VeEX MPA User Manual page 609

MPA_e_manual_D07-00-129P_RevA00
Protocol Tabs
8. Select Save All to apply the setting and close the Traffic Stream Profile dialog
box.
Each VLAN tag adds an addition 4-bytes to the Ethernet Stream, consisting of the
following settings:
•
TPID (Tag Protocol Identifier): The default value is 0x8100, but the menu lets
you select 0x88A8, 0x9100, 0x9200 or enter a 2-byte User Defined HEX value.
•
PCP/QOS (Priority Code Point/Quality Of Service): This indicates the frame
priority level and is a 3-bit field ranging from the default value of 0 (best effort) to
7 (highest priority).
•
DEI (Drop Eligible Indicator, formerly called CFI) : This is a 1-bit setting that
should remain set to the default value of 0, for Ethernet networks.
•
VID (VLAN ID): This is a 12-bit decimal identifier ranging from 0 to 4095, used for
the switching operation. The VID value 4095 is reserved for implementation use;
and should not be configured or transmitted.
Enabling MPLS Label Stacking
MPLS (Multi-Protocol Label Switching) is a set of procedures for augmenting IPv4
and IPv6 packets with "label stacks", thereby turning them into "labeled packets". These
labels act as a shorthand representation of the IP packet's header. Routers which
support MPLS are known as "Label Switching Routers", or "LSRs".
The Traffic Stream Profile
configured per Ethernet Stream.
To enable Stacked MPLS labeling:
1. Select the Stream you want to enable MPLS tagging on by clicking the desired
stream in the Stream Profile table. The Traffic Stream Profile dialog box
appears.
2. From the Traffic Stream Profile dialog box, select the button next to No
MPLS/VLAN tag and choose MPLS Tagging from the Select Tagging menu.
3. Once MPLS has been enabled, MPLS Level 1 becomes enabled and allows you
to modify that label's settings:
609
dialog box allows up to 4 Stacked MPLS labels to be