the EXP bits set to 0, the counter will not tally these packets. |
