Cisco 837 - RFC 1483 Bidge Encap & Routing

Hi guys,

Hope some can help me with configuring a Cisco 837 with Bridging (RFC1483) over ATM over ADSL.

The carrier is NEXTEP (Australia) which provides a TLAN (Transparent LAN) Product. They release a special version of firmware for Netcomm DSL modems for their TLAN product which basically puts the modem into bridged mode.

I would like to do it via a Cisco 837 and also have routing so that I can implement QoS for our office VoIP system.

I can ping my ATM BVI address but not the GW address.

I have a sample config below -

hostname Cisco837 ! logging queue-limit 100 logging buffered 51200 warnings ! ip subnet-zero ! ! ip audit notify log ip audit po max-events 100 no ftp-server write-enable ! ! ! ! ! bridge irb ! ! interface Ethernet0 description $ETH-LAN$$ETH-SW-LAUNCH$ ip address ip nat inside no ip mroute-cache hold-queue 100 out ! interface ATM0 no ip address no ip mroute-cache load-interval 60 no atm ilmi-keepalive pvc 8/35 encapsulation aal5snap ! dsl operating-mode itu-dmt bridge-group 1 hold-queue 224 in ! interface BVI1 ip address ip nat outside ! interface BVI2 ip address ip nat outside ! ip nat inside source list 1 interface BVI1 overload ip classless ip route ip http server ip http authentication local ip http secure-server ! access-list 1 permit bridge 1 protocol ieee bridge 1 route ip bridge 2 protocol ieee bridge 2 route ip ! line con 0 login local no modem enable stopbits 1 line aux 0 stopbits 1 line vty 0 4 privilege level 15 login local transport input telnet ssh ! scheduler max-task-time 5000 ! end


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hi, first i Think this statement has to be "ip nat inside" interface BVI1 ip address ip nat outside

next... do u have any connectivity to the internet? If so. maybe your ISP GW doesn't respond to ICMP. If not.. so maybe u provide some output from your routing table.

regards Sebastian

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