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Reference Deployment Methods

This page documents the common subscriber encapsulation models supported by osvbng. Each section shows the Ethernet frame format as seen on the access-facing interface (the handover from the access network).

How do the packets look in each deployment method?

IPoE

N:1 Single Tagged IPoE - Ethernet Handover

Dst MAC6 bytes
Src MAC6 bytes
Outer VLAN4 bytes
EtherType2 bytes
IP PacketVariable
802.1Q VLAN Header
Ethernet Frame

Subscribers share outer VLAN.

Identified by tuple Src MAC + Outer VLAN ID.

N:1 Double Tagged IPoE - Ethernet Handover

Dst MAC6 bytes
Src MAC6 bytes
0x88a82 bytes
Outer VLAN2 bytes
0x81002 bytes
Inner VLAN2 bytes
EtherType2 bytes
IP PacketVariable
802.1(ad|Q) S-Tag
802.1Q C-Tag
Ethernet Frame

Subscribers share outer VLAN but inner VLANs are shared by 1 or more subscribers.

Identified by tuple Src MAC + Outer VLAN ID + Inner VLAN ID.

1:1 Double Tagged IPoE - Ethernet Handover

Dst MAC6 bytes
Src MAC6 bytes
0x88a82 bytes
Outer VLAN2 bytes
0x81002 bytes
Inner VLAN2 bytes
EtherType2 bytes
IP PacketVariable
802.1(ad|Q) S-Tag
802.1Q C-Tag
Ethernet Frame

Subscribers are unique across Outer VLAN and Inner VLAN combos.

Identified by Src MAC + Outer VLAN ID + Inner VLAN ID.

PPPoE

N:1 Single Tagged PPPoE - Ethernet Handover

Dst MAC6 bytes
Src MAC6 bytes
0x81002 bytes
Outer VLAN2 bytes
EtherType2 bytes
PPPoE6 bytes
PPP2 bytes
IP PacketVariable
802.1Q S-Tag
PPPoE Session
Ethernet Frame

Subscribers share outer VLAN.

Identified by tuple Src MAC + Outer VLAN ID + PPP Session ID.

N:1 Double Tagged PPPoE - Ethernet Handover

Dst MAC6 bytes
Src MAC6 bytes
0x88a82 bytes
Outer VLAN2 bytes
0x81002 bytes
Inner VLAN2 bytes
EtherType2 bytes
PPPoE6 bytes
PPP2 bytes
IP PacketVariable
802.1(ad|Q) S-Tag
802.1Q C-Tag
PPPoE Session
Ethernet Frame

Subscribers share outer VLAN but inner VLANs are shared by 1 or more subscribers.

Identified by tuple Src MAC + Outer VLAN ID + Inner VLAN ID + PPP Session ID.

1:1 Double Tagged PPPoE - Ethernet Handover

Dst MAC6 bytes
Src MAC6 bytes
0x88a82 bytes
Outer VLAN2 bytes
0x81002 bytes
Inner VLAN2 bytes
EtherType2 bytes
PPPoE6 bytes
PPP2 bytes
IP PacketVariable
802.1(ad|Q) S-Tag
802.1Q C-Tag
PPPoE Session
Ethernet Frame

Subscribers are unique across Outer VLAN and Inner VLAN combos.

Identified by Src MAC + Outer VLAN ID + Inner VLAN ID + PPP Session ID.