Enterasys Networks X-PeditionTM manual Configuration Examples, Inverse ARP, QoS, PPPoE

Configuration Examples

Inverse ARP

The XSR employs Inverse ARP as defined in RFC-1293 with modifications specified by RFC-2225 (Classical IP over ATM). Inverse ARP is supported for PVCs which are configured as Routed IPv4 circuits (per RFC-1483), using LLC/SNAP encapsulation. This implementation will not send an ATM hardware address and addresses received will be discarded. Only the IP address is used.

The XSR will respond to but not send Inverse ARP requests.

QoS

The XSR supports QoS functionality over an ADSL line.

SNMP

The ADSL interface creates and maintains entries in the Interface Table as required by NetSight. Entries will be made in the table for the following:

•ADSL Driver

•ATM Interface

•ATM Sub-Interface

•IP Interface

•PPP (when configured)

Configuration Examples

The following examples describe PPPoE, PPPoA, and IPoA configuration scenarios. When configuring PPPoE for the first time, be sure to insert the DSP CompactFlash card in the CompactFlash slot (refer to the XSR Getting Started Guide for further instructions).

Note: ADSL configuration on XSR 1200 Series routers is significantly different than for XSR 1800 and 3000 routers. For example, only interfaces FastEthernet 0:<1-2>.<1-30>and ATM 0.<1-30>are configurable on the XSR 1200 Series. For more information, refer to the XSR 1220/ 1235 Getting Started Guide.

PPPoE

The following commands configure a sample PPPoE topology. The first set configures the LAN interface with directed broadcasts prohibited..

Note: All ATM examples in this chapter reference Ethernet interfaces on XSR 1800/3000 Series routers.

XSR(config)#interface FastEthernet1

XSR(config-if<F1>)#ip address 192.168.1.1 255.255.255.0

XSR(config-if<F1>)#no ip directed-broadcast

XSR(config-if<F1>)#no shutdown

The commands below configure the ATM interface and sub-interface with a negotiated IP address, PAP username and password, and ban keepalives. They also reset default PVC VPI and

13-8 Configuring ADSL