
Scenarios 203
For PPPoE over DSL, the DSL CPE is also configured for pure RFC 1483 bridging, as shown
in Example 8-29.
When a PPP connection is made, a virtual interface is created, as shown in Example 8-30. The
connection is authenticated with PAP/CHAP (using username “cisco” and password “cisco”).
IP addresses are negotiated and handed out from the address pool named ccnp.
Example 8-29 RFC 1483 Bridging Configuration for the Cisco 827
hostname lab-827D
!
ip subnet-zero
no ip routing
!
interface Ethernet0
no ip address
no ip directed-broadcast
no ip mroute-cache
bridge-group 1
!
interface atm0
mac-address 0001.96a4.8fae
ip address 10.1.121.2 255.255.255.0
no ip directed-broadcast
no ip mroute-cache
no atm ilmi-keepalive
pvc 1/52
encapsulation aal5snap
!
bundle-enable
bridge-group 1
hold-queue 224 in
!
ip classless
no ip http server
!
bridge 1 protocol ieee
Example 8-30 Verifying the Virtual Interface
lab-6400NRP#show int Virtual-Access3
Virtual-Access3 is up, line protocol is up
Hardware is Virtual Access interface
Description: PPPoE
Interface is unnumbered. Using address of Ethernet0/0/0 (10.1.1.190)
MTU 1492 bytes, BW 100000 Kbit, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 5 seconds on reset
LCP Open
Open: IPCP
continues
0732x01.book Page 203 Monday, November 17, 2003 2:49 PM
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