FD 100/320Gbps NT and FX NT IHub Services Guide Virtual Private LAN Service
Issue: 13 3HH-11985-AAAA-TQZZA 183
Figure 25 Configurable TPID
The per-service TPID is set as follows:
1 Configure a TPID to be used at the service level (for example, 0x88a8 (or any
other ether type other than 0x8100))
2 Enable the use of this TPID on the underlying ports of all SAPs belonging to this
service, for which the service level TPID is to be used.
The use of service level TPID is enabled at the port level. For all other SAPs on the
port belonging to other services where no service level TPID has been configured, a
system-level default TPID will be used.
5.4.12 External Packet Forwarding (EPF)
External Packet Forwarding is an Nokia proprietary feature to support Lawful
intercept in a H.248 based voice network.
To support this in IHUB, the IP address of a router 'R' will be configured in a v-VPLS
which carries voice traffic. This IP address will act as the next-hop for all up-stream
voice packets from the voice LTs in the v-VPLS.
ISAM will send an ARP message to find out the MAC address of the router 'R' and
will send the voice packets with the real IP destination address and the MAC of router
"R" as the MAC destination.
When EPF is enabled, the hair-pinning is disabled automatically on the service.
Region A
NSP
Network
Distrib
Outer VID
0x8100
*
*
Data
Outer VID
0x88a8
*
*
Data
Outer
VID?
Outer VID
0x8100
*
*
Data
NT
LT
C-IBridge
S+C-IBridge
Tunnel-IBridge
C-VLAN
S+C-VLAN
Tunnel-VLAN
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