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Cisco 837 ADSL Router & subnet mask

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Cisco 837 ADSL Router & subnet mask

Hello -

I am using a Cisco 837 for my ADSL connection (8 static IPs). My problem is that whilst the connection negotiates the router IP address correctly, the subnet mask request is rejects (it appears to me). I *can* set address/mask manually, but I'd rather not.

Relevant part of the config is:

interface Dialer1
ip address negotiated
ip access-group 111 in
ip nat outside
ip inspect myfw out
ip audit AUDIT.1 in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname <hostname>@plusdsl.net
ppp chap password 7 <pwd>
ppp pap sent-username <username>@plusdsl.net password 7 <passwd>
ppp ipcp dns request
ppp ipcp mask request
!


Relevant debug lines are:

Vi3 PPP: Phase is AUTHENTICATING, by the peer
Vi3 CHAP: I CHALLENGE id 8 len 28 from "PTH-AG2"
Vi3 CHAP: Using hostname from interface CHAP
Vi3 CHAP: Using password from interface CHAP
Vi3 CHAP: O RESPONSE id 8 len 43 from <my username>
Vi3 CHAP: I SUCCESS id 8 len 42 msg is "CHAP authentication success, unit 4145"
Vi3 PPP: Phase is FORWARDING, Attempting Forward
Vi3 PPP IPCP: Queue packet code[1] id[230]
Vi3 PPP: Phase is ESTABLISHING, Finish LCP
Vi3 PPP: Phase is UP
Vi3 IPCP: O CONFREQ [Closed] id 20 len 32
Vi3 IPCP: VSO OUI 0x00000C kind 1 (0x000A00000C0100000000)
Vi3 IPCP: Address 0.0.0.0 (0x030600000000)
Vi3 IPCP: PrimaryDNS 0.0.0.0 (0x810600000000)
Vi3 IPCP: SecondaryDNS 0.0.0.0 (0x830600000000)
Vi3 CDPCP: O CONFREQ [Closed] id 6 len 4
Vi3 PPP: Process pending packets
Vi3 IPCP: Redirect packet to Vi3
Vi3 IPCP: I CONFREQ [REQsent] id 230 len 10
Vi3 IPCP: Address 195.166.128.6 (0x0306C3A68006)
Vi3 IPCP: O CONFACK [REQsent] id 230 len 10
Vi3 IPCP: Address 195.166.128.6 (0x0306C3A68006)
Vi3 IPCP: I CONFREJ [ACKsent] id 20 len 14
Vi3 IPCP: VSO OUI 0x00000C kind 1 (0x000A00000C0100000000)
Vi3 IPCP: O CONFREQ [ACKsent] id 21 len 28
Vi3 IPCP: SubnetMask 0.0.0.0 (0x900600000000)
Vi3 IPCP: Address 0.0.0.0 (0x030600000000)
Vi3 IPCP: PrimaryDNS 0.0.0.0 (0x810600000000)
Vi3 IPCP: SecondaryDNS 0.0.0.0 (0x830600000000)
Vi3 LCP: I PROTREJ [Open] id 220 len 10 protocol CDPCP (0x820701060004)
Vi3 CDPCP: State is Listen
Vi3 IPCP: I CONFREJ [ACKsent] id 21 len 10
Vi3 IPCP: SubnetMask 0.0.0.0 (0x900600000000)
Vi3 IPCP: O CONFREQ [ACKsent] id 22 len 22
Vi3 IPCP: Address 0.0.0.0 (0x030600000000)
Vi3 IPCP: PrimaryDNS 0.0.0.0 (0x810600000000)
Vi3 IPCP: SecondaryDNS 0.0.0.0 (0x830600000000)
Vi3 IPCP: I CONFNAK [ACKsent] id 22 len 22
Vi3 IPCP: Address 81.174.226.33 (0x030651AEE221)
Vi3 IPCP: PrimaryDNS 212.159.13.49 (0x8106D49F0D31)
Vi3 IPCP: SecondaryDNS 212.159.13.50 (0x8306D49F0D32)
Vi3 IPCP: O CONFREQ [ACKsent] id 23 len 22
Vi3 IPCP: Address 81.174.226.33 (0x030651AEE221)
Vi3 IPCP: PrimaryDNS 212.159.13.49 (0x8106D49F0D31)
Vi3 IPCP: SecondaryDNS 212.159.13.50 (0x8306D49F0D32)
Vi3 IPCP: I CONFACK [ACKsent] id 23 len 22
Vi3 IPCP: Address 81.174.226.33 (0x030651AEE221)
Vi3 IPCP: PrimaryDNS 212.159.13.49 (0x8106D49F0D31)
Vi3 IPCP: SecondaryDNS 212.159.13.50 (0x8306D49F0D32)
Vi3 IPCP: State is Open
Di1 IPCP: Install negotiated IP interface address 81.174.226.33
Di1 IPCP: Install route to 195.166.128.6
Vi3 IPCP: Add link info for cef entry 195.166.128.6
%LINK-3-UPDOWN: Interface Dialer1, changed state to up

What is the problem with the subnet mask request? How can I get this to work? I'm told by the support desk that the subnet mask is negotiated over the ppp link..

Cheers

Pete.

[Moderators note (by Thomas): Enabled BBCode in the post so your colour tags work.]