13 - 96 WiNG 5.6 Access Point System Reference Guide
The Access Point L2TPv3 Tunnels screen displays the following:
Tunnel Name
Displays the name of each listed L2TPv3 tunnel assigned upon creation. Each listed tunnel
name can be selected as a link to display session data specific to that tunnel. The Sessions
screen displays cookie size information as well as psuedowire information specific to the
selected tunnel. Data is also available to define whether the tunnel is a trunk session and
whether tagged VLANs are used. The number of transmitted, received and dropped packets
also display to provide a throughput assessment of the tunnel connection. Each listed session
name can also be selected as a link to display VLAN information specific to that session. The
VLAN Details screen lists those VLANs used an access point interface in L2TP tunnel
establishment.
Local Address Lists the IP address assigned as the local tunnel end point address, not the tunnel interface’s
IP address. This IP is used as the tunnel source IP address. If a local address is not specified,
the source IP address is chosen automatically based on the tunnel peer IP address.
Peer Address Lists the IP address of the L2TP tunnel peer establishing the tunnel connection.
Tunnel State States whether the tunnel is idle (not utilized by peers) or is currently active.
Peer Host Name Lists the assigned peer hostname used as matching criteria in the tunnel establishment
process.
Peer Control
Connection ID
Displays the numeric identifier for the tunnel session. This is the peer pseudowire ID for the
session. This source and destination IDs are exchanged in session establishment messages
with the L2TP peer.
CTRL Connection ID Displays the router ID(s) sent in tunnel establishment messages with a potential peer device.
Up Time Lists the amount of time the L2TP connection has remained established amongst peers sharing
the L2TPv3 tunnel connection. Up Time is displayed in a Days: Hours: Minutes: Seconds:
format. If D:0 H:0 M:0 S:0 is displayed, the tunnel connection is not currently established.
Encapsulation
Protocol
Displays either IP or UDP as the peer encapsulation protocol. The default setting is IP. UDP
uses a simple transmission model without implicit handshakes. Tunneling is also called
encapsulation. Tunneling works by encapsulating a network protocol within packets carried by
the second network.
Critical Resource Lists critical resources for this tunnel. Critical resources are device IP addresses on the
network (gateways, routers etc.). These IP addresses are critical to the health of the network.
These device addresses are pinged regularly by access points. If there’s a connectivity issue,
an event is generated stating a critical resource is unavailable.
VRRP Group Displays the VRRP group name if configured. VRRP configurations support router redundancy
in a wireless network requiring high availability
Establishment
Criteria
Displays the tunnel establishment criteria for this tunnel. Tunnel establishment involves
exchanging 3 message types (SCCRQ, SCCRP and SCCN) with the peer. Tunnel IDs and
capabilities are exchanged during the tunnel establishment with the host.
Refresh Select the Refresh button to update the screen’s statistics counters to their latest value.
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