4-38
Stinger®
IP2000 Configuration Guide
IP Router Configuration
Configuring bridged IP routing (BIR)
connection
interfaces
Figure 4-10. BIR interface on a LIM port
On the BIR interface, the system receives IP packets encapsulated in bridged frames.
The IP2000 decapsulates the packets and passes them up the protocol stack to the IP
router. To the IP host, the session appears to be an ordinary IP connection.
BIR configurations require the use of numbered interfaces, which assign both the
remote and local side of the connection a unique IP address. The remote address can
specify a subnet or an individual remote IP host. Typically, the local address for the
Stinger unit is a unique address on the remote subnet. For details about numbered
interfaces, see “Example of a numbered interface” on page 4-33.
Overview of
bir-options
and
ip-options
settings
In addition to the many possible IP routing parameters in
connection
and RADIUS
profiles, described in “Configuring IP connection interfaces for CPE devices” on
page 4-30, the following parameters apply to BIR interfaces. The parameters are
shown with default settings.
[in CONNECTION/"":bir-options]
enable = no
proxy-arp = no
[in CONNECTION/"":ip-options]
ip-routing-enabled = yes
remote-address = 0.0.0.0/0
local-address = 0.0.0.0/0
Bridged
Network side
User side
Bridge
CPE
Remote LAN
IP
IP host
Routed
IP host
Stinger IP2000
Stinger IP2000
Parameter
RADIUS attribute
Setting
enable
Ascend-BIR-Enable
(70)
Enable/disable BIR on this interface.
proxy-arp
Ascend-BIR-Proxy
(71)
Enable/disable proxy Address Resolution Protocol
(ARP), which causes the Stinger IP2000 to respond as
proxy for ARP requests from local hosts for remote
hosts on the far end of the link.
ip-routing-enabled
Ascend-Route-IP
(228)
Enable/disable IP routing on the interface.
remote-address
Framed-IP-Address
(8)
Framed-IP-Netmask
(9)
IP address of the remote device, which can include a
subnet specification. If the address does not include a
subnet mask, the router assumes the default subnet
mask based on address class.