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  • 1.  DHCP Snooping issues on EX4200

    Posted 12-09-2016 14:02

    Hello,

     

    I have an EX4200 (L3) with multiple vlans and a dhcp server attached  to port 0/0/1 and a cisco 2960  access switch connected to port 0/0/48. I have vlans 5, 6 and 10 defined ob both switches. DHCP server is on VLAN 10. I enabled DHCP snooping and trusted the port 0/0/1. I connnected multiple clients on different vlans and they all get an ip address fine. The issue I have is with the EX4200 doesnt show any binding for vlan 5 and 6. I see multiple bindings on Cisco switch for those vlans but not the EX. I connected clients to EX and put them in vlan 5 and 6, they got an ip fine but switch doesnt show any bindings. The only binding that the EX shows is for vlan 10 where the DHCP server is.

    I attached prt of the config

     

     

    forwarding-options {
        helpers {
            bootp {

                }
                interface {
                    vlan.5 {
                        server 10.81.10.10;
                    }
                    vlan.6 {
                        server 10.81.10.10;
                    }
       vlan.10 {
                        server 10.81.10.10;
                    }
                }
            }
        }
    }

     

    [edit ethernet-switching-options]
    abdel# show
    secure-access-port {
        interface ge-0/0/1.0 {
            dhcp-trusted;
        }

        vlan vlan5 {
            examine-dhcp;

        vlan vlan6 {
            examine-dhcp;

        }
        vlan vlan10 {
            examine-dhcp;

        }
        dhcp-snooping-file {
            location /var/home/DHCPSNOOPING.log;
            write-interval 60;
        }
    }

     

     

    Has Anyone run into this issue before?

     

     



  • 2.  RE: DHCP Snooping issues on EX4200

    Posted 12-09-2016 19:07

    Hi,

     

    Can you please tell what version of code you are running on the 4200.

     

    -Ramesh.G



  • 3.  RE: DHCP Snooping issues on EX4200

    Posted 12-10-2016 05:55

     

    I running  [11.4R5.5]



  • 4.  RE: DHCP Snooping issues on EX4200
    Best Answer

     
    Posted 12-11-2016 17:09

    You should try either latest 12.3R release or latest 15.1R release and see what happens.  Lots of changes from 11.4.



  • 5.  RE: DHCP Snooping issues on EX4200

    Posted 12-11-2016 18:04

    rccpgm,

     

    I have the same setup working in a test environment with an older version. The issue is the production environment and I cannot upgrade for now.

     

    Thanks