Sheaf Saint Posted 14 January, 2009 Share Posted 14 January, 2009 I've recently acquired a Cisco 837 router and I'm trying to configure it to connect to my ISP (Plusnet) but there seems to be a problem with the routing and I don't really have enough knowledge about Cisco routers to know how to fix it. Can anyone help? Link to comment Share on other sites More sharing options...
saint_stevo Posted 14 January, 2009 Share Posted 14 January, 2009 you got an I.P for it from your ISP? Link to comment Share on other sites More sharing options...
Sheaf Saint Posted 14 January, 2009 Author Share Posted 14 January, 2009 I've got the IP from Plusnet but when I run the connection test it tells me that I need to configure either a user-specific or a default route to work with the ADSL interface, and I don't know what information I need in order to do that. Link to comment Share on other sites More sharing options...
saint_stevo Posted 14 January, 2009 Share Posted 14 January, 2009 i guess u have wiped it since 'acquiring' it? Link to comment Share on other sites More sharing options...
Sheaf Saint Posted 14 January, 2009 Author Share Posted 14 January, 2009 It was factory defaulted when I got it. Bought it off ebay for £35, hence I don't have a support contract with Cisco themselves. Link to comment Share on other sites More sharing options...
saint_stevo Posted 14 January, 2009 Share Posted 14 January, 2009 hmmmmm and google kicks up nothing. EDIT- try some of this? Mentions setting it up for DSL http://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a008071a8bc.shtml Link to comment Share on other sites More sharing options...
Sheaf Saint Posted 15 January, 2009 Author Share Posted 15 January, 2009 I had a look and tried inputing the IOS command like it says on that page but the router doesn't like the command for some reason. I tried it a few times. This is doing my swede in now, I've been messing about with this for the best part of two days!!!!!! Link to comment Share on other sites More sharing options...
Sheaf Saint Posted 15 January, 2009 Author Share Posted 15 January, 2009 Cheers for the assistance anyway Stevo. Link to comment Share on other sites More sharing options...
Saint In Exile Posted 15 January, 2009 Share Posted 15 January, 2009 I had a look and tried inputing the IOS command like it says on that page but the router doesn't like the command for some reason. I tried it a few times. This is doing my swede in now, I've been messing about with this for the best part of two days!!!!!! Which command is it failing on?? The process in the link provided is correct but you need to replace at step 6 with 0/38. Do you want the router to also act as a DHCP server for your local network? If so, then you need to complete the optional setup at step 8 as well. I take it you know what IP range you're wanting to use for any local lan and what IP address you want to allocate to the local lan ethernet interface on the router? Link to comment Share on other sites More sharing options...
Sheaf Saint Posted 15 January, 2009 Author Share Posted 15 January, 2009 Which command is it failing on?? The process in the link provided is correct but you need to replace at step 6 with 0/38. Do you want the router to also act as a DHCP server for your local network? If so, then you need to complete the optional setup at step 8 as well. I take it you know what IP range you're wanting to use for any local lan and what IP address you want to allocate to the local lan ethernet interface on the router? Yeah I've done all that. It's set up as a dhcp server and kicking out IP adresses to the LAN clients OK. I've set the pvc values (0/38) and that's showing OK. It just doesn't let me add the default route, or it does but when I run the connection test using the SDM software it falls down at the 'checking exit interface' stage which means it doesn't have a default route to send the external traffic to. I've checked with Plusnet and they tell me that they have 5 different servers that I could connect to each time I log in so it's not possible for them to provide me with a 'next hop' IP address. Link to comment Share on other sites More sharing options...
Saint In Exile Posted 15 January, 2009 Share Posted 15 January, 2009 Yeah I've done all that. It's set up as a dhcp server and kicking out IP adresses to the LAN clients OK. I've set the pvc values (0/38) and that's showing OK. It just doesn't let me add the default route, or it does but when I run the connection test using the SDM software it falls down at the 'checking exit interface' stage which means it doesn't have a default route to send the external traffic to. I've checked with Plusnet and they tell me that they have 5 different servers that I could connect to each time I log in so it's not possible for them to provide me with a 'next hop' IP address. Do they require you to connect with a username and password? Link to comment Share on other sites More sharing options...
Sheaf Saint Posted 15 January, 2009 Author Share Posted 15 January, 2009 Do they require you to connect with a username and password? Yes Link to comment Share on other sites More sharing options...
Saint In Exile Posted 15 January, 2009 Share Posted 15 January, 2009 Yes Give this config a go... Just change the bits between the <..> to the correct values for your setup. no service pad service tcp-keepalives-in service tcp-keepalives-out service timestamps debug datetime msec localtime show-timezone service timestamps log datetime msec localtime show-timezone service password-encryption service sequence-numbers ! hostname ! boot-start-marker boot-end-marker ! logging buffered 16256 debugging logging rate-limit 15 enable secret ! clock timezone GMT 0 clock summer-time BST recurring 3 Sat Mar 1:00 last Sun Oct 2:00 no aaa new-model ! ! ip subnet-zero no ip source-route ip cef ! ! ! ! no ip bootp server ! ! interface ATM0/0 no ip address no ip redirects no ip unreachables no ip proxy-arp no ip mroute-cache no atm ilmi-keepalive dsl operating-mode auto pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 1 ! ! ! interface FastEthernet0/0 description LAN ip address speed 100 full-duplex ip nat inside ! interface Dialer1 ip address no ip redirects no ip unreachables no ip proxy-arp ip nat outside encapsulation ppp dialer pool 1 dialer idle-timeout 0 no cdp enable ppp chap hostname ppp chap password ppp pap sent-username password ppp ipcp dns request ppp ipcp route default ppp ipcp address accept ! ! ! ip nat inside source list 1 interface Dialer1 overload no ip http server no ip http secure-server ip classless ! ip route 0.0.0.0 0.0.0.0 Dialer1 ! ! ! access-list 1 permit ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end Link to comment Share on other sites More sharing options...
Sheaf Saint Posted 16 January, 2009 Author Share Posted 16 January, 2009 Thanks for the help so far guys, it's been very vaulable. Right, I've made a bit of progress but I'm still a bit stumped. The router is by all accounts connecting to the ISP OK. The connection tests on the SDM tool are passing as successful and using hyperterminal I can ping the DNS server OK, but that's it. Neither of the PCs on the ethernet are able to connect to the outside world even though they are both connected to the router and receiveing an IP address over DHCP. If I try running a tracert on the IP address of the DNS server from my PC, it only gets as far as the router so there is obviously a problem somewhere between the ethernet and the exit interface on the router. Anybody got any ideas? Link to comment Share on other sites More sharing options...
Saint In Exile Posted 16 January, 2009 Share Posted 16 January, 2009 Thanks for the help so far guys, it's been very vaulable. Right, I've made a bit of progress but I'm still a bit stumped. The router is by all accounts connecting to the ISP OK. The connection tests on the SDM tool are passing as successful and using hyperterminal I can ping the DNS server OK, but that's it. Neither of the PCs on the ethernet are able to connect to the outside world even though they are both connected to the router and receiveing an IP address over DHCP. If I try running a tracert on the IP address of the DNS server from my PC, it only gets as far as the router so there is obviously a problem somewhere between the ethernet and the exit interface on the router. Anybody got any ideas? Sounds like a routing problem... Have you checked that the default route is correct? If that looks ok, can you ping and traceroute to 216.239.59.103 (http://www.google.co.uk) from the router? Link to comment Share on other sites More sharing options...
Sheaf Saint Posted 16 January, 2009 Author Share Posted 16 January, 2009 Sounds like a routing problem... Have you checked that the default route is correct? If that looks ok, can you ping and traceroute to 216.239.59.103 (http://www.google.co.uk) from the router? YAY! I've sussed it now! I didn't realise that I had to create a NAT rule to associate the ethernet with the Dialer1 interface but I've done that now and it's working. Thank fook for that, I've been tearing my hair out over the last two days with this. Thanks for your help mate, that config that you posted really helped. Link to comment Share on other sites More sharing options...
Saint In Exile Posted 16 January, 2009 Share Posted 16 January, 2009 YAY! I've sussed it now! I didn't realise that I had to create a NAT rule to associate the ethernet with the Dialer1 interface but I've done that now and it's working. Thank fook for that, I've been tearing my hair out over the last two days with this. Thanks for your help mate, that config that you posted really helped. No worries... Glad it's sorted!! Link to comment Share on other sites More sharing options...
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