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dhcp related issue

Hello, I've got two cisco routers (2651xm and 2611xm) connected to home gateway (netgear box). Two cisco routers have been configured for DHCP client. I found the 2611xm couldn't get an IP address, 2651xm was fine.

From the debug details, I found there isn't client-id hex dump in the 2611, but 2651 does have. I'm not sure where the issue is. Please help

2611 debug

Mar  1 00:07:46.035: DHCP: new entry. add to queue

*Mar  1 00:07:46.035: DHCP: SDiscover attempt # 1 for entry:

*Mar  1 00:07:46.035: Temp IP addr: 0.0.0.0  for peer on Interface: FastEthernet0/0

*Mar  1 00:07:46.035: Temp  sub net mask: 0.0.0.0

*Mar  1 00:07:46.035:    DHCP Lease server: 0.0.0.0, state: 1 Selecting

*Mar  1 00:07:46.035:    DHCP transaction id: CFC8

*Mar  1 00:07:46.039:    Lease: 0 secs,  Renewal: 0 secs,  Rebind: 0 secs

*Mar  1 00:07:46.039:    Next timer fires after: 00:00:02

*Mar  1 00:07:46.039:    Retry count: 1  Client-ID: cisco-000b.fd62.9ca0-Fa0/0

*Mar  1 00:07:46.039:    Hostname: Router

*Mar  1 00:07:46.039: DHCP: SDiscover: sending 298 byte length DHCP packet

*Mar  1 00:07:46.039: DHCP: SDiscover 298 bytes

*Mar  1 00:07:46.039:            B'cast on FastEthernet0/0 interface from 0.0.0.0

*Mar  1 00:07:49.036: DHCP: SDiscover attempt # 2 for entry:

*Mar  1 00:07:49.036: Temp IP addr: 0.0.0.0  for peer on Interface: FastEthernet0/0

*Mar  1 00:07:49.036: Temp  sub net mask: 0.0.0.0

*Mar  1 00:07:49.036:    DHCP Lease server: 0.0.0.0, state: 1 Selecting

*Mar  1 00:07:49.036:    DHCP transaction id: CFC8

*Mar  1 00:07:49.036:    Lease: 0 secs,  Renewal: 0 secs,  Rebind: 0 secs

*Mar  1 00:07:49.036:    Next timer fires after: 00:00:03

*Mar  1 00:07:49.036:    Retry count: 2  Client-ID: cisco-000b.fd62.9ca0-Fa0/0

*Mar  1 00:07:49.036:    Hostname: Router

*Mar  1 00:07:49.036: DHCP: SDiscover: sending 298 byte length DHCP packet

*Mar  1 00:07:49.036: DHCP: SDiscover 298 bytes

*Mar  1 00:07:49.040:            B'cast on FastEthernet0/0 interface from 0.0.0.0

*Mar  1 00:07:52.037: DHCP: SDiscover attempt # 3 for entry:

*Mar  1 00:07:52.037: Temp IP addr: 0.0.0.0  for peer on Interface: FastEthernet0/0

*Mar  1 00:07:52.037: Temp  sub net mask: 0.0.0.0

*Mar  1 00:07:52.037:    DHCP Lease server: 0.0.0.0, state: 1 Selecting

*Mar  1 00:07:52.037:    DHCP transaction id: CFC8

*Mar  1 00:07:52.037:    Lease: 0 secs,  Renewal: 0 secs,  Rebind: 0 secs

*Mar  1 00:07:52.037:    Next timer fires after: 00:00:03

*Mar  1 00:07:52.037:    Retry count: 3  Client-ID: cisco-000b.fd62.9ca0-Fa0/0

*Mar  1 00:07:52.037:    Hostname: Router

*Mar  1 00:07:52.037: DHCP: SDiscover: sending 298 byte length DHCP packet

*Mar  1 00:07:52.037: DHCP: SDiscover 298 bytes

*Mar  1 00:07:52.041:            B'cast on FastEthernet0/0 interface from 0.0.0.0

*Mar  1 00:07:55.038: DHCP: QScan: Timed out Selecting state

*Mar  1 00:11:24.846: DHCP: new entry. add to queue, interface FastEthernet0/0
*Mar  1 00:11:24.846: DHCP: SDiscover attempt # 1 for entry:
*Mar  1 00:11:24.850: Temp IP addr: 0.0.0.0  for peer on Interface: FastEthernet0/0
*Mar  1 00:11:24.850: Temp  sub net mask: 0.0.0.0
*Mar  1 00:11:24.850:    DHCP Lease server: 0.0.0.0, state: 3 Selecting
*Mar  1 00:11:24.850:    DHCP transaction id: 1CDE
*Mar  1 00:11:24.850:    Lease: 0 secs,  Renewal: 0 secs,  Rebind: 0 secs
*Mar  1 00:11:24.850:    Next timer fires after: 00:00:04
*Mar  1 00:11:24.850:    Retry count: 1  Client-ID: cisco-000c.305b.ca20-Fa0/0
*Mar  1 00:11:24.850:    Client-ID hex dump: 636973636F2D303030632E333035622E
*Mar  1 00:11:24.854:                        636132302D4661302F30
*Mar  1 00:11:24.854:    Hostname: R9
*Mar  1 00:11:24.854: DHCP: SDiscover: sending 291 byte length DHCP packet
*Mar  1 00:11:24.854: DHCP: SDiscover 291 bytes
*Mar  1 00:11:24.854:            B'cast on FastEthernet0/0 interface from 0.0.0.0
*Mar  1 00:11:24.862: DHCP: Received a BOOTREP pkt
*Mar  1 00:11:24.862: DHCP: Scan: Message type: DHCP Offer
*Mar  1 00:11:24.862: DHCP: Scan: Subnet Address Option: 255.255.255.0
*Mar  1 00:11:24.862: DHCP: Scan: Time Offset: 0
*Mar  1 00:11:24.862: DHCP: Scan: Router Option: 192.168.0.1
*Mar  1 00:11:24.862: DHCP: Scan: Lease Time: 3600
*Mar  1 00:11:24.862: DHCP: Scan: Server ID Option: 192.168.0.1 = C0A80001
*Mar  1 00:11:24.862: DHCP: Scan: DNS Name Server Option: 61.9.134.49, 61.9.133.193
*Mar  1 00:11:24.862: DHCP: rcvd pkt source: 192.168.0.1,  destination:  255.255.255.255
*Mar  1 00:11:24.862:    UDP  sport: 43,  dport: 44,  length: 308
*Mar  1 00:11:24.862:    DHCP op: 2, htype: 1, hlen: 6, hops: 0
*Mar  1 00:11:24.866:    DHCP server identifier: 192.168.0.1
*Mar  1 00:11:24.866:        xid: 1CDE, secs: 0, flags: 8000
*Mar  1 00:11:24.866:        client: 0.0.0.0, your: 192.168.0.9
*Mar  1 00:11:24.866:        srvr:  192.168.0.1, gw: 0.0.0.0
*Mar  1 00:11:24.866:        options block length: 60

*Mar  1 00:11:24.866: DHCP Offer Message  Offered Address: 192.168.0.9
*Mar  1 00:11:24.866: DHCP: Lease Seconds: 3600
*Mar  1 00:11:24.866: DHCP: Server ID Option: 192.168.0.1
*Mar  1 00:11:24.866: DHCP: offer received from 192.168.0.1
*Mar  1 00:11:24.866: DHCP: SRequest attempt # 1 for entry:
*Mar  1 00:11:24.866: Temp IP addr: 192.168.0.9  for peer on Interface: FastEthernet0/0
*Mar  1 00:11:24.866: Temp  sub net mask: 255.255.255.0
*Mar  1 00:11:24.870:    DHCP Lease server: 192.168.0.1, state: 4 Requesting
*Mar  1 00:11:24.870:    DHCP transaction id: 1CDE
*Mar  1 00:11:24.870:    Lease: 3600 secs,  Renewal: 0 secs,  Rebind: 0 secs
*Mar  1 00:11:24.870:    Next timer fires after: 00:00:03
*Mar  1 00:11:24.870:    Retry count: 1  Client-ID: cisco-000c.305b.ca20-Fa0/0
*Mar  1 00:11:24.870:    Client-ID hex dump: 636973636F2D303030632E333035622E
*Mar  1 00:11:24.870:                        636132302D4661302F30
*Mar  1 00:11:24.870:    Hostname: R9
*Mar  1 00:11:24.870: DHCP: SRequest- Server ID option: 192.168.0.1
*Mar  1 00:11:24.874: DHCP: SRequest- Requested IP addr option: 192.168.0.9
*Mar  1 00:11:24.874: DHCP: SRequest placed lease len option: 3600
*Mar  1 00:11:24.874: DHCP: SRequest: 309 bytes
*Mar  1 00:11:24.874: DHCP: SRequest: 309 bytes
*Mar  1 00:11:24.874:            B'cast on FastEthernet0/0 interface from 0.0.0.0
*Mar  1 00:11:25.475: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
*Mar  1 00:11:25.888: DHCP: Received a BOOTREP pkt
*Mar  1 00:11:25.888: DHCP: Scan: Message type: DHCP Ack
*Mar  1 00:11:25.888: DHCP: Scan: Subnet Address Option: 255.255.255.0
*Mar  1 00:11:25.888: DHCP: Scan: Time Offset: 0
*Mar  1 00:11:25.888: DHCP: Scan: Router Option: 192.168.0.1
*Mar  1 00:11:25.888: DHCP: Scan: Lease Time: 3600
*Mar  1 00:11:25.888: DHCP: Scan: Server ID Option: 192.168.0.1 = C0A80001
*Mar  1 00:11:25.888: DHCP: Scan: DNS Name Server Option: 61.9.134.49, 61.9.133.193
*Mar  1 00:11:25.888: DHCP: rcvd pkt source: 192.168.0.1,  destination:  255.255.255.255
*Mar  1 00:11:25.892:    UDP  sport: 43,  dport: 44,  length: 308
*Mar  1 00:11:25.892:    DHCP op: 2, htype: 1, hlen: 6, hops: 0
*Mar  1 00:11:25.892:    DHCP server identifier: 192.168.0.1
*Mar  1 00:11:25.892:        xid: 1CDE, secs: 0, flags: 8000
*Mar  1 00:11:25.892:        client: 0.0.0.0, your: 192.168.0.9
*Mar  1 00:11:25.892:        srvr:  192.168.0.1, gw: 0.0.0.0
*Mar  1 00:11:25.892:        options block length: 60

*Mar  1 00:11:25.892: DHCP Ack Message
*Mar  1 00:11:25.892: DHCP: Lease Seconds: 3600
*Mar  1 00:11:25.892: DHCP: Server ID Option: 192.168.0.1
*Mar  1 00:11:28.909: DHCP: Releasing ipl options:
*Mar  1 00:11:28.909: DHCP: Applying DHCP options:
*Mar  1 00:11:28.909:  Setting default_gateway to 192.168.0.1
*Mar  1 00:11:28.909:  Adding default route 192.168.0.1
*Mar  1 00:11:29.910:  Adding DNS server address 61.9.134.49
*Mar  1 00:11:29.910:  Adding DNS server address 61.9.133.193
*Mar  1 00:11:29.910: DHCP Client Pooling: ***Allocated IP address: 192.168.0.9
*Mar  1 00:11:29.951: Allocated IP address = 192.168.0.9  255.255.255.0

                 

Mar  1 00:07:46.035: DHCP: new entry. add to queue

*Mar  1 00:07:46.035: DHCP: SDiscover attempt # 1 for entry:

*Mar  1 00:07:46.035: Temp IP addr: 0.0.0.0  for peer on Interface: FastEthernet0/0

*Mar  1 00:07:46.035: Temp  sub net mask: 0.0.0.0

*Mar  1 00:07:46.035:    DHCP Lease server: 0.0.0.0, state: 1 Selecting

*Mar  1 00:07:46.035:    DHCP transaction id: CFC8

*Mar  1 00:07:46.039:    Lease: 0 secs,  Renewal: 0 secs,  Rebind: 0 secs

*Mar  1 00:07:46.039:    Next timer fires after: 00:00:02

*Mar  1 00:07:46.039:    Retry count: 1  Client-ID: cisco-000b.fd62.9ca0-Fa0/0

*Mar  1 00:07:46.039:    Hostname: Router

*Mar  1 00:07:46.039: DHCP: SDiscover: sending 298 byte length DHCP packet

*Mar  1 00:07:46.039: DHCP: SDiscover 298 bytes

*Mar  1 00:07:46.039:            B'cast on FastEthernet0/0 interface from 0.0.0.0

*Mar  1 00:07:49.036: DHCP: SDiscover attempt # 2 for entry:

*Mar  1 00:07:49.036: Temp IP addr: 0.0.0.0  for peer on Interface: FastEthernet0/0

*Mar  1 00:07:49.036: Temp  sub net mask: 0.0.0.0

*Mar  1 00:07:49.036:    DHCP Lease server: 0.0.0.0, state: 1 Selecting

*Mar  1 00:07:49.036:    DHCP transaction id: CFC8

*Mar  1 00:07:49.036:    Lease: 0 secs,  Renewal: 0 secs,  Rebind: 0 secs

*Mar  1 00:07:49.036:    Next timer fires after: 00:00:03

*Mar  1 00:07:49.036:    Retry count: 2  Client-ID: cisco-000b.fd62.9ca0-Fa0/0

*Mar  1 00:07:49.036:    Hostname: Router

*Mar  1 00:07:49.036: DHCP: SDiscover: sending 298 byte length DHCP packet

*Mar  1 00:07:49.036: DHCP: SDiscover 298 bytes

*Mar  1 00:07:49.040:            B'cast on FastEthernet0/0 interface from 0.0.0.0

*Mar  1 00:07:52.037: DHCP: SDiscover attempt # 3 for entry:

*Mar  1 00:07:52.037: Temp IP addr: 0.0.0.0  for peer on Interface: FastEthernet0/0

*Mar  1 00:07:52.037: Temp  sub net mask: 0.0.0.0

*Mar  1 00:07:52.037:    DHCP Lease server: 0.0.0.0, state: 1 Selecting

*Mar  1 00:07:52.037:    DHCP transaction id: CFC8

*Mar  1 00:07:52.037:    Lease: 0 secs,  Renewal: 0 secs,  Rebind: 0 secs

*Mar  1 00:07:52.037:    Next timer fires after: 00:00:03

*Mar  1 00:07:52.037:    Retry count: 3  Client-ID: cisco-000b.fd62.9ca0-Fa0/0

*Mar  1 00:07:52.037:    Hostname: Router

*Mar  1 00:07:52.037: DHCP: SDiscover: sending 298 byte length DHCP packet

*Mar  1 00:07:52.037: DHCP: SDiscover 298 bytes

*Mar  1 00:07:52.041:            B'cast on FastEthernet0/0 interface from 0.0.0.0

*Mar  1 00:07:55.038: DHCP: QScan: Timed out Selecting state

2651xm debug

*Mar  1 00:11:24.846: DHCP: new entry. add to queue, interface FastEthernet0/0
*Mar  1 00:11:24.846: DHCP: SDiscover attempt # 1 for entry:
*Mar  1 00:11:24.850: Temp IP addr: 0.0.0.0  for peer on Interface: FastEthernet0/0
*Mar  1 00:11:24.850: Temp  sub net mask: 0.0.0.0
*Mar  1 00:11:24.850:    DHCP Lease server: 0.0.0.0, state: 3 Selecting
*Mar  1 00:11:24.850:    DHCP transaction id: 1CDE
*Mar  1 00:11:24.850:    Lease: 0 secs,  Renewal: 0 secs,  Rebind: 0 secs
*Mar  1 00:11:24.850:    Next timer fires after: 00:00:04
*Mar  1 00:11:24.850:    Retry count: 1  Client-ID: cisco-000c.305b.ca20-Fa0/0
*Mar  1 00:11:24.850:    Client-ID hex dump: 636973636F2D303030632E333035622E
*Mar  1 00:11:24.854:                        636132302D4661302F30
*Mar  1 00:11:24.854:    Hostname: R9
*Mar  1 00:11:24.854: DHCP: SDiscover: sending 291 byte length DHCP packet
*Mar  1 00:11:24.854: DHCP: SDiscover 291 bytes
*Mar  1 00:11:24.854:            B'cast on FastEthernet0/0 interface from 0.0.0.0
*Mar  1 00:11:24.862: DHCP: Received a BOOTREP pkt
*Mar  1 00:11:24.862: DHCP: Scan: Message type: DHCP Offer
*Mar  1 00:11:24.862: DHCP: Scan: Subnet Address Option: 255.255.255.0
*Mar  1 00:11:24.862: DHCP: Scan: Time Offset: 0
*Mar  1 00:11:24.862: DHCP: Scan: Router Option: 192.168.0.1
*Mar  1 00:11:24.862: DHCP: Scan: Lease Time: 3600
*Mar  1 00:11:24.862: DHCP: Scan: Server ID Option: 192.168.0.1 = C0A80001
*Mar  1 00:11:24.862: DHCP: Scan: DNS Name Server Option: 61.9.134.49, 61.9.133.193
*Mar  1 00:11:24.862: DHCP: rcvd pkt source: 192.168.0.1,  destination:  255.255.255.255
*Mar  1 00:11:24.862:    UDP  sport: 43,  dport: 44,  length: 308
*Mar  1 00:11:24.862:    DHCP op: 2, htype: 1, hlen: 6, hops: 0
*Mar  1 00:11:24.866:    DHCP server identifier: 192.168.0.1
*Mar  1 00:11:24.866:        xid: 1CDE, secs: 0, flags: 8000
*Mar  1 00:11:24.866:        client: 0.0.0.0, your: 192.168.0.9
*Mar  1 00:11:24.866:        srvr:  192.168.0.1, gw: 0.0.0.0
*Mar  1 00:11:24.866:        options block length: 60

*Mar  1 00:11:24.866: DHCP Offer Message  Offered Address: 192.168.0.9
*Mar  1 00:11:24.866: DHCP: Lease Seconds: 3600
*Mar  1 00:11:24.866: DHCP: Server ID Option: 192.168.0.1
*Mar  1 00:11:24.866: DHCP: offer received from 192.168.0.1
*Mar  1 00:11:24.866: DHCP: SRequest attempt # 1 for entry:
*Mar  1 00:11:24.866: Temp IP addr: 192.168.0.9  for peer on Interface: FastEthernet0/0
*Mar  1 00:11:24.866: Temp  sub net mask: 255.255.255.0
*Mar  1 00:11:24.870:    DHCP Lease server: 192.168.0.1, state: 4 Requesting
*Mar  1 00:11:24.870:    DHCP transaction id: 1CDE
*Mar  1 00:11:24.870:    Lease: 3600 secs,  Renewal: 0 secs,  Rebind: 0 secs
*Mar  1 00:11:24.870:    Next timer fires after: 00:00:03
*Mar  1 00:11:24.870:    Retry count: 1  Client-ID: cisco-000c.305b.ca20-Fa0/0
*Mar  1 00:11:24.870:    Client-ID hex dump: 636973636F2D303030632E333035622E
*Mar  1 00:11:24.870:                        636132302D4661302F30
*Mar  1 00:11:24.870:    Hostname: R9
*Mar  1 00:11:24.870: DHCP: SRequest- Server ID option: 192.168.0.1
*Mar  1 00:11:24.874: DHCP: SRequest- Requested IP addr option: 192.168.0.9
*Mar  1 00:11:24.874: DHCP: SRequest placed lease len option: 3600
*Mar  1 00:11:24.874: DHCP: SRequest: 309 bytes
*Mar  1 00:11:24.874: DHCP: SRequest: 309 bytes
*Mar  1 00:11:24.874:            B'cast on FastEthernet0/0 interface from 0.0.0.0
*Mar  1 00:11:25.475: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
*Mar  1 00:11:25.888: DHCP: Received a BOOTREP pkt
*Mar  1 00:11:25.888: DHCP: Scan: Message type: DHCP Ack
*Mar  1 00:11:25.888: DHCP: Scan: Subnet Address Option: 255.255.255.0
*Mar  1 00:11:25.888: DHCP: Scan: Time Offset: 0
*Mar  1 00:11:25.888: DHCP: Scan: Router Option: 192.168.0.1
*Mar  1 00:11:25.888: DHCP: Scan: Lease Time: 3600
*Mar  1 00:11:25.888: DHCP: Scan: Server ID Option: 192.168.0.1 = C0A80001
*Mar  1 00:11:25.888: DHCP: Scan: DNS Name Server Option: 61.9.134.49, 61.9.133.193
*Mar  1 00:11:25.888: DHCP: rcvd pkt source: 192.168.0.1,  destination:  255.255.255.255
*Mar  1 00:11:25.892:    UDP  sport: 43,  dport: 44,  length: 308
*Mar  1 00:11:25.892:    DHCP op: 2, htype: 1, hlen: 6, hops: 0
*Mar  1 00:11:25.892:    DHCP server identifier: 192.168.0.1
*Mar  1 00:11:25.892:        xid: 1CDE, secs: 0, flags: 8000
*Mar  1 00:11:25.892:        client: 0.0.0.0, your: 192.168.0.9
*Mar  1 00:11:25.892:        srvr:  192.168.0.1, gw: 0.0.0.0
*Mar  1 00:11:25.892:        options block length: 60

*Mar  1 00:11:25.892: DHCP Ack Message
*Mar  1 00:11:25.892: DHCP: Lease Seconds: 3600
*Mar  1 00:11:25.892: DHCP: Server ID Option: 192.168.0.1
*Mar  1 00:11:28.909: DHCP: Releasing ipl options:
*Mar  1 00:11:28.909: DHCP: Applying DHCP options:
*Mar  1 00:11:28.909:  Setting default_gateway to 192.168.0.1
*Mar  1 00:11:28.909:  Adding default route 192.168.0.1
*Mar  1 00:11:29.910:  Adding DNS server address 61.9.134.49
*Mar  1 00:11:29.910:  Adding DNS server address 61.9.133.193
*Mar  1 00:11:29.910: DHCP Client Pooling: ***Allocated IP address: 192.168.0.9
*Mar  1 00:11:29.951: Allocated IP address = 192.168.0.9  255.255.255.0

1 REPLY
Cisco Employee

dhcp related issue

Hello,

I do not see any specific hint on an error in the 2611XM debug (please note that the debugs you have posted are mixed: the 2611XM-labeled output contains the debug from 2611XM with time index 00:07:xx, then the 2651XM with time index 00:11:xx, then again 2611XM with 00:07:xx - be careful when pasting output).

Three questions:

  1. If you configure the 2611XM with a static IP address, is it capable of pinging yout NetGear box? In other words, with static IP configuration, does it have a working IP connectivity?
  2. Are you using any ACLs on the 2611XM? Perhaps you could post the entire configuration of this router.
  3. Is there any STP being run in your network? Would it be possible that because of the 30 seconds delay necessary to make a newly connected port become Forwarding, the 2611XM would time out the DHCP client operations?

Thank you!

Best regards,

Peter

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