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HP5510 HI DHCP Snooping

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  • 1.  HP5510 HI DHCP Snooping

    Posted Apr 02, 2018 10:52 AM

     have the following scenario:

    UBUNTU DHCP Server <-> SW 1 Cisco Catalyst 3750 <-> SW 2 HP 5510 HI <-> SW 3 Allied 280X <-> Windows Client 10.
    All switchs are with DHCP snooping enabled.

    SW 3 has two interfaces and relay to the dhcp server;
    SW 2 has the uplink ports confirmed with dhcp snooping trust;


    When I disable dhcp snooping from Sw 2 HP 5510 HI the client receives ip normally (dhcp server sends the message "DHCPACK"). When I enable dhcp snoping on SW 2 the client does not receive ip.

    Does anyone have any solutions to this problem?


    P.S.

    DHCP logs with DHCP snoopoing disabled in SW 2:
    Apr 2 10:20:17 ipe dhcpd: DHCPDISCOVER from 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:20:18 ipe dhcpd: DHCPOFFER on 10.10.29.3 to 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:20:18 ipe dhcpd: DHCPREQUEST for 10.10.29.3 (10.15.0.3) from 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:20:18 ipe dhcpd: DHCPACK on 10.10.29.3 to 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9




    DHCP Logs with DHCP Snooping Enabled in SW 2:

    Apr 2 10:55:01 ipe dhcpd: DHCPDISCOVER from 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:55:01 ipe dhcpd: DHCPOFFER on 10.10.29.3 to 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:55:10 ipe dhcpd: DHCPDISCOVER from 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:55:10 ipe dhcpd: DHCPOFFER on 10.10.29.3 to 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:55:25 ipe dhcpd: DHCPDISCOVER from 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:55:25 ipe dhcpd: DHCPOFFER on 10.10.29.3 to 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:55:58 ipe dhcpd: DHCPDISCOVER from 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:55:58 ipe dhcpd: DHCPOFFER on 10.10.29.3 to 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:56:03 ipe dhcpd: DHCPDISCOVER from 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9
    Apr 2 10:56:03 ipe dhcpd: DHCPOFFER on 10.10.29.3 to 50: b7: c3: 40: 5d: b2 (DESKTOP-73G5COG) via 10.10.28.9


    #DHCP


  • 2.  RE: HP5510 HI DHCP Snooping

    Posted May 16, 2018 07:54 PM

    Hello !

    Post command output:

    display dhcp-snooping trust



    and enable debug

    debugging dhcp-snooping all

     



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