Facing problem to configure Cisco 877w

[ajayprabhakar]

I want to configure 877w for my DSL connection. The service provider has provided me with a Zyxel 660R61 router for which configuration are :

Mode: Routing

Encapsulation: ENET ENCAP

MUX : LLC

PVC : 1/32

Static IP: As provided

Subnet Mask: As provided

GW IP: As provided

Note: The static ip is provided by the ISP

For 877w configuration,

I have configured interface atm0.1 with the given static ip and encapsulation as aal5snap plus added ip routing for the given Gateway.

Hereafter I am unable to ping the gateway. Debugging the IP packets shows only outgoing packets and no error is displayed. Please help me out.

PS: If someone else has configured Cisco 877w with static IP for Airtel(India), please guide me asap.

[paolo bevilacqua]

Hi,

possibly they are using "bridged" encapsulation and not routed. Please configure:

int atm0.1

no ip address

no ip nat outside

bridge-group 2

int bvi2

ip address

ip nat outside

bridge irb

bridge 2 route ip

Note: the reason of using 2 for BVI is that you should already have BVI1 for WLAN / LAN.

If still doesn't work, please send configuration after the changes indicated above.

[ajayprabhakar]

Hi

I tried configuring 877 for bridge+route mode as per the guide on cisco.com. Also I applied your suggested config however, there is no luck. My config are :-

!

bridge irb

!

!

!

interface ATM0

no ip address

ip virtual-reassembly

no atm ilmi-keepalive

dsl operating-mode itu-dmt

!

interface ATM0.1 point-to-point

no snmp trap link-status

atm route-bridged ip

pvc 1/32

encapsulation aal5snap

!

bridge-group 2

!

interface FastEthernet0

!

interface FastEthernet1

!

interface FastEthernet2

!

interface FastEthernet3

!

interface Dot11Radio0

no ip address

shutdown

speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0

54.0

station-role root

!

interface Vlan1

description $ETH-SW-LAUNCH$$INTF-INFO-HWIC 4ESW$

ip address 10.10.10.1 255.255.255.248

ip tcp adjust-mss 1452

!

interface BVI1

mac-address 001a.e321.abca

ip address dhcp client-id FastEthernet0

!

interface BVI2

ip address W.X.Y.Z 255.255.255.0

!

ip route 0.0.0.0 0.0.0.0 ATM0.1 w.x.y.z

!

!

ip http server

ip http access-class 23

ip http authentication local

ip http secure-server

ip http timeout-policy idle 5 life 86400 requests 10000

!

access-list 23 permit 10.10.10.0 0.0.0.7

no cdp run

!

!

!

!

control-plane

!

bridge 1 protocol ieee

bridge 1 route ip

bridge 2 route ip

Please suggest

[paolo bevilacqua]

Hi,

please configure:

interface ATM0.1 point-to-point

no atm route-bridged ip

interface Dot11Radio0

bridge-group 1

interface Vlan1

no ip address

bridge-group 1

no ip tcp adjust-mss 1452

interface BVI1

ip address 10.10.10.1 255.255.255.248

no mac-address 001a.e321.abca

ip nat inside

interface BVI2

ip nat outside

no ip route 0.0.0.0 0.0.0.0 ATM0.1 w.x.y.z

ip route 0.0.0.0 0.0.0.0 w.x.y.z

ip nat inside source list 7 interface bvi2 overload

If stil doesn't work, send revised config and output of "show atm pvc 1/32"

[zeuscyril]

hi ajay,

i am also trying the same you got the solution ..if u got the solution can you plz send the config to me

i am also having airtel connection with static ip connection (airtel provided the beetel modem)

thanks

cyril