Cisco 2611 and Cisco 1721 : Why , why , why ?????

Hello,

Again i post about my problem (see below)

I tried with two other IOS : 12.2(16) & 12.2(1a) instead of the
12.3(5.a) because someone told me of a possible bug of my ios version.
The pb is still the same.
Someone else seems to have the same pb as me with a cisco 1721 with an
ethernet wic card.

Anybody can help ?
Thanks
Sam


A cisco 2611 is connected to the Internet on interface Ethernet0/1
with an ethernet ADSL modem.
When you turn on the cisco, after his boot initialization, it get his
ip address.
But the ISP change the Internet address every two or three days, but
the Cisco doesn't detect the new IP address send by the new ISP
DHCP/Gateway.
I must shut / no shut the ethernet0/1 interface and the it take the
new address.
The ISP have IP address sometimes in range 62.147.x.y , sometimes
82.252.X.Y,etc... , but the Gateway (which is too the DHCP server for
this subnet) is always 62.147.X.254 or 82.252.X.254 or etc .....

What's wrong in my configuration below ?
I paste examples (after config file) of :
- show dhcp lease
- dhcp debug details

Thanks a lot for your help !!

Here is the configuration
*****
toto.free.fr#show run
Building configuration...

Current configuration : 3494 bytes
!
! Last configuration change at 18:26:10 PCTime Sun Apr 17 2005
! NVRAM config last updated at 18:29:19 PCTime Sun Apr 17 2005
!
version 12.3
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname toto.free.fr
!
boot-start-marker
boot-end-marker
!
enable password 7 xxxxxxx
!
clock timezone PCTime 1
clock summer-time PCTime date Mar 30 2003 2:00 Oct 26 2003 3:00
no aaa new-model
ip dhcp-client network-discovery informs 2 discovers 2 period 15
ip subnet-zero
no ip source-route
ip cef
!
!
no ip domain lookup
ip dhcp excluded-address 192.168.0.1 192.168.0.200
ip dhcp excluded-address 192.168.0.210 192.168.0.254
!
ip dhcp pool wifi
host 192.168.0.250 255.255.255.0
client-identifier 0100.4005.d042.b8
!
ip dhcp pool 1
network 192.168.0.0 255.255.255.0
default-router 192.168.0.244
dns-server 212.27.32.177 194.149.160.9
!
no ip bootp server
ip audit notify log
ip audit po max-events 100
no ftp-server write-enable
!
!
!
!
interface Null0
no ip unreachables
!
interface Ethernet0/0
description connected to EthernetLAN
ip address 192.168.0.244 255.255.255.0
ip access-group 100 in
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
half-duplex
!
interface Ethernet0/1
description connected to Internet
ip address dhcp
ip access-group 103 in
no ip proxy-arp
ip nat outside
half-duplex
no cdp enable
!
****I removed this part*****
router rip
version 1
passive-interface Ethernet0/1
network 192.168.0.0
no auto-summary
**************************
!
ip nat inside source list 1 interface Ethernet0/1 overload
ip nat inside source static udp 192.168.0.10 5555 interface
Ethernet0/1 5555
ip nat inside source static tcp 192.168.0.10 5555 interface
Ethernet0/1 5555
ip nat inside source static udp 192.168.0.10 6666 interface
Ethernet0/1 6666
ip nat inside source static tcp 192.168.0.10 6666 interface
Ethernet0/1 6666
no ip http server
ip classless
!
!
access-list 1 remark Regle NAT genereale
access-list 1 permit 192.168.0.0 0.0.0.255
access-list 100 remark LAN In
access-list 100 permit udp any any eq bootpc
access-list 100 deny ip host 255.255.255.255 any
access-list 100 deny ip 127.0.0.0 0.255.255.255 any
access-list 100 permit ip any any
access-list 103 remark ENTRANT Interface Wan
access-list 103 permit udp any eq bootpc host 192.168.0.244 eq bootpc
access-list 103 deny udp any any eq bootps
access-list 103 deny udp any any eq snmp
access-list 103 deny udp any any eq snmptrap
access-list 103 permit ip any any
snmp-server community public RO 1
snmp-server enable traps tty
banner login ^CAuthorized access only!
Disconnect IMMEDIATELY if you are not an authorized user!
****** Acces reserve - Deconnectez vous immediatement ****!^C
!
line con 0
exec-timeout 0 0
password 7 xxxxxx
login
line aux 0
line vty 0 4
access-class 1 in
password 7 xxxx
login
!
ntp clock-period 17208826
ntp server 195.83.132.135
ntp server 138.195.130.71
ntp server 195.83.66.36
ntp server 207.46.130.100
!
!
end
*********


And for information

toto.free.fr#show dhcp server
DHCP server: ANY (255.255.255.255)
Leases: 423
Offers: 2 Requests: 426 Acks: 423 Naks: 0
Declines: 0 Releases: 3 Bad: 0
DNS0: 213.228.0.212, DNS1: 212.27.32.177
Subnet: 255.255.255.0

toto.free.fr#show dhcp lease
Temp IP addr: 82.252.134.XXX for peer on Interface: Ethernet0/1
Temp sub net mask: 255.255.255.0
DHCP Lease server: 82.252.134.254, state: 3 Bound
DHCP transaction id: 364230A
Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
Temp default-gateway addr: 82.252.134.254
Next timer fires after: 00:00:32
Retry count: 0 Client-ID: cisco-0008.ZZZZ.YYYY-Et0/1
Hostname: toto.free.fr
toto.free.fr#


toto.free.fr#show dhcp lease
Temp IP addr: 82.252.134.xxx for peer on Interface: Ethernet0/1
Temp sub net mask: 255.255.255.0
DHCP Lease server: 82.252.134.254, state: 4 Rebinding
DHCP transaction id: 3D6C09F
Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
Temp default-gateway addr: 82.252.134.254
No timer running
Retry count: 1 Client-ID: 0008.21ea.aa81
Hostname: toto.free.fr


Notice the No timer running that don't understand.
I again do a shut/no shut on the E0/1 interface and now this is the
new show dhcp lease command :
toto.free.fr#show dhcp lease
Temp IP addr: 62.147.217.XXX for peer on Interface: Ethernet0/1
Temp sub net mask: 255.255.255.0
DHCP Lease server: 62.147.217.254, state: 5 Renewing
DHCP transaction id: 8E99607
Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
Temp default-gateway addr: 62.147.217.254
Next timer fires after: 00:07:45
Retry count: 1 Client-ID: 0008.21ea.aa81
Hostname: toto.free.fr
toto.free.fr#

and now there is a Next timer fires after: 00:07:45


toto.free.fr#debug dhcp detail
DHCP client activity debugging is on (detailed)
toto.free.fr#
2d22h: DHCP: QScan: Bound..T1 fired..Renewing
2d22h: DHCP: SRequest attempt # 1 for entry:
2d22h: Temp IP addr: 82.252.138.229 for peer on Interface:
Ethernet0/1
2d22h: Temp sub net mask: 255.255.255.0
2d22h: DHCP Lease server: 82.252.138.254, state: 5 Renewing
2d22h: DHCP transaction id: B0C85C3
2d22h: Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
2d22h: Temp default-gateway addr: 82.252.138.254
2d22h: Next timer fires after: 00:08:59
2d22h: Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
2d22h: Hostname: toto.free.fr
2d22h: DHCP: SRequest - ciaddr: 82.252.138.229
2d22h: DHCP: SRequest placed lease len option: 600
2d22h: DHCP: SRequest: 310 bytes
2d22h: DHCP: SRequest: 310 bytes
2d22h: DHCP: Received a BOOTREP pkt
2d22h: DHCP: Scan: Message type: DHCP Ack
2d22h: DHCP: Scan: Server ID Option: 82.252.138.254 = 52FC8AFE
2d22h: DHCP: Scan: Renewal time: 60
2d22h: DHCP: Scan: Rebind time: 600
2d22h: DHCP: Scan: Lease Time: 600
2d22h: DHCP: Scan: Subnet Address Option: 255.255.255.0
2d22h: DHCP: Scan: Router Option: 82.252.138.254
2d22h: DHCP: Scan: DNS Name Server Option: 213.228.0.212,
212.27.32.177
2d22h: DHCP: rcvd pkt source: 82.252.138.254, destination:
82.252.138.229
2d22h: UDP sport: 43, dport: 44, length: 556
2d22h: DHCP op: 2, htype: 1, hlen: 6, hops: 0
2d22h: DHCP server identifier: 82.252.138.254
2d22h: xid: B0C85C3, secs: 0, flags: 0
2d22h: client: 0.0.0.0, your: 82.252.138.229
2d22h: srvr: 82.252.138.254, gw: 0.0.0.0
2d22h: options block length: 308

2d22h: DHCP Ack Message
2d22h: DHCP: Lease Seconds: 600 Renewal secs: 60 Rebind secs:
600
2d22h: DHCP: Server ID Option: 82.252.138.254
2d22h: DHCP: Applying DHCP options:
2d22h: DHCP: Releasing ipl options:
2d22h: Setting default_gateway to 82.252.138.254
2d22h: Adding DNS server address 213.228.0.212
2d22h: Adding DNS server address 212.27.32.177
2d22h: DHCP Client Pooling: ***Allocated IP address: 82.252.138.229
toto.free.fr#no debug dhcp
DHCP client activity debugging is off
toto.free.fr#

toto.free.fr#show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 62.147.221.83 11 0007.cb09.a2b7 ARPA
Ethernet0/1
Internet 192.168.0.9 9 00e0.4cbc.b3fb ARPA
Ethernet0/0
Internet 62.147.221.254 30 0007.cb09.a2b7 ARPA
Ethernet0/1
Internet 192.168.0.244 - 0008.21ea.aa80 ARPA
Ethernet0/0
Internet 62.147.221.205 - 0008.21ea.aa81 ARPA
Ethernet0/1

(notice that 0007.cb09.a2b7 is Mac address of ethernet ADSL modem
and 0008.21ea.aa81 is Mac Address of the Ethernet0/1


toto.free.fr#traceroute 212.27.32.177

Type escape sequence to abort.
Tracing the route to 212.27.32.177

1 192.168.254.254 36 msec 32 msec 37 msec
2 212.27.37.61 36 msec 36 msec 36 msec
3 212.27.51.81 40 msec 36 msec 36 msec
4 212.27.32.177 36 msec 36 msec 36 msec
toto.free.fr#


toto.free.fr#show ip interface
Ethernet0/0 is up, line protocol is up
Internet address is 192.168.0.244/24
Broadcast address is 255.255.255.255
Address determined by non-volatile memory
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Multicast reserved groups joined: 224.0.0.9
Outgoing access list is not set
Inbound access list is 100
Proxy ARP is disabled
Local Proxy ARP is disabled
Security level is default
Split horizon is enabled
ICMP redirects are never sent
ICMP unreachables are never sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is disabled
IP Flow switching is disabled
IP CEF switching is enabled
IP CEF Feature Fast switching turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast, CEF
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Policy routing is disabled
Network address translation is enabled, interface in domain inside
WCCP Redirect outbound is disabled
WCCP Redirect inbound is disabled
WCCP Redirect exclude is disabled
BGP Policy Mapping is disabled
Ethernet0/1 is up, line protocol is up
Internet address is 62.147.221.205/24
Broadcast address is 255.255.255.255
Address determined by DHCP
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound access list is 103
Proxy ARP is disabled
Local Proxy ARP is disabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is disabled
IP Flow switching is disabled
IP CEF switching is enabled
IP CEF Feature Fast switching turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast, CEF
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Policy routing is disabled
Network address translation is enabled, interface in domain outside
WCCP Redirect outbound is disabled
WCCP Redirect inbound is disabled
WCCP Redirect exclude is disabled
BGP Policy Mapping is disabled
toto.free.fr#
toto.free.fr#show interfaces
Ethernet0/0 is up, line protocol is up
Hardware is AmdP2, address is 0008.21ea.aa80 (bia 0008.21ea.aa80)
Description: connected to EthernetLAN
Internet address is 192.168.0.244/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:06, output 00:00:03, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
4172347 packets input, 1220388978 bytes, 0 no buffer
Received 53153 broadcasts, 0 runts, 0 giants, 0 throttles
21 input errors, 0 CRC, 0 frame, 0 overrun, 21 ignored
0 input packets with dribble condition detected
5623482 packets output, 935378313 bytes, 0 underruns
0 output errors, 34856 collisions, 3 interface resets
0 babbles, 0 late collision, 54663 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Ethernet0/1 is up, line protocol is up
Hardware is AmdP2, address is 0008.21ea.aa81 (bia 0008.21ea.aa81)
Description: connected to Internet
Internet address is 62.147.221.205/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:09, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
5642038 packets input, 941936111 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
2 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
4243738 packets output, 1212690519 bytes, 0 underruns
202 output errors, 38583 collisions, 9 interface resets
0 babbles, 0 late collision, 188974 deferred
202 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
toto.free.fr#

Something new to understand my problem.
This morning, i don't have internet because the wan ip change. So i
write with debug dhcp detail mode on
toto.free.fr#conf t
Enter configuration commands, one per line. End with CNTL/Z.
toto.free.fr(config)#ip dhcp-client network-discovery informs 2
discovers 2 period 15

And this is what the Cisco do :

toto.free.fr(config)#
21:30:02: DHCP: DHCP client process started: 12
21:30:03: DHCP: SInform
21:30:03: B'cast on Ethernet0/0 interface from
192.168.0.244
21:30:03: B'cast on Ethernet0/1 interface from
82.252.140.191^Z
toto.free.fr#
21:30:18: DHCP: SInform
21:30:18: B'cast on Ethernet0/0 interface from
192.168.0.244
21:30:18: B'cast on Ethernet0/1 interface from
82.252.140.191
21:30:19: %SYS-5-CONFIG_I: Configured from console by console
21:30:33: DHCP: SInform as discover
21:30:33: B'cast on Ethernet0/0 interface from
192.168.0.244
21:30:33: B'cast on Ethernet0/1 interface from
82.252.140.191
21:30:48: DHCP: SInform as discover
21:30:48: B'cast on Ethernet0/0 interface from
192.168.0.244
21:30:48: B'cast on Ethernet0/1 interface from
82.252.140.191
21:31:03: DHCP: Shutting down from get_netinfo()
21:31:03: DHCP: Attempting to shutdown DHCP Client

And like the others time , i shut / no shut the interface because I
still don't have the connection.... :-(


toto.free.fr#conf t
Enter configuration commands, one per line. End with CNTL/Z.
toto.free.fr(config)#interface ethernet0/1
toto.free.fr(config-if)#shut

21:32:11: DHCP: SRelease attempt # 1 for entry:
21:32:11: Temp IP addr: 82.252.140.191 for peer on Interface:
Ethernet0/1
21:32:11: Temp sub net mask: 255.255.255.0
21:32:11: DHCP Lease server: 82.252.140.254, state: 7 Releasing
21:32:11: DHCP transaction id: 2289
21:32:11: Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
21:32:11: Temp default-gateway addr: 82.252.140.254
21:32:11: Next timer fires after: 00:00:00
21:32:11: Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
21:32:11: Hostname: toto.free.fr
21:32:11: DHCP: SRelease placed Server ID option: 82.252.140.254
21:32:11: DHCP: SRelease: 279 bytes
21:32:11: DHCP: SRelease attempt # 2 for entry:
21:32:11: Temp IP addr: 82.252.140.191 for peer on Interface:
Ethernet0/1
21:32:11: Temp sub net mask: 255.255.255.0
21:32:11: DHCP Lease server: 82.252.140.254, state: 7 Releasing
21:32:11: DHCP transaction id: 2289
21:32:11: Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
21:32:11: Temp default-gateway addr: 82.252.140.254
21:32:11: Next timer fires after: 00:00:00
21:32:11: Retry count: 2 Client-ID: cisco-0008.21ea.aa81-Et0/1
21:32:11: Hostname: toto.free.fr
21:32:11: DHCP: SRelease placed Server ID option: 82.252.140.254
21:32:11: DHCP: SRelease: 279 bytes
21:32:11: DHCP: Releasing ipl options:
21:32:11: Clearing default gateway and route to 82.252.140.254
21:32:11: Clearing DNS address 213.228.0.212
21:32:11: Clearing DNS address 212.27.32.177
21:32:12: DHCP: SRelease attempt # 3 for entry:
21:32:12: Temp IP addr: 82.252.140.191 for peer on Interface:
Ethernet0/1
21:32:12: Temp sub net mask: 255.255.255.0
21:32:12: DHCP Lease server: 82.252.140.254, state: 7 Releasing
21:32:12: DHCP transaction id: 2289
21:32:12: Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
21:32:12: Next timer fires after:
toto.free.fr(config-if)# 00:00:01
21:32:12: Retry count: 3 Client-ID: cisco-0008.21ea.aa81-Et0/1
21:32:12: Hostname: toto.free.fr
21:32:12: DHCP: SRelease placed Server ID option: 82.252.140.254
21:32:12: DHCP: SRelease: 279 bytes
21:32:13: RAC: DHCP stopped on interface Ethernet0/1
21:32:15: %LINK-5-CHANGED: Interface Ethernet0/1, changed state to
administratively down
21:32:16: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/1,
changed state to down
toto.free.fr(config-if)#no shut
toto.free.fr(config-if)#
21:32:29: DHCP: DHCP client process started: 10
21:32:29: RAC: Starting DHCP discover on Ethernet0/1
21:32:29: DHCP: Try 1 to acquire address for Ethernet0/1
21:32:29: DHCP: allocate request
21:32:29: DHCP: zapping entry in DHC_PURGING state for Et0/1
21:32:29: DHCP: new entry. add to queue
21:32:29: DHCP: SDiscover attempt # 1 for entry:
21:32:29: Temp IP addr: 0.0.0.0 for peer on Interface: Ethernet0/1
21:32:29: Temp sub net mask: 0.0.0.0
21:32:29: DHCP Lease server: 0.0.0.0, state: 1 Selecting
21:32:29: DHCP transaction id: 475
21:32:29: Lease: 0 secs, Renewal: 0 secs, Rebind: 0 secs
21:32:29: Next timer fires after: 00:00:02
21:32:29: Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
21:32:29: Hostname: toto.free.fr
21:32:29: DHCP: SDiscover: sending 304 byte length DHCP packet
21:32:29: DHCP: SDiscover 304 bytes
21:32:29: B'cast on Ethernet0/1 interface from 0.0.0.0
21:32:29: DHCP: Received a BOOTREP pkt
21:32:29: DHCP: Scan: Message type: DHCP Offer
21:32:29: DHCP: Scan: Server ID Option: 82.252.145.254 = 52FC91FE
21:32:29: DHCP: Scan: Renewal time: 60
21:32:29: DHCP: Scan: Rebind time: 600
21:32:29: DHCP: Scan: Lease Time: 600
21:32:29: DHCP: Scan: Subnet Address Option: 255.255.255.0
21:32:29: DHCP: Scan: Router Option: 82.252.145.254
21:32:29: DHCP: Scan: DNS Name Server Option: 213.228.0.212,
212.27.32.177
21:32:29: DHCP: rcvd pkt source: 82.252.145.254, destination:
255.255.255.255
21:32:29: UDP sport: 43, dport: 44, length: 556
21:32:29: DHCP op: 2, htype: 1, hlen: 6, hops: 0
21:32:29: DHCP server identifier: 82.252.145.254
21:32:29: xid: 475, secs: 0, flags: 0
21:32:29: client: 0.0.0.0, your: 82.252.145.104
21:32:29: srvr: 82.252.145.254, gw: 0.0.0.0
21:32:29: options block length: 308

21:32:29: DHCP Offer Message Offered AInterface Ethernet0/1 assigned
DHCP address 82.252.145.104, mask 255.255.255.0
ddress: 82.252.145.104
21:32:29: DHCP: Lease Seconds: 600 Renewal secs: 60 Rebind
secs: 600
21:32:29: DHCP: Server ID Option: 82.252.145.254
21:32:29: DHCP: offer received from 82.252.145.254
21:32:29: DHCP: SRequest attempt # 1 for entry:
21:32:29: Temp IP addr: 82.252.145.104 for peer on Interface:
Ethernet0/1
21:32:29: Temp sub net mask: 255.255.255.0
21:32:29: DHCP Lease server: 82.252.145.254, state: 2 Requesting
21:32:29: DHCP transaction id: 475
21:32:29: Lease: 600 secs, Renewal: 0 secs, Rebind: 0 secs
21:32:29: Next timer fires after: 00:00:01
21:32:29: Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
21:32:29: Hostname: toto.free.fr
21:32:29: DHCP: SRequest- Server ID option: 82.252.145.254
21:32:29: DHCP: SRequest- Requested IP addr option: 82.252.145.104
21:32:29: DHCP: SRequest placed lease len option: 600
21:32:29: DHCP: SRequest: 322 bytes
21:32:29: DHCP: SRequest: 322 bytes
21:32:29: B'cast on Ethernet0/1 interface from 0.0.0.0
21:32:29: DHCP: Received a BOOTREP pkt
21:32:29: DHCP: Scan: Message type: DHCP Ack
21:32:29: DHCP: Scan: Server ID Option: 82.252.145.254 = 52FC91FE
21:32:29: DHCP: Scan: Renewal time: 60
21:32:29: DHCP: Scan: Rebind time: 600
21:32:29: DHCP: Scan: Lease Time: 600
21:32:29: DHCP: Scan: Subnet Address Option: 255.255.255.0
21:32:29: DHCP: Scan: Router Option: 82.252.145.254
21:32:29: DHCP: Scan: DNS Name Server Option: 213.228.0.212,
212.27.32.177
21:32:29: DHCP: rcvd pkt source: 82.252.145.254, destination:
255.255.255.255
21:32:29: UDP sport: 43, dport: 44, length: 556
21:32:29: DHCP op: 2, htype: 1, hlen: 6, hops: 0
21:32:29: DHCP server identifier: 82.252.145.254
21:32:29: xid: 475, secs: 0, flags: 0
21:32:29: client: 0.0.0.0, your: 82.252.145.104
21:32:29: srvr: 82.252.145.254, gw: 0.0.0.0
21:32:29: options block length: 308

21:32:29: DHCP Ack Message
21:32:29: DHCP: Lease Seconds: 600 Renewal secs: 60 Rebind
secs: 600
21:32:29: DHCP: Server ID Option: 82.252.145.254
21:32:31: %LINK-3-UPDOWN: Interface Ethernet0/1, changed state to up
21:32:32: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/1,
changed state to up
21:32:32: DHCP Client Pooling: ***Allocated IP address: 82.252.145.104
21:32:32: Allocated IP address = 82.252.145.104 255.255.255.0
^Z
toto.free.fr#
21:32:42: %SYS-5-CONFIG_I: Configured from console by console
21:32:43: DHCP: QScan: Purging entry
21:32:43: DHCP: deleting entry 81067950 82.252.140.191 from list
21:32:43: Temp IP addr: 82.252.140.191 for peer on Interface: unknown
21:32:43: Temp sub net mask: 255.255.255.0
21:32:43: DHCP Lease server: 82.252.140.254, state: 8 Purging
21:32:43: DHCP transaction id: 2289
21:32:43: Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
21:32:43: No timer running
21:32:43: Retry count: 0 Client-ID:
21:32:43: Hostname: toto.free.fr
toto.free.fr#show ip interface brief
Interface IP-Address OK? Method Status
Protocol
Ethernet0/0 192.168.0.244 YES NVRAM up
up
Ethernet0/1 82.252.145.104 YES DHCP up
up
toto.free.fr#
21:33:32: DHCP: QScan: Bound..T1 fired..Renewing
21:33:32: DHCP: SRequest attempt # 1 for entry:
21:33:32: Temp IP addr: 82.252.145.104 for peer on Interface:
Ethernet0/1
21:33:32: Temp sub net mask: 255.255.255.0
21:33:32: DHCP Lease server: 82.252.145.254, state: 5 Renewing
21:33:32: DHCP transaction id: 475
21:33:32: Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
21:33:32: Temp default-gateway addr: 82.252.145.254
21:33:32: Next timer fires after: 00:08:59
21:33:32: Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
21:33:32: Hostname: toto.free.fr
21:33:32: DHCP: SRequest - ciaddr: 82.252.145.104
21:33:32: DHCP: SRequest placed lease len option: 600
21:33:32: DHCP: SRequest: 310 bytes
21:33:32: DHCP: SRequest: 310 bytes
21:33:32: DHCP: Received a BOOTREP pkt
21:33:32: DHCP: Scan: Message type: DHCP Ack
21:33:32: DHCP: Scan: Server ID Option: 82.252.145.254 = 52FC91FE
21:33:32: DHCP: Scan: Renewal time: 60
21:33:32: DHCP: Scan: Rebind time: 600
21:33:32: DHCP: Scan: Lease Time: 600
21:33:32: DHCP: Scan: Subnet Address Option: 255.255.255.0
21:33:32: DHCP: Scan: Router Option: 82.252.145.254
21:33:32: DHCP: Scan: DNS Name Server Option: 213.228.0.212,
212.27.32.177
21:33:32: DHCP: rcvd pkt source: 82.252.145.254, destination:
82.252.145.104
21:33:32: UDP sport: 43, dport: 44, length: 556
21:33:32: DHCP op: 2, htype: 1, hlen: 6, hops: 0
21:33:32: DHCP server identifier: 82.252.145.254
21:33:32: xid: 475, secs: 0, flags: 0
21:33:32: client: 0.0.0.0, your: 82.252.145.104
21:33:32: srvr: 82.252.145.254, gw: 0.0.0.0
21:33:32: options block length: 308

21:33:32: DHCP Ack Message
21:33:32: DHCP: Lease Seconds: 600 Renewal secs: 60 Rebind
secs: 600
21:33:32: DHCP: Server ID Option: 82.252.145.254
21:33:32: DHCP Client Pooling: ***Allocated IP address: 82.252.145.104
toto.free.fr#no debug dhcp
DHCP client activity debugging is off
toto.free.fr#


Notice that this test is with another version of IOS (Version
12.2(16))
because someone told me that it is possible the 12.3(5a) i used thus
now is perhaps boggus

PLEASE HELP !!!! I'm going mad with this problem !!!
Thanks !


If you need anything else... ask me.

Thanks very much

 

"But the ISP change the Internet address every two or three days, but
the Cisco doesn't detect the new IP address send by the new ISP
DHCP/Gateway.
I must shut / no shut the ethernet0/1 interface and the it take the
new address. "

I am not an expert on DHCP, however I would be surprised
if a DHCP server (your ISP) should be able to
change addresses already assigned to clients.
If you read the RFC and post the relevant sections here
indicating that the behaviour that you are seeing
is correct then I will endevour to assist further.

If this is the case then the problem is with
your ISP and is not a Cisco issue.

As to workarounds, you could write a script
to shut and no shut the interface that you run on a
computer that is attached to the network.

Some new IOS reputedly has some "kron" like
scheduling.

You could connect a clockwork timer to the ethernet cable
that disconnects it and reconnects it as required.

You could get a new ISP.

 

In france, the Internet provider are almost depending of the national
Telecom provider. And for technical reasons, dslams are reseted every
2 or 3 days , and that's why (i think) , for all alternative internet
providers , French people haven't fixe ip address with a standart
adsl subscription.

As you can see in the logs i had posted after my config, i don't have
always the same ip ... Here is example of ip address i have in the
past : 82.252.140.191 , 82.252.145.104 , 62.147.218.233 ,
62.147.221.11 , etc ....
So , can you assist me further ?

I don't think you're right ... It works pretty well with other routers
like bewan , draytek, netgear , dlink , level1 . (I had PERSONNALY
tested for all of these !)
And it seems that some IOS 12.3 have the bug
http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCeh46817&Submit=Search

But i tried with two 12.2 and it is the same... So i search in my ACL
to see if there is an error ... but i don't detect it.

In this situation , it is not very possible to do it (different
windows pc ) and i don't know how to do it in a script.

I don't know how to do it. Can you help me ?

I don't know how to do this ... Can you explain ?

Not possible. There is a duration of commitment of the Adsl
subscription. And even, this is the only ISP in this region of france
that offer free unlimited VoIP .

 

And as you can see , i'am not the same to report the pb :

Subject: DHCP Client problem
Message-ID: <4270bb83$0$2572$>

Thanks for your help
Sam

 

It's obvious from the many, many posts you have submitted on this forum that
you have not been able to solve this problem. I suggest you open a TAC
case. If this is a bug than opening a TAC case is only way it is going to
be resolved, if it's not a bug, the TAC will certainly be able to help you.

Scott

 

Yes , i'm very suprised that nobody can help me on that problem, and
that it is only with cisco hardware that i have the problem...

In one answer of someone here , i understand that to open a TAC , you
MUST have a support contract with Cisco ... no ? And i don't have it :
this cisco 2611 is a second-hand equipment...

Can someone tell me if my config file seems contain error(s) ?

 

Is this can help my problem ? Can someone explain me ?
in another post i see something like that

interface FastEthernet1/0
description Connected to LAN
no ip address
speed 100
full-duplex
!
interface FastEthernet1/0.1
description Data VLAN
encapsulation dot1Q 1 native
ip address 10.0.0.254 255.255.255.0
ip nat inside
no snmp trap link-status

and i don't really understand.... but if i think like configuration i
had seen with ATM / dialers , i ask myself if there won't be a
solution like that :

interface Ethernet0/1
description Connected to WAN
no ip address
speed 100
full-duplex
!
interface Ethernet0/1.1
description WAN
ip address negotiated (or dhcp ) ???

Can someone explain me and tell me wha t about that ?
Thanks
Sam

 

I get log when there is a renew of the ip address . Below the most
interesting part :
**********
toto.free.fr#show dhcp lease
Temp IP addr: 62.147.213.95 for peer on Interface: Ethernet0/1
Temp sub net mask: 255.255.255.0
DHCP Lease server: 62.147.213.254, state: 5 Renewing
DHCP transaction id: 5AE4
Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
Temp default-gateway addr: 62.147.213.254
Next timer fires after: 00:04:26
Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
Hostname: toto.free.fr
toto.free.fr#
toto.free.fr#
toto.free.fr#
toto.free.fr#
01:12:20: DHCP: QScan: Renewal..T2 fired..Rebinding
01:12:20: DHCP: SRequest attempt # 1 for entry:
01:12:20: Temp IP addr: 62.147.213.95 for peer on Interface:
Ethernet0/1
01:12:20: Temp sub net mask: 255.255.255.0
01:12:20: DHCP Lease server: 62.147.213.254, state: 4 Rebinding
01:12:20: DHCP transaction id: 5AE4
01:12:20: Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
01:12:20: Temp default-gateway addr: 62.147.213.254
01:12:20: No timer running
01:12:20: Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
01:12:20: Hostname: toto.free.fr
01:12:20: DHCP: SRequest - ciaddr: 62.147.213.95
01:12:20: DHCP: SRequest placed lease len option: 600
01:12:20: DHCP: SRequest: 310 bytes
01:12:20: DHCP: SRequest: 310 bytes
01:12:20: DHCP: Received a BOOTREP pkt
01:12:20: DHCP: Scan: Message type: DHCP Nak
01:12:20: DHCP: Scan: Server ID Option: 82.252.136.254 = 52FC88FE
01:12:20: DHCP: rcvd pkt source: 82.252.136.254, destination:
62.147.213.95
01:12:20: UDP sport: 43, dport: 44, length: 556
01:12:20: DHCP op: 2, htype: 1, hlen: 6, hops: 0
01:12:20: DHCP server identifier: 82.252.136.254
01:12:20: xid: 5AE4, secs: 0, flags: 0
01:12:20: client: 0.0.0.0, your: 0.0.0.0
01:12:20: srvr: 0.0.0.0, gw: 0.0.0.0
01:12:20: options block length: 308

01:12:20: DHCP Nak Message
01:12:20: DHCP: Server ID Option: 82.252.136.254
01:12:20: DHCP: rcv nak 82.252.136.254 is not our server
62.147.213.254
******************

Notice the end : it seems that it refuse the new dhcp server
How to correct this ????
Thanks
Sam

 

I get log when there is a renew of the ip address . Below the most
interesting part :
**********
toto.free.fr#show dhcp lease
Temp IP addr: 62.147.213.95 for peer on Interface: Ethernet0/1
Temp sub net mask: 255.255.255.0
DHCP Lease server: 62.147.213.254, state: 5 Renewing
DHCP transaction id: 5AE4
Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
Temp default-gateway addr: 62.147.213.254
Next timer fires after: 00:04:26
Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
Hostname: toto.free.fr
toto.free.fr#
toto.free.fr#
toto.free.fr#
toto.free.fr#
01:12:20: DHCP: QScan: Renewal..T2 fired..Rebinding
01:12:20: DHCP: SRequest attempt # 1 for entry:
01:12:20: Temp IP addr: 62.147.213.95 for peer on Interface:
Ethernet0/1
01:12:20: Temp sub net mask: 255.255.255.0
01:12:20: DHCP Lease server: 62.147.213.254, state: 4 Rebinding
01:12:20: DHCP transaction id: 5AE4
01:12:20: Lease: 600 secs, Renewal: 60 secs, Rebind: 600 secs
01:12:20: Temp default-gateway addr: 62.147.213.254
01:12:20: No timer running
01:12:20: Retry count: 1 Client-ID: cisco-0008.21ea.aa81-Et0/1
01:12:20: Hostname: toto.free.fr
01:12:20: DHCP: SRequest - ciaddr: 62.147.213.95
01:12:20: DHCP: SRequest placed lease len option: 600
01:12:20: DHCP: SRequest: 310 bytes
01:12:20: DHCP: SRequest: 310 bytes
01:12:20: DHCP: Received a BOOTREP pkt
01:12:20: DHCP: Scan: Message type: DHCP Nak
01:12:20: DHCP: Scan: Server ID Option: 82.252.136.254 = 52FC88FE
01:12:20: DHCP: rcvd pkt source: 82.252.136.254, destination:
62.147.213.95
01:12:20: UDP sport: 43, dport: 44, length: 556
01:12:20: DHCP op: 2, htype: 1, hlen: 6, hops: 0
01:12:20: DHCP server identifier: 82.252.136.254
01:12:20: xid: 5AE4, secs: 0, flags: 0
01:12:20: client: 0.0.0.0, your: 0.0.0.0
01:12:20: srvr: 0.0.0.0, gw: 0.0.0.0
01:12:20: options block length: 308

01:12:20: DHCP Nak Message
01:12:20: DHCP: Server ID Option: 82.252.136.254
01:12:20: DHCP: rcv nak 82.252.136.254 is not our server
62.147.213.254
******************

Notice the end : it seems that it refuse the new dhcp server
How to correct this ????
Thanks
Sam

 

You can purchase a support contract for all Cisco equipment even if that
equipment is purchase second-hand.

A 1-year support contract can be had for your router for $280 list. This
includes hardware replacement. Sounds like a bargain!

CON-SNT-2611ADSL SMARTNET 8X5XNBD 2611XM ADSL Bundle $280

Scott

 

Thanks for the information ... Where do you find it ? I can't find out
on cisco's site ? (have you a link to give ? ) Because it 's a 2611
NOT a 2611XM that i have....

Have you read the new information i posted about the DHCP Nack message
in the same thread ?
01:12:20: DHCP Nak Message
01:12:20: DHCP: Server ID Option: 82.252.136.254
01:12:20: DHCP: rcv nak 82.252.136.254 is not our server
62.147.213.254



and about a possibility using ethernet0/1.1 in the same thread to ?

Thanks