Configuring a Cisco 828 for multiple IPs

Mar 25, 2005 2 Replies

Having a bit of a nightmare at the moment with our new Cisco 828. Hav spent many hours on the phone to Cisco and have the followin configuration but I think it is setup for when an ISP provides static IP and not a range which we have


interface Ethernet no shu ip address 10.10.10.1 255.0.0. ip nat insid no ip directed-broadcas



interface ATM no shu no ip addres no ip directed-broadcas no atm ilmi-keepaliv bundle-enabl



interface ATM0.1 point-to-poin no ip directed-broadcas pvc 0/3 encapsulation aal5mux ppp diale dialer pool-member



interface Dialer ip address negotiate no ip directed-broadcas ip nat outsid encapsulation pp dialer pool ppp chap hostname ***@sdsl-provider.co ppp chap password ****** ppp pap sent-username ***@sdsl-provider.com password ******



ip nat inside source list 1 interface Dialer1 overloa



ip route 0.0.0.0 0.0.0.0 dialer access-list 1 permit 10.10.10.1 255.0.0.



Now basically we have an IP range provided to us by our SDSL provide which I have provided below (have changed the IPs from the rea ones!)



Static IP Range: 200.150.90.32/4



Subnet: 255.255.255.24



I am under the impression that the second IP should be assigned to th



router (200.150.90.33) and that we can then have traffic passe through to web servers ie 200.150.90.34 etc. Now I understand Cisco' CRWS interface has a fit if you change it's IP so I am happy to kee the local LAN in the 10.10.10.1 255.0.0.0 range but have no idea ho to tell the router about all this info while keeping our SDSL line u and running



Hopefully you can help me find a solution to a problem that is no



written about anywhere



Many thanks



Brun



Not sure what CRWS is?

Anyway I think you are trying to do this.

ip nat inside source static tcp 10.10.10.10 200.150.90.34 eq 80

This will take any traffic from 200.150.90.34 destined to port 80 and send it to port 80 on 10.10.10.10.

Is this what your after?

D

Just telnet or make a console connection to the router, get into enable mode and then do:

router#configure terminal ... router(config)#interface Ethernet0 router(config-if)#ip address 255.255.255.240 secondary router(config-if)#end router#copy running-config startup-config ... router#

Now you can use addreses 34 to 46 for your local hosts.

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