Switching

 View Only
last person joined: 5 hours ago 

Ask questions and share experiences about EX and QFX portfolios and all switching solutions across your data center, campus, and branch locations.
  • 1.  Changing irb.0 - Inband management.

    Posted 04-01-2023 03:27

    Hi! 
    I have a problem on my EX4600 that I cannot get my head around.
    I was trying to change my  management vlan (same as cisco mgmt ) to another new subnet (juniper mgmt) 
    Initially I assigned
     irb.0 family inet address <ip from cisco mgmt>
    Created vlan and assigned to interface this to  vlan

    Switches
    vlan-id 911;
    l3-interface irb.0;

    I then created a Juniper Management vlan and assigned it to  irb.999 
    Juniper Management
    vlan-id 999;
    l3-interface irb.999;

    show interfaces irb.999
    family inet {
        address 172.22.73.129/27;
    }

    The interface out is 
    show interfaces xe-0/0/0
    unit 0 {
        family ethernet-switching {
            interface-mode trunk;
            vlan {
                members all;
            }
            storm-control default;
        }
    }

    I can ping and web manage the ip address of the switch on the Juniper vlan

    If I try to change irb.0 to a different ip address in the juniper vlan or delete irb.0 or remove irb.0 from the cisco management vlan I cannot get any traffic on either ip address. 

    I totally get this is odd, I blame it on the shortages in network equipment! 

    show interfaces xe-0/0/0
    unit 0 {
        family ethernet-switching {
            interface-mode trunk;
            vlan {
                members all;
            }
            storm-control default;
        }
     
     
    {master:0}[edit]
     JCore# show interfaces irb
    unit 0 {
        family inet {
            address <ip1>;
        }
    }
    unit 303 {
        family inet;
    }
    unit 999 {
        family inet {
            address <ip2>;
        }
    }
     
    {master:0}[edit]
     JCore# show vlans Management
    vlan-id 999;
    l3-interface irb.999;
     
    {master:0}[edit]
     JCore# show vlans Switches
    vlan-id 911;
    l3-interface irb.0;

    Many Thanks!
    Dazza







    ------------------------------
    DARREN HITCHEN
    ------------------------------


  • 2.  RE: Changing irb.0 - Inband management.

    Posted 04-03-2023 04:02

    I am still trying to figure this out. 
    I was able to change the ip address of management set to irb to a new Juniper vlan by changing the next-hop. 

    Confused as the next hop was in the cisco core management vlan. 



    ------------------------------
    DARREN HITCHEN
    ------------------------------



  • 3.  RE: Changing irb.0 - Inband management.

    Posted 04-03-2023 05:19

    Which VLAN is the next hop in? 



    ------------------------------
    PAUL HERBERT
    ------------------------------



  • 4.  RE: Changing irb.0 - Inband management.

    Posted 04-03-2023 05:30

    The next hop ip address is in the new juniper lan and works 
    I guess that is where I went wrong 

    The cisco core that I am replacing has a 0.0.0.0/0 route to the firewall, so the next step of PoC is to create the firewall Vlan and put the next-hop to be the firewall?




    ------------------------------
    DARREN HITCHEN
    ------------------------------



  • 5.  RE: Changing irb.0 - Inband management.

    Posted 04-03-2023 05:43

    I am not entirely sure without having the topology and full config but "show route" on the EX4600 will show you where traffic will be forwarded. 



    ------------------------------
    PAUL HERBERT
    ------------------------------