Tunnel Combinations; Dhcp Processing - Ruckus Wireless SmartCell Gateway 200 Reference Manual

Tunnel Combinations

Table 7 lists the tunnel combinations for Ruckus Wireless and 3rd Party APs.
Table 7. Tunnel combinations
AP Type Access
Ruckus RGRE
Ruckus RGRE
Ruckus RGRE
Ruckus RGRE
3rd Party QinQ
3rd Party QinQ
3rd Party L2oGRE
3rd Party L2oGRE

DHCP Processing

DHCP relay processing is automatically enabled if the core forwarding profile is
TTG+PDG, which means that user configuration is not required. DHCP server is
always - control plane DHCP server.
The DHCP relay function data plane relays all UE packets to the SCG DHCP server.
For Ruckus GRE packets, the outer Ethernet/IP/UDP/GRE headers are stripped to
recover the UE packet. For 3rd Party AP QinQ access packets, the QinQ tags are
removed before the UE DHCP packet is forwarded to the DHCP server.
Control plane verifies whether the UE has been authenticated and if the session is
PDG or TTG. If the UE entry is not found, DHCP discover packet is silently dropped.
For TTG configuration, the control plane establishes the GTP tunnel to GGSN and
sends a DHCP offer with an assigned IP address back to the data plane.The DHCP
relay function on the data plane forwards the DHCP reply packets from the DHCP
server back to the UE. For UE from Ruckus APs, the DHCP reply packets are sent
back via the Ruckus GRE tunnel. For UE from 3rd Party APs, the DHCP reply packet
is tagged with the appropriate SVLAN/CVLAN and sent back to the UE.
If the control plane is unable to establish the GTP tunnel to GGSN or if the UE is not
authenticated, the control plane silently drops the DHCP discover message.
SmartCell Gateway 200 Tunneling Interface Reference Guide for SmartZone 3.4.1, 800-71380-001 Rev A
Core
Open Hotspot
Bridge (0-2 tags)
L2oGRE
TTG+PDG (0-2 tags)
Mixed Tunnel Mode
Bridge (0-2 tags)
TTG+PDG (0-2 tags)
Bridge (0-2 tags)
TTG+PDG (0-2 tags)
Tunnel Combinations and DHCP Processing
Authentication
802.1X
(WISPr) EAP
X X X
X X X
X X
X
X X
X
X X
X
Tunnel Combinations
MAC Hotspot
Address 2.0
X X
X X
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