User`s manual

DuraMAR 2150 – User’s Manual

Dynamic Bridge Mode

In Dynamic Bridge Mode the carrier-assigned public IP address is made available to the CISCO 3200 ISR

FastEthernet interface using the DHCP-protocol; then the first (.1) or last (.254) IP address of the network

that this address belongs to is automatically assigned to the ECC Ethernet interface in order to guarantee

local IP-connectivity.

For example if the carrier assigns 114.22.34.2 to the PPP connection this address will be made available to

the CISCO 3200 ISR using DHCP and the address 114.22.34.1 will be assigned to the ECC

eth0 interface.

In this case DHCP responses will contain 114.22.34.1 as default gateway.

Dynamic Bridge Mode is the default mode and must be used when the IP address assigned by the wireless

provider is not fixed but can change from one connection to another.

An example of a Dynamic Bridge Mode configuration follows:

! Version 0.1

hostname myhost-hsdpa

interface eth0

no IP address

enable

interface hsdpa0

IP address negotiated

apn myhost

pppbridge eth0 dynamic

enable

Note that, with this configuration, the eth0 interface can’t have an IP address assigned.

The CISCO 3200 ISR must be configured accordingly as in the example below:

interface FastEthernet0/0

ip address 10.200.1.24 255.255.0.0

duplex auto

speed auto

..........

interface FastEthernet1/3

interface Vlan1

ip address dhcp

Note that in this case the IP address of vlan1 interface is dynamically assigned by the DHCP server.

Static Bridge Mode

Static Bridge Mode should be used when the carrier-assigned public IP address is fixed. In this case, there is

no need to use the DHCP-protocol, while the fixed address can be directly configured to the CISCO 3200

ISR Ethernet interface and the IP address assigned to the

eth0 interface of the HSDPA controller must be

chosen and configured by the user. This address must also be defined as default gateway on the CISCO

3200 ISR.

Forcing the cellular network to use

By default the hsdpa0 interface automatically uses the 2G (GSM) or 3G (WCDMA) network depending on the

quality of the signal.

You can force the device to use only 2G or only 3G networks using the

mode command.