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  • 1.  Setup 2 IRF ports instead of 4 HPE FF 5700-40XG-2QSFP+

    Posted Aug 06, 2020 03:47 AM

    hello,

    I'm trying to put in IRF 2 HPE FF 5700-40XG-2QSFP+ with 2 ports on each router.

    I've seen on the HP configuration guide that the port of the routers works by 4.

    I already tried to configure IRF with 4 port on each switch and with only 2 transceiver on each switch but it doesn't work.

     

    I would like to know if it's possible to use only 2 port on each switch for the IRF ?

     

    Thanks in advance,

    Regards;

     



  • 2.  RE: Setup 2 IRF ports instead of 4 HPE FF 5700-40XG-2QSFP+

    Posted Aug 06, 2020 04:43 AM

    Hi @Alexandre96 !

    Unfortunately, the IRF feature works per port group and this model has its ports grouped by 4 physical ports in a group.

    Here is what the IRF guide says:

    When you use the 10GBase-T Ethernet ports as IRF physical interfaces, follow these restrictions
    and guidelines:
    The 10GBase-T Ethernet ports are grouped by port number in order, starting from 1. Each group contains four ports. If you use one port in a group for IRF links, you must also use all the other ports in the group for IRF links. However, you can bind the ports to different IRF ports.
    Before you bind a 10GBase-T Ethernet port to an IRF port or remove it from the IRF port, you must shut down all the 10GBase-T Ethernet ports in the same group.
    Bring up the ports after you complete the operation.

    Hope this helps!

     



  • 3.  RE: Setup 2 IRF ports instead of 4 HPE FF 5700-40XG-2QSFP+

    Posted Aug 06, 2020 04:46 AM

    Hi,

    Thanks for your reply,

    There is no possibillity to "break" those groups or to reduce it manually ?

    Can the ports be configure in IRF but not use ?

    Thanks for your help !

    Best regards,



  • 4.  RE: Setup 2 IRF ports instead of 4 HPE FF 5700-40XG-2QSFP+

    Posted Aug 06, 2020 06:55 AM

    Unfortunately, you can't break those groups into smaller chunks. It is ASIC's hardware design to use groups of 4 ports for certain features. But you are not obliged to have all 8 ports (4 on each stack member) wired, just configure all of them for IRF and wire as many ports as you wish - 1, 2, 3 or all 4. IRF will adapt and will use only active physical ports.

    So in other words you can configure ports 1-4 on each switch for IRF, as:

    Slot 1:
    irf-port 1/1
    port group interface TenGigE1/0/1
    port group interface TenGigE1/0/2
    port group interface TenGigE1/0/3
    port group interface TenGigE1/0/4

    Slot 2:
    irf-port 2/2
    port group interface TenGigE2/0/1
    port group interface TenGigE2/0/2
    port group interface TenGigE2/0/3
    port group interface TenGigE2/0/4

    and then you can wire up only XGE1/0/1,XGE1/0/2 on Slot 1 to XGE2/0/1, XGE2/0/2 on Slot 2 and IRF will work fine over those two wires. No issues with that. It's only one limitation - you won't be able to use the unconnected ports XGE*/0/3, XGE*/0/4 for normal traffic since they are configured as IRF and will work as IRF ports only.

     

     



  • 5.  RE: Setup 2 IRF ports instead of 4 HPE FF 5700-40XG-2QSFP+

    Posted Aug 20, 2020 10:24 AM
     
    Did you have time to try the solution proposed? Did it resolve the problem?
     
    Thank you in advance!