Brocade Mobility RFS Controller CLI Reference Guide (Supporting software release 5.5.0.0 and later) User Manual
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Brocade Mobility RFS Controller CLI Reference Guide
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gre
gre
Enables Generic Routing Encapsulation (GRE) tunneling on this profile, and creates a new GRE
tunnel or modifies an existing GRE tunnel.
The GRE protocol allows encapsulation of one protocol over another. It is a tunneling protocol that
transports any layer 3 protocol over an IP network. When enabled, a payload packet is first
encapsulated in the GRE protocol. The GRE encapsulated payload is then encapsulated in another
IP packet before being forwarded to the destination.
GRE tunneling can be configured to bridge Ethernet packets between WLANs and a remote WLAN
gateway over an IPv4 GRE tunnel. The tunneling of 802.3 packets using GRE is an alternative to
MiNT or L2TPv3. Related features like ACLs for extended VLANs are still available using layer 2
tunneling over GRE.
Using GRE, access points map one or more VLANs to a tunnel. The remote end point is a
user-configured WLAN gateway IP address, with an optional secondary IP address should
connectivity to the primary GRE peer be lost. VLAN traffic is expected in both directions in the GRE
tunnel. A WLAN mapped to these VLANs can be either open or secure. Secure WLANs require
authentication to a remote RADIUS server available within your deployment using standard RADIUS
protocols. Access Points can reach both the GRE peer as well as the RADIUS server using IPv4.
NOTE
Only one GRE tunnel can be created for every profile.
Supported in the following platforms:
•
Access Points — Brocade Mobility 650 Access Point, Brocade Mobility 6511 Access Point,
Brocade Mobility 1220 Access Point, Brocade Mobility 71XX Access Point, Brocade
Mobility 1240 Access Point
•
Wireless Controllers — Brocade Mobility RFS4000, Brocade Mobility RFS6000, Brocade
Mobility RFS7000
•
Service Platforms — Brocade Mobility RFS9510
Syntax:
gre tunnel
Parameters
Command
Description
Reference
Enables GRE tunneling on a profile/device This command also creates a GRE tunnel and
enters its configuration mode. Use this command to modify an existing GRE tunnel’s
settings.
Summarizes GRE tunnel configuration mode commands