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3
Interfaces
E1: up to 31 64-Kbps channels
The E1 interface conforms to European Digital Hierarchy standards, with up to 31 64-Kbps channels for
a maximum of 1984 Kbps.
When you click this link, the Manager opens the Configuration | Interfaces | WAN Card in Slot N | Port A B as
E1
screen, which lets you configure E1 parameters.
Configuration | Interfaces | WAN Card in Slot N |
Port A B as T1 or E1
This screen lets you configure parameters for the WAN interface port you selected. The Dual T1/E1
WAN module for the VPN Concentrator includes two WAN interfaces, one on Port A and the other on
Port B. The WAN interfaces primarily serve as a public interface to the Internet.
• If you connect to a WAN via an ISP, configure that connection on Port A. You can use Port B to
provide PPP Multilink for increased bandwidth. You cannot connect Port B to a WAN from a different
ISP.
• If you connect to private WANs, you can configure independent WAN connections on Port A and Port
B.
The WAN module supports complete T1/E1 interfaces and fractional T1/E1 interfaces. You can select
T1/E1 bandwidth by configuring specific DS0 (Digital Signal 0) channels. See the Timeslots parameter
on the WAN Parameters tab.
You set the interface type (T1 or E1) on the Configuration | Interfaces | WAN Card in Slot N | Port A B | Select
T1/E1
Configuring a WAN interface includes supplying an IP address, identifying it as a public interface,
applying a traffic-management filter, configuring RIP and OSPF routing protocols, and setting T1- or
E1-specific parameters to match those of your T1/E1 carrier. You can also configure PPP Multilink.
To apply a custom filter, you must configure the filter first; see Configuration | Policy Management | Traffic
Management
Using the tabs
This screen includes five tabbed sections. Click each tab to display its parameters. As you move from
tab to tab, the Manager retains your settings. When you have finished setting parameters on all tabbed
sections, click Apply or Cancel .
3-16
screen. Once chosen, the type is permanent and applies to both ports (interfaces) on the module.
.
VPN 3000 Concentrator Series User Guide
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