ok, Thanks sir. If one other router I add inside router, my mean here firewall is connected with router and router is coonected also one router then it requirs any other command on firewall of new added router.

Can anyone reple me..

You will need to have

NEW ROUTER'S NETWORK 255.255.255.0 192.168.10.1

You have to point the network of ur new router towards the old router's e0 and ur old router must have proper routing configured to reach to the new router's network.

Rate if help.

Ray, if connecting a second router the same principle applies as first router's pix/asa static route entry. You indicated already have one router connected to inside under the 192.168.10.0/24 network with ip 192.168.10.1, for sake of example say your second router ip that you are connecting to asa in inside is 192.168.10.5 and that router advertizes another network e.g 20.20.20.0 then you need to tell pix/asa how to reach 20.20.20.0 net.

route entry should be:

route inside 20.20.20.0 255.255.255.0 192.168.10.5 1

It means if number of router will be adding then everytime it needs a new route command to tell the pix how to reach on added new network. But one confusion point is here, does it require this kind of commands on public router where we just put only default route and don't put any command for return traffic as we do same for pix.

can anyone reply??