I am facing some problem to configure 877 router as a bridge mode. In my network scenario (LAN ip: 192.168.0.0/24) -----1841(ip 188.8.131.52) ------877------ (ATM0.1) ---Internet
Here i have attached the 877 router config. I can't ping the isp router from 1841 router.
Please let me know if i missing some configuration on 877 router.
I am confident that 1841 router configuration is ok.
In your scenario, the 877 is effectively used as a modem in bridging mode, and I'd advise using a standard modem the ISP normally supplies. If you want to use the 877 you need to link the internal interfaces connected to the 1841 with the external interface. This is done via a BVI.
In order to do the NAT on the 1841 you'd need to route traffic on the 877, but you'd have to have a public IP address on the 877 in the same range as on the 1841.
Another way would be to add the correct WIC to the 1841 and connect that directly to the internet, bypassing the 877 altogether.