OpenForum RSS: Cisco 881 �� DHCP (�� )

Cisco 881 �� DHCP (�� ) (Hammer)

Thu, 07 Jan 2016 03:04:59 GMT

>[�� ]
> !
> interface FastEthernet4
> description MortonTelecom
> ip address dhcp
> ip nat outside
> ip virtual-reassembly in
> shutdown
> duplex auto
> speed auto
> !

�� updown ��, �� , �� fa3

�� ?
�� access vlan 2

� ��

no ip dhcp use vrf connected
!
ip dhcp pool LAN
network 10.10.10.0 255.255.255.0
default-router 10.10.10.1
lease 0 1
!

interface FastEthernet0/1
ip address 10.10.10.1 255.255.255.0
duplex auto
speed auto
!

3725-1-1#sh ip dhcp binding
Bindings from all pools not associated with VRF:
IP address Client-ID/ Lease expiration Type
Hardware address/
User name
10.10.10.2 0100.5079.6668.00 Mar 01 2002 01:15 AM Automatic

�� ?

Cisco 881 �� DHCP (�� ) (Andrey)

Wed, 09 Dec 2015 10:50:39 GMT

>>[�� ]

�� service dhcp � �� .

Cisco 881 �� DHCP (�� ) (tsarush)

Wed, 09 Dec 2015 06:31:48 GMT

>[�� ]
>>>> �� , ��
>>>> �� ... �� ...
>>>> �� ...
>>> ��
>>> wireshar �� . �� "��" � ��.
>> �� ...
>> wireshark ��, �� ...
>> �� dhcp �� ...
> debug dhcp detail
> �� ? � DHCP snooping, ��.

�� . �� cisco �� 4 �� (L2)

��

Building configuration...

Current configuration : 2631 bytes
!
version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname C881W-E-K9
!
boot-start-marker
boot-end-marker
!
aaa new-model
!
!
aaa authentication login default local
!
aaa session-id common
ethernet lmi ce
bsd-client server url https://cloudsso.cisco.com/as/token.oauth2

Cisco 881 �� DHCP (�� ) (ShyLion)

Wed, 09 Dec 2015 06:17:35 GMT

>[�� ]
>>> � �� ...
>>> �� dhcp ��
>>> �� , ��
>>> �� ... �� ...
>>> �� ...
>> ��
>> wireshar �� . �� "��" � ��.
> �� ...
> wireshark ��, �� ...
> �� dhcp �� ...

debug dhcp detail

�� ? � DHCP snooping, ��.

Cisco 881 �� DHCP (�� ) (tsarush)

Wed, 09 Dec 2015 06:14:06 GMT

>[�� ]
>> vlan 2 � �� ...
>> �� hdcp pool 192.168.17.0
>> � �� vlan 2
>> � �� ...
>> �� dhcp ��
>> �� , ��
>> �� ... �� ...
>> �� ...
> ��
> wireshar �� . �� "��" � ��.

�� ...

wireshark ��, �� ...

https://yadi.sk/d/ByJl-aD6m6MXr

�� wireshark ��

Cisco 881 �� DHCP (�� ) (ShyLion)

Wed, 09 Dec 2015 06:12:36 GMT

>[�� ]
>> switchport mode access
>> switchport nonegotiate
> vlan 2 � �� ...
> �� hdcp pool 192.168.17.0
> � �� vlan 2
> � �� ...
> �� dhcp ��
> �� , ��
> �� ... �� ...
> �� ...

��

wireshar �� . �� "��" � ��.

Cisco 881 �� DHCP (�� ) (tsarush)

Wed, 09 Dec 2015 05:56:26 GMT

>[�� ]
>> Dec 8 11:23:24.809: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to down
>> Dec 8 11:23:26.445: %DTP-5-TRUNKPORTON: Port Fa3 has become dot1q trunk
>> Dec 8 11:23:27.933: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to up
>> Dec 8 11:23:28.933: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet3, changed
>> state to up
>> �� =)
> �� . �� Vlan 2 ?
> int f3
> switchport mode access
> switchport nonegotiate

vlan 2 � �� ...
�� hdcp pool 192.168.17.0
� �� vlan 2

� �� ...

�� dhcp ��
�� , �� ... �� ...

�� ...

Cisco 881 �� DHCP (�� ) (ShyLion)

Tue, 08 Dec 2015 12:45:09 GMT

>[�� ]
> state to down
> Dec 8 11:23:23.801: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan2, changed state
> to down
> Dec 8 11:23:24.301: DHCPD: checking for expired leases.
> Dec 8 11:23:24.809: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to down
> Dec 8 11:23:26.445: %DTP-5-TRUNKPORTON: Port Fa3 has become dot1q trunk
> Dec 8 11:23:27.933: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to up
> Dec 8 11:23:28.933: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet3, changed
> state to up
> �� =)

�� . �� Vlan 2 ?

int f3
switchport mode access
switchport nonegotiate

Cisco 881 �� DHCP (�� ) (tsarush)

Tue, 08 Dec 2015 11:26:47 GMT

>> wireshark �� .
> �� ?
> �� ip �� .
> debup ip dhcp server events
> term mon

�� ip �� cisco ��.

debuG ip dhcp server events

Dec 8 11:23:23.309: %DTP-5-NONTRUNKPORTON: Port Fa3 has become non-trunk
Dec 8 11:23:23.801: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet3, changed state to down
Dec 8 11:23:23.801: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan2, changed state to down
Dec 8 11:23:24.301: DHCPD: checking for expired leases.
Dec 8 11:23:24.809: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to down
Dec 8 11:23:26.445: %DTP-5-TRUNKPORTON: Port Fa3 has become dot1q trunk
Dec 8 11:23:27.933: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to up
Dec 8 11:23:28.933: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet3, changed state to up

�� =)

OpenForum RSS: Cisco 881 �������� � DHCP (�� �������)

Cisco 881 �������� � DHCP (�� �������) (Hammer)

Cisco 881 �������� � DHCP (�� �������) (Andrey)

Cisco 881 �������� � DHCP (�� �������) (tsarush)

Cisco 881 �������� � DHCP (�� �������) (ShyLion)

Cisco 881 �������� � DHCP (�� �������) (tsarush)

Cisco 881 �������� � DHCP (�� �������) (ShyLion)

Cisco 881 �������� � DHCP (�� �������) (tsarush)

Cisco 881 �������� � DHCP (�� �������) (ShyLion)

Cisco 881 �������� � DHCP (�� �������) (tsarush)

OpenForum RSS: Cisco 881 �� DHCP (�� )

Cisco 881 �� DHCP (�� ) (Hammer)

Cisco 881 �� DHCP (�� ) (Andrey)

Cisco 881 �� DHCP (�� ) (tsarush)

Cisco 881 �� DHCP (�� ) (ShyLion)

Cisco 881 �� DHCP (�� ) (tsarush)

Cisco 881 �� DHCP (�� ) (ShyLion)

Cisco 881 �� DHCP (�� ) (tsarush)

Cisco 881 �� DHCP (�� ) (ShyLion)

Cisco 881 �� DHCP (�� ) (tsarush)