Как получать IP по DHCP не удаляя маршрута 0.0.0.0?

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A Im(imas-filter)
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Как получать IP по DHCP не удаляя маршрута 0.0.0.0?

Сообщение A Im(imas-filter) » 27 дек 2011 16:09

Здравствуйте! Имеется CISCO 2811 с CUCME 7.1

Интерфейс FastEthernet0/1 подключен в один из четырех портов ADSL модема, где мы получаем телефониню по SIP. Этот порт на модеме настроен на отдельный ATMский VPI\VCI (в сторону SIP outbound-proxy server). Провайдер предоставляет отдельно интернет, отдельно sip-телефонию по разным VPI\VCI.

На циске был прописан следующий маршрут:
ip route 0.0.0.0 0.0.0.0 192.168.1.1

Проблема в том, что пока существует этот маршрут, циска не получает настройки IP адреса по DHCP на интерфейсе FastEthernet0/1

Вопрос: как сделать так чтобы, не удаляя маршрут ip route 0.0.0.0 0.0.0.0 192.168.1.1 получить настройки IP адреса на интерфесе FastEthernet0/1?

В данный момент конфигурация такая, чтобы принимались настройки :
interface FastEthernet0/1
description ID_PHONE_CONNECTION_VPI0_VCI41
ip address dhcp
duplex full
speed auto
no cdp enable
!
no ip dhcp-client broadcast-flag // без этой команды тоже не работает. Ответы должны быть unicast’ными


show dhcp lease
Temp IP addr: 10.11.31.10 for peer on Interface: FastEthernet0/1
Temp sub net mask: 255.255.255.0
DHCP Lease server: 10.0.0.161, state: 5 Bound
DHCP transaction id: B4B
Lease: 2590649 secs, Renewal: 1295324 secs, Rebind: 2266817 secs
Next timer fires after: 2w0d
Retry count: 0 Client-ID: cisco-001d.a2cf.6791-Fa0/1
Client-ID hex dump: 636973636F2D303031642E613263662E
363739312D4661302F31
Hostname: 2811CUCME

Кусок дебага где циска получает настройки
Debug dhcp detail.
2811CUCME(config-if)#
Dec 26 17:40:35.539: RAC: Starting DHCP discover on FastEthernet0/1
Dec 26 17:40:35.539: DHCP: Try 1 to acquire address for FastEthernet0/1
Dec 26 17:40:35.543: DHCP: allocate request
Dec 26 17:40:35.543: DHCP: new entry. add to queue, interface FastEthernet0/1
Dec 26 17:40:35.543: DHCP: SDiscover attempt # 1 for entry:
Dec 26 17:40:35.543: Temp IP addr: 0.0.0.0 for peer on Interface: FastEthernet0/1
Dec 26 17:40:35.543: Temp sub net mask: 0.0.0.0
Dec 26 17:40:35.543: DHCP Lease server: 0.0.0.0, state: 3 Selecting
Dec 26 17:40:35.543: DHCP transaction id: 2070
Dec 26 17:40:35.543: Lease: 0 secs, Renewal: 0 secs, Rebind: 0 secs
2811CUCME(config-if)#
Dec 26 17:40:35.543: Next timer fires after: 00:00:04
Dec 26 17:40:35.543: Retry count: 1 Client-ID: cisco-001d.a2cf.6791-Fa0/1
Dec 26 17:40:35.543: Client-ID hex dump: 636973636F2D303031642E613263662E
Dec 26 17:40:35.543: 363739312D4661302F31
Dec 26 17:40:35.543: Hostname: 2811CUCME
Dec 26 17:40:35.543: DHCP: SDiscover placed class-id option: 64736C666F72756D2E6F7267
Dec 26 17:40:35.543: DHCP: SDiscover: sending 311 byte length DHCP packet
Dec 26 17:40:35.543: DHCP: SDiscover 311 bytes
Dec 26 17:40:35.543: B'cast on FastEthernet0/1 interface from 0.0.0.0
Dec 26 17:40:36.499: DHCP: Received a BOOTREP pkt
Dec 26 17:40:36.499: DHCP: Scan: Message type: DHCP Offer
Dec 26 17:40:36.499: DHCP: Scan: Server ID Option: 10.0.0.161 = A0000A1
Dec 26 17:40:36.499: DHCP: Scan: Lease Time: 3600
Dec 26 17:40:36.499: DHCP: Scan: Subnet Address Option: 255.255.255.0
Dec 26 17:40:36.499: DHCP: Scan: Domain Name: online.kz
Dec 26 17:40:36.499: DHCP: rcvd pkt source: 10.11.31.1, destination: 10.11.31.11
Dec 26 17:40:36.499: UDP sport: 43, dport: 44, length: 308
Dec 26 17:40:36.499: DHCP op: 2, htype: 1, hlen: 6, hops: 0
Dec 26 17:40:36.499: DHCP server identifier: 10.0.0.161
Dec 26 17:40:36.499: xid: 2070, secs: 0, flags: 0
Dec 26 17:40:36.499: client: 0.0.0.0, your: 10.11.31.11
Dec 26 17:40:36.499: srvr: 0.0.0.0, gw: 10.11.31.1
Dec 26 17:40:36.499: options block length: 60

Dec 26 17:40:36.499: DHCP Offer Message Offered Address: 10.11.31.11
Dec 26 17:40:36.499: DHCP: Lease Seconds: 3600
Dec 26 17:40:36.499: DHCP: Server ID Option: 10.0.0.161
Dec 26 17:40:36.499: DHCP: offer received from 10.0.0.161
Dec 26 17:40:36.499: DHCP: SRequest attempt # 1 for entry:
Dec 26 17:40:36.499: Temp IP addr: 10.11.31.11 for peer on Interface: FastEthernet0/1
Dec 26 17:40:36.499: Temp sub net mask: 255.255.255.0
Dec 26 17:40:36.499: DHCP Lease server: 10.0.0.161, state: 4 Requesting
Dec 26 17:40:36.499: DHCP transaction id: 2070
Dec 26 17:40:36.499: Lease: 3600 secs, Renewal: 0 secs, Rebind: 0 secs
Dec 26 17:40:36.499: Next timer fires after: 00:00:03
Dec 26 17:40:36.499: Retry count: 1 Client-ID: cisco-001d.a2cf.6791-Fa0/1
Dec 26 17:40:36.499: Client-ID hex dump: 636973636F2D303031642E613263662E
Dec 26 17:40:36.499: 363739312D4661302F31
Dec 26 17:40:36.499: Hostname: 2811CUCME
Dec 26 17:40:36.499: DHCP: SRequest- Server ID option: 10.0.0.161
Dec 26 17:40:36.499: DHCP: SRequest- Requested IP addr option: 10.11.31.11
Dec 26 17:40:36.499: DHCP: SRequest placed lease len option: 3600
Dec 26 17:40:36.499: DHCP: SRequest placed class-id option: 64736C666F72756D2E6F7267
Dec 26 17:40:36.503: DHCP: SRequest: 329 bytes
Dec 26 17:40:36.503: DHCP: SRequest: 329 bytes
Dec 26 17:40:36.503: B'cast on FastEthernet0/1 interface from 0.0.0.0
Dec 26 17:40:36.503: DHCP: Received a BOOTREP pkt
Dec 26 17:40:36.503: DHCP: Scan: Message type: DHCP Offer
Dec 26 17:40:36.503: DHCP: Scan: Server ID Option: 92.46.61.13 = 5C2E3D0D
Dec 26 17:40:36.503: DHCP: Scan: Lease Time: 43200
Dec 26 17:40:36.503: DHCP: Scan: Subnet Address Option: 255.255.255.0
Dec 26 17:40:36.503: DHCP: Scan: Domain Name: online.kz
Dec 26 17:40:36.503: DHCP: rcvd pkt source: 10.11.31.1, destination: 10.11.31.11
Dec 26 17:40:36.503: UDP sport: 43, dport: 44, length: 308
Dec 26 17:40:36.503: DHCP op: 2, htype: 1, hlen: 6, hops: 1
Dec 26 17:40:36.503: DHCP server identifier: 92.46.61.13
Dec 26 17:40:36.503: xid: 2070, secs: 0, flags: 0
Dec 26 17:40:36.503: client: 0.0.0.0, your: 10.11.31.11
Dec 26 17:40:36.503: srvr: 92.46.61.13, gw: 10.11.31.1
Dec 26 17:40:36.503: options block length: 60

Dec 26 17:40:36.503: DHCP Offer Message Offered Address: 10.11.31.11
Dec 26 17:40:36.503: DHCP: Lease Seconds: 43200
Dec 26 17:40:36.503: DHCP: Server ID Option: 92.46.61.13
Dec 26 17:40:36.503: DHCP: offer received from 92.46.61.13
Dec 26 17:40:36.503: DHCP: offer received in bad state: Requesting punt
Dec 26 17:40:36.691: DHCP: Received a BOOTREP pkt
Dec 26 17:40:36.691: DHCP: Scan: Message type: DHCP Ack
Dec 26 17:40:36.691: DHCP: Scan: Server ID Option: 10.0.0.161 = A0000A1
Dec 26 17:40:36.691: DHCP: Scan: Lease Time: 3600
Dec 26 17:40:36.691: DHCP: Scan: Subnet Address Option: 255.255.255.0
Dec 26 17:40:36.691: DHCP: Scan: Domain Name: online.kz
Dec 26 17:40:36.691: DHCP: rcvd pkt source: 10.11.31.1, destination: 10.11.31.11
2811CUCME(config-if)#
Dec 26 17:40:36.691: UDP sport: 43, dport: 44, length: 308
Dec 26 17:40:36.695: DHCP op: 2, htype: 1, hlen: 6, hops: 0
Dec 26 17:40:36.695: DHCP server identifier: 10.0.0.161
Dec 26 17:40:36.695: xid: 2070, secs: 0, flags: 0
Dec 26 17:40:36.695: client: 0.0.0.0, your: 10.11.31.11
Dec 26 17:40:36.695: srvr: 0.0.0.0, gw: 10.11.31.1
Dec 26 17:40:36.695: options block length: 60

Dec 26 17:40:36.695: DHCP Ack Message
Dec 26 17:40:36.695: DHCP: Lease Seconds: 3600
Dec 26 17:40:36.695: DHCP: Server ID Option: 10.0.0.161
2811CUCME(config-if)#
Dec 26 17:40:39.699: DHCP: Releasing ipl options:
Dec 26 17:40:39.699: DHCP: Applying DHCP options:
Dec 26 17:40:39.699: DHCP Client Pooling: ***Allocated IP address: 10.11.31.11
Dec 26 17:40:39.699: DHCP: Received a BOOTREP pkt
Dec 26 17:40:39.699: DHCP: Scan: Message type: DHCP Ack
Dec 26 17:40:39.699: DHCP: Scan: Server ID Option: 92.46.61.13 = 5C2E3D0D
Dec 26 17:40:39.699: DHCP: Scan: Lease Time: 3600
Dec 26 17:40:39.699: DHCP: Scan: Subnet Address Option: 255.255.255.0
Dec 26 17:40:39.699: DHCP: Scan: Domain Name: online.kz
Dec 26 17:40:39.699: DHCP: rcvd pkt source: 10.11.31.1, destination: 10.11.31.11
Dec 26 17:40:39.699: UDP sport: 43, dport: 44, length: 308
2811CUCME(config-if)#
Dec 26 17:40:39.699: DHCP op: 2, htype: 1, hlen: 6, hops: 1
Dec 26 17:40:39.699: DHCP server identifier: 92.46.61.13
Dec 26 17:40:39.699: xid: 2070, secs: 0, flags: 0
Dec 26 17:40:39.699: client: 0.0.0.0, your: 10.11.31.11
Dec 26 17:40:39.699: srvr: 92.46.61.13, gw: 10.11.31.1
Dec 26 17:40:39.699: options block length: 60

Dec 26 17:40:39.699: DHCP Ack Message
Dec 26 17:40:39.699: DHCP: Lease Seconds: 3600
Dec 26 17:40:39.699: DHCP: Server ID Option: 92.46.61.13
Dec 26 17:40:39.699: DHCP: rcv ack 92.46.61.13 is not our server 10.0.0.161
Dec 26 17:40:39.767: Allocated IP address = 10.11.31.11 255.255.255.0

Dec 26 17:40:39.767: %DHCP-6-ADDRESS_ASSIGN: Interface FastEthernet0/1 assigned DHCP address 10.11.31.11, mask 255.255.255.0, hostname 2811CUCME

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