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  • 1.  2 P2P Connection over EX4400 and Use it as Layer-2 Link between EX

    Posted 10-10-2024 11:11

    Hi ALL, 

    I have two Point-2-Point ISP Connection between different location, at each location link is terminated on EX4400. 

    While we configured trunk at both side and pass all vlans, my all vlans of one location is working fine at another location, but while I am going to use aggregation port instead of trunk, my aggregation port is showing down while physical interface is UP. 
    at the same while I am checking mac or LLDP neighbor from either location it is not showing any LLDP neighbor also in LACP Interface output it is showing detached for that physical interface. 

    I have EX4400 with basic default license. 

    Is there any-one can help me on this, to extend my vlan from one location to another over ISP P2P link connected with EX4400 at the same time we can use second ISP link as redundancy.  

    Regards 
    Suraj Kant Singh



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    SURAJ SINGH
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  • 2.  RE: 2 P2P Connection over EX4400 and Use it as Layer-2 Link between EX

    Posted 10-11-2024 02:20

    Hi Suraj,

    A port aggregation (LAG) is not equivalent to a trunk. If your single port works fine as a trunk and you want to use a LAG instead of a single port, you need to configure a LAG on both sides of the connection, and then configure the trunk mode for that LAG.

    Both links in the LAG work semultaniously.  The traffice will be balanced between two links.  What kind of P2P ISP connections do you have ( dark fiber or  L2VPN)?

    If you need active-backup solution you should use another solution.

    BR,



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    IHOR SHTANKO
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  • 3.  RE: 2 P2P Connection over EX4400 and Use it as Layer-2 Link between EX

    Posted 10-15-2024 06:36

    I think ISP provide us QnQ tunnel, not sure. 
    Yes, I am using 2 different ISP between location, I want to aggregate ISP into single aggregation port so that I got redundancy, I will be able to configure link-protection primary/backup feature on aggregation port. 



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    SURAJ SINGH
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  • 4.  RE: 2 P2P Connection over EX4400 and Use it as Layer-2 Link between EX

    Posted 10-15-2024 06:58

    Please check this solution. I think  it should works for you.

    https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/rtgs-on-lags.html

    If you need your links work in active-backup mode between switches, you need use Redundant Trunk Link configuration.

    https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/redundant-trunk-groups.html

    If you need your links work in active-active mode between switches, you need use link aggregation group configuration.

    https://www.juniper.net/documentation/us/en/software/junos/interfaces-security-devices/topics/topic-map/security-interface-config-aggregated-ethernet.html



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    IHOR SHTANKO
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  • 5.  RE: 2 P2P Connection over EX4400 and Use it as Layer-2 Link between EX

    Posted 11-25-2024 07:41

    Hi IHOR SHTANKO, 

    I checked and found ISP provide me L2VPN Q-in-Q tunnel between my sites. 

    Regards
    Suraj Kant Singh



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    SURAJ SINGH
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  • 6.  RE: 2 P2P Connection over EX4400 and Use it as Layer-2 Link between EX

    Posted 11-26-2024 11:34

    Hi Suraj Singh,

    I hope this example will help you.

    https://supportportal.juniper.net/s/article/LACP-between-two-devices-with-a-transit-device-in-between-using-Layer2-Protocol-Tunneling?language=en_US

    In this example ae0 interface configured as L3.  You need use L2 configuration for ae0:

    set interfaces ae0 unit 0 family ethernet-switching port-mode trunk
    set interfaces ae0 unit 0 family ethernet-switching vlan members {all or list VLAN}
    set interfaces ae0 aggregated-ether-options lacp active
    set interfaces ae0 aggregated-ether-options lacp periodic fast

    BR,



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    IHOR SHTANKO
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  • 7.  RE: 2 P2P Connection over EX4400 and Use it as Layer-2 Link between EX

    Posted 11-27-2024 08:23

    In my case, I have 2 ISP connection between Junos devices.  

    First ISP

    EX4400(ge-0/0/14)--------------------------------------------------JIO(ISP)---------------------------------------------(ge-1/0/14)EX4400

    Second ISP

    EX4400(ge-1/0/14)--------------------------------------------------Airtel(ISP)---------------------------------------------(ge-0/0/14)EX4400

    If I am using any one link it is working fine, for using both link at same time, I created aggregated interface as per below configuration at both side switch. 

    set interface ge-1/0/14 ether-option 802.3ad ae101
    set interface ge-0/0/14 ether-option 802.3ad ae101
    set interface ae101 aggregated-ether-option lacp active
    set interface ae101 unit 0 family ethernet switching interface-mode trunk
    set interface ae101 unit 0 family ethernet switching vlan member all

    But after that while I am checking interface terse of ae101, found physical link is up but ae101 is down. 



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    SURAJ SINGH
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  • 8.  RE: 2 P2P Connection over EX4400 and Use it as Layer-2 Link between EX

     
    Posted 11-27-2024 14:22

    Hi There. It seems you are trying to run LACP over a L2 service. Please keep in mind that LACP frames are native or untagged so therefore your switch will send LACP frames to the ISP as untagged. This means the ISP will need to transport the frame natively or will need to add a service tag on it and then transport it over the L2 service. If you want this working, you will need to have an access port to your ISP and then they can tag your LACP frame. The reason why your ae0 is down because of LACP in detached state. Some work arounds are you can create a physical loop on your switch and tag the traffic out to your ISP, you request your ISP to give you an access port or you can look at BFD if the interface is a routed interface on the switch.