L2Ogre - Ruckus Wireless SmartCell Gateway 200 Reference Manual

L2oGRE

L2oGRE is a core network tunneling protocol, with the following features:
• The GRE header protocol type is 0x6558
• The GRE payload includes Ethernet header for the UE
• The only supported combination of access network protocol type is L2, which
includes Ruckus GRE and L2oGRE.
• ARPs are forwarded to the L2oGRE tunnel
• DHCP relay function is optionally configured. If it is not configured, the DHCP
packets are forwarded in the L2oGRE tunnel.
KeepAlive can be configured to L2oGRE gateway. The only KeepAlive mechanism
supported is ICMP echo/reply messages, which are sent or received from L2oGRE
gateway. The period for sending KeepAlive is m seconds (default = 10
seconds) and the total number of retries is n (default counter is 3). The
values for m and n are configurable from the CLI.
KeepAlive will always be answered, if it is received from the L2oGRE gateway. The
data plane sends a KeepAlive packet only if no user traffic is received from the
L2oGRE gateway within the KeepAlive period. An event is generated indicating that
the L2oGRE gateway is unreachable when the maximum number of retries exceeds.
This event occurs when L2oGRE does not receive an ICMP reply to an ICMP request
sent from the datablade.
SmartCell Gateway 200 Tunneling Interface Reference Guide for SmartZone 3.4.1, 800-71380-001 Rev A
Figure 2 displays the L2oGRE traffic flow.
Core Network Protocols
Core Network Protocols
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