Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 599)

Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide 575
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VLL raw-pass-through overview
4
Packet handling behavior
Depending on the type of endpoints configured on the VLL instance, VLL instance has the packet
processing behavior listed in
Table 90 .
TABLE 99 Packet tag insertion and stripping decision
Local endpoint type Packet received from local endpoint
destined towards remote peer (MPLS
uplink). Packet received from local remote peer
(MPLS uplink) destined towards local
endpoint.
Untagged endpoint No additional tag is inserted in the packet.
Behaves the same as the “raw-mode”. No tag stripping from the received MPLS
uplink packet. Behaves the same as the
“raw-mode”.
Tagged endpoint Insert the received VLAN Tag into the MPLS
uplink packet with the PCP value preserved.
Behaves the same as the “tagged-mode”. Strip out the tag from the received MPLS
uplink packet. Behaves the same as the
“tagged-mode”.
Ta
TABLE 100 VC mode definitions
VC Mode PW VC type signaled to remote peer through LDP
Raw-mode 0x5 (Ethernet-type)
Tagged-mode 0x4 (Ethernet tagged)
Raw-pass-through 0x5 (Ethernet-type) - for untagged endpoint
0x4 (Ethernet tagged) - for tagged endpoint
ble 91 reviews the VC mode definitions.