Re: DHCP IP Address Negotiated...

From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Oct 15 2004 - 18:28:58 GMT-3


Hey Art,

I think you're misusing the no peer default ip address command on R5. See
command reference:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/dial_r/dia_n1g.htm#wp1118789

I think you want to use the command, "peer default ip address dhcp"

From the debug output from R5, it's saying "No peer address configured".
I'm not 100% sure using the above command will work, but I am 100% sure that
the "no peer default ip address" is causing this problem.

> *Mar 1 14:08:51.444: BR0/0:2 IPCP: I CONFREQ [REQsent] id 1 len 10
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: Address 0.0.0.0 (0x030600000000)
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: No peer address configured
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: Neither side knows remote address
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: O CONFREJ [REQsent] id 1 len 10
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: Address 0.0.0.0 (0x030600000000)

HTH, Tim

----- Original Message -----
From: "Art Lee" <bahia111@comcast.net>
To: <ccielab@groupstudy.com>
Sent: Friday, October 15, 2004 5:06 PM
Subject: DHCP IP Address Negotiated...

> Hello Gurus,
>
> I have two back-to back routers (R4-peer & R5-dhcp server) connected
> across ISDN (dialers). Cannot get the DHCP server to assign 1 address to
> the peer. Here are my configs for R4 & R5 & the debug ppp negotiation
> from R5:
>
> R4
>
> hostname Rack1R4
> !
> logging queue-limit 100
> enable password cisco
> !
> username all
> memory-size iomem 15
> ip subnet-zero
> !
> !
> no ip domain lookup
> !
> ip audit notify log
> ip audit po max-events 100
> mpls ldp logging neighbor-changes
> !
> !
> !
> isdn switch-type basic-ni
> !
> !
> !
> !
> !
> !
> !
> !
> !
> no voice hpi capture buffer
> no voice hpi capture destination
> !
> !
> mta receive maximum-recipients 0
> !
> !
> !
> !
> interface Loopback0
> ip address 150.1.4.4 255.255.255.0
> !
> interface Ethernet0/0
> ip address 204.12.1.4 255.255.255.0
> half-duplex
> !
> interface Serial0/0
> no ip address
> encapsulation frame-relay IETF
> shutdown
> frame-relay lmi-type cisco
> !
> interface BRI0/0
> no ip address
> encapsulation ppp
> dialer pool-member 1
> isdn switch-type basic-ni
> isdn spid1 0555100001 5551000
> !
> interface Ethernet0/1
> ip address 139.1.48.4 255.255.255.0
> half-duplex
> !
> interface Dialer1
> ip address negotiated
> encapsulation ppp
> dialer pool 1
> dialer idle-timeout 300
> dialer string 5552000
> dialer-group 1
> !
> router rip
> version 2
> network 139.1.0.0
> network 150.1.0.0
> no auto-summary
> !
> router bgp 100
> synchronization
> bgp router-id 150.1.4.4
> bgp log-neighbor-changes
> aggregate-address 139.1.0.0 255.255.0.0
> neighbor 150.1.6.6 remote-as 100
> neighbor 150.1.6.6 update-source Loopback0
> neighbor 150.1.6.6 next-hop-self
> neighbor 204.12.1.254 remote-as 54
> neighbor 204.12.1.254 soft-reconfiguration inbound
> no auto-summary
> !
> ip http server
> no ip http secure-server
> ip classless
> ip route 139.1.7.0 255.255.255.0 150.1.5.5
> ip route 150.1.7.0 255.255.255.0 150.1.5.5
> !
> !
> !
> access-list 100 deny udp any any eq rip
> access-list 100 permit ip any any
> dialer-list 1 protocol ip list 100
> !
> !
> call rsvp-sync
>
>
>
> R5
>
> hostname Rack1R5
> !
> logging queue-limit 100
> enable password cisco
> !
> memory-size iomem 15
> ip subnet-zero
> !
> !
> no ip domain lookup
> ip dhcp excluded-address 139.1.45.0 139.1.45.3
> ip dhcp excluded-address 139.1.45.5 139.1.45.255
> !
> ip dhcp pool FOR_R4
> network 139.1.45.0 255.255.255.0
> default-router 139.1.45.5
> !
> ip multicast-routing
> ip audit notify log
> ip audit po max-events 100
> mpls ldp logging neighbor-changes
> !
> !
> !
> isdn switch-type basic-ni
> !
> !
> !
> !
> !
> !
> !
> !
> !
> no voice hpi capture buffer
> no voice hpi capture destination
> !
> !
> mta receive maximum-recipients 0
> !
> !
> !
> !
> interface Loopback0
> ip address 150.1.5.5 255.255.255.0
> !
> interface Ethernet0/0
> ip address 139.6.5.5 255.255.255.0
> half-duplex
> !
> interface Serial0/0
> no ip address
> encapsulation frame-relay
> no fair-queue
> no frame-relay inverse-arp
> frame-relay lmi-type cisco
> !
> interface Serial0/0.501 multipoint
> ip address 139.1.15.5 255.255.255.0
> ip router isis
> frame-relay map clns 501 broadcast
> frame-relay map ip 139.1.15.1 501 broadcast
> !
> interface Serial0/0.502 multipoint
> ip address 139.1.25.5 255.255.255.0
> ip router isis
> frame-relay map clns 502 broadcast
> frame-relay map ip 139.1.25.2 502 broadcast
> !
> interface BRI0/0
> no ip address
> encapsulation ppp
> dialer pool-member 1
> isdn switch-type basic-ni
> isdn spid1 0555200001 5552000
> !
> interface Ethernet0/1
> ip address 139.1.58.5 255.255.255.0
> half-duplex
> !
> interface Dialer1
> ip address 139.1.45.5 255.255.255.0
> encapsulation ppp
> dialer pool 1
> dialer idle-timeout 300
> dialer string 5551000
> dialer-group 1
> no peer default ip address
> !
> router isis
> net 49.0125.0001.0001.0005.00
> is-type level-1
> redistribute rip level-1
> passive-interface Loopback0
> passive-interface Ethernet0/0
> !
> router rip
> version 2
> redistribute connected
> redistribute isis level-1 metric 1
> network 139.1.0.0
> network 150.1.0.0
> no auto-summary
> !
> ip http server
> no ip http secure-server
> ip classless
> !
> !
> !
> access-list 100 deny udp any any eq rip
> access-list 100 permit ip any any
> dialer-list 1 protocol ip list 100
> !
> !
> call rsvp-sync
>
>
>
> Debug PPP Negotiation from R5 w/ isdn test call int b0/0 5551000
>
> Rack1R5#sh debu
> PPP:
> PPP protocol negotiation debugging is on
> DHCP server packet debugging is on.
> DHCP server event debugging is on.
>
>
>
> Rack1R5#
> *Mar 1 14:08:13.624: DHCPD: checking for expired leases.
> Rack1R5#isdn test call int b0/0 5551000
> Rack1R5#
> *Mar 1 14:08:28.616: %LINK-3-UPDOWN: Interface BRI0/0:1, changed state
> to up
> *Mar 1 14:08:28.620: BR0/0:1 PPP: Using dialer call direction
> *Mar 1 14:08:28.620: BR0/0:1 PPP: Treating connection as a callout
> *Mar 1 14:08:28.620: BR0/0:1 PPP: Phase is ESTABLISHING, Active Open
> *Mar 1 14:08:28.624: BR0/0:1 PPP: No remote authentication for call-out
> *Mar 1 14:08:28.624: BR0/0:1 LCP: O CONFREQ [Closed] id 32 len 10
> *Mar 1 14:08:28.624: BR0/0:1 LCP: MagicNumber 0x1384994A
> (0x05061384994A)
> *Mar 1 14:08:28.632: BR0/0:1 LCP: I CONFREQ [REQsent] id 21 len 10
> *Mar 1 14:08:28.632: BR0/0:1 LCP: MagicNumber 0x095C3516
> (0x0506095C3516)
> *Mar 1 14:08:28.632: BR0/0:1 LCP: O CONFACK [REQsent] id 21 len 10
> *Mar 1 14:08:28.632: BR0/0:1 LCP: MagicNumber 0x095C3516
> (0x0506095C3516)
> *Mar 1 14:08:28.636: BR0/0:1 LCP: I CONFACK [ACKsent] id 32 len 10
> *Mar 1 14:08:28.636: BR0/0:1 LCP: MagicNumber 0x1384994A
> (0x05061384994A)
> Rack1R5#14:08:28.636: BR0/0:1 LCP: State is Open
> *Mar 1 14:08:28.636: BR0/0:1 PPP: Phase is FORWARDING, Attempting Forward
> *Mar 1 14:08:28.636: BR0/0:1 PPP: Phase is ESTABLISHING, Finish LCP
> *Mar 1 14:08:28.636: BR0/0:1 PPP: Phase is UP
> *Mar 1 14:08:28.640: BR0/0:1 CDPCP: O CONFREQ [Closed] id 1 len 4
> *Mar 1 14:08:28.640: BR0/0:1 PPP: Process pending packets
> *Mar 1 14:08:28.644: BR0/0:1 IPCP: I CONFREQ [Not negotiated] id 1 len 10
> *Mar 1 14:08:28.644: BR0/0:1 IPCP: Address 0.0.0.0 (0x030600000000)
> *Mar 1 14:08:28.644: BR0/0:1 LCP: O PROTREJ [Open] id 33 len 16
> protocol IPCP (0x80210101000A030600000000)
> *Mar 1 14:08:28.648: BR0/0:1 CDPCP: I CONFREQ [REQsent] id 1 len 4
> *Mar 1 14:08:28.648: BR0/0:1 CDPCP: O CONFACK [REQsent] id 1 len 4
> *Mar 1 14:08:28.648: BR0/0:1 CDPCP: I CONFACK [ACKsent] id 1 len 4
> *Mar 1 14:08:28.648: BR0/0:1 CDPCP: State is Open
> Rack1R5#
> *Mar 1 14:08:29.636: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> BRI0/0:1, changed state to up
> Rack1R5#
> *Mar 1 14:08:34.620: %ISDN-6-CONNECT: Interface BRI0/0:1 is now
> connected to 5551000
> Rack1R5#ping 139.1.45.4
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 139.1.45.4, timeout is 2 seconds:
>
> *Mar 1 14:08:51.416: %LINK-3-UPDOWN: Interface BRI0/0:2, changed state
> to up
> *Mar 1 14:08:51.416: %DIALER-6-BIND: Interface BR0/0:2 bound to profile
Di1
> *Mar 1 14:08:51.420: BR0/0:2 PPP: Using dialer call direction
> *Mar 1 14:08:51.420: BR0/0:2 PPP: Treating connection as a callout
> *Mar 1 14:08:51.420: BR0/0:2 PPP: Phase is ESTABLISHING, Active Open
> *Mar 1 14:08:51.420: BR0/0:2 PPP: No remote authentication for call-out
> *Mar 1 14:08:51.420: BR0/0:2 LCP: O CONFREQ [Closed] id 3 len 10
> *Mar 1 14:08:51.420: BR0/0:2 LCP: MagicNumber 0x1384F25B
> (0x05061384F25B)
> *Mar 1 14:08:51.428: BR0/0:2 LCP: I CONFREQ [REQsent] id 3 len 10
> *Mar 1 14:08:51.432: BR0/0:2 LCP: MagicNumber 0x095C8E27
> (0x0506095C8E27)
> *Mar 1 14:08:51.432: BR0/0:2 LCP: O CONFACK [REQsent] id 3 len 10
> *Mar 1 14:08:51.432: BR0/0:2 LCP: MagicNumber 0x095C8E27
> (0x0506095C8E27)
> *Mar 1 14:08:51.432: BR0/0:2 LCP: I CONFACK [ACKsent] id 3 len 10
> *Mar 1 14:08:51.432: BR0/0:2 LCP: MagicNumber 0x13.U84F25B
> (0x05061384F25B)
> *Mar 1 14:08:51.432: BR0/0:2 LCP: State is Open
> *Mar 1 14:08:51.432: BR0/0:2 PPP: Phase is FORWARDING, Attempting Forward
> *Mar 1 14:08:51.436: BR0/0:2 PPP: Phase is ESTABLISHING, Finish LCP
> *Mar 1 14:08:51.436: BR0/0:2 PPP: Phase is UP
> *Mar 1 14:08:51.436: BR0/0:2 IPCP: O CONFREQ [Closed] id 1 len 10
> *Mar 1 14:08:51.436: BR0/0:2 IPCP: Address 139.1.45.5 (0x03068B012D05)
> *Mar 1 14:08:51.436: BR0/0:2 CDPCP: O CONFREQ [Closed] id 1 len 4
> *Mar 1 14:08:51.436: BR0/0:2 PPP: Process pending packets
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: I CONFREQ [REQsent] id 1 len 10
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: Address 0.0.0.0 (0x030600000000)
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: No peer address configured
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: Neither side knows remote address
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: O CONFREJ [REQsent] id 1 len 10
> *Mar 1 14:08:51.444: BR0/0:2 IPCP: Address 0.0.0.0 (0x030600000000)
> *Mar 1 14:08:51.444: BR0/0:2 CDPCP: I CONFREQ [REQsent] id 1 len 4
> *Mar 1 14:08:51.444: BR0/0:2 CDPCP: O CONFACK [REQsent] id 1 len 4
> *Mar 1 14:08:51.448: BR0/0:2 IPCP: I CONFACK [REQsent] id 1 len 10
> *Mar 1 14:08:51.448: BR0/0:2 IPCP: Address 139.1.45.5 (0x03068B012D05)
> *Mar 1 14:08:51.448: BR0/0:2 CDPCP: I CONFACK [ACKsent] id 1 len 4
> *Mar 1 14:08:51.448: BR0/0:2 CDPCP: State is Open
> *Mar 1 14:08:51.452: BR0/0:2 IPCP: I CONFREQ [ACKrcvd] id 2 len 4
> *Mar 1 14:08:51.452: BR0/0:2 IPCP: O CONFACK [ACKrcvd] id 2 len 4
> *Mar 1 14:08:51.452: BR0/0:2 IPCP: State is Open
> *Mar 1 14:08:52.436: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> BRI0/0:2, changed state to up.U.
> Success rate is 0 percent (0/5)
> Rack1R5#
> *Mar 1 14:08:57.416: %ISDN-6-CONNECT: Interface BRI0/0:2 is now
> connected to 5551000
> Rack1R5#ping 139.1.45.4
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 139.1.45.4, timeout is 2 seconds:
> .....
> Success rate is 0 percent (0/5)
>
>
> As you can see R4 is sending the request for IPCP address to R5, but R5
> is acting like it isn't a server (No DHCPOFFER pacs to R4). What could
> this be???
>
> --
> ***********************
> Art Lee
> bahia111@comcast.net
> Digital Pixels
>
> _______________________________________________________________________
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