[ Contents] [ Prev] [ Next] [ Index] [ Report an Error]

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 not modifiable.

For example, on routing platforms with eight queues (M120, M320, MX-series, and T-series routing platforms), the default classification applied to no-tunnel-services VPLS packets are shown in Table 5.

Table 5: 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.


[ Contents] [ Prev] [ Next] [ Index] [ Report an Error]