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NFX: VNF failes with "unable to map bac"

  • 1.  NFX: VNF failes with "unable to map bac"

    Posted 04-26-2024 07:22

    I want to deploy a VNF on a NFX. The network config is like this:

    • ge-0/0/0 is trunk with 3 VLANs
    • 2 VLANs goes to sxe-0/0/0
    • 1 VLAN goes to sxe-0/0/1
    • No interface mapping, no SR-IOV
    • The VNF has 2 productive interfaces (eth2 and eth3)

    If I start this VNF, the ovsbridge interfaces are down, there is no traffic visible, nor the NVF can be requested. I read hints to enable hugepages. If I enable them, I get the following error:

    Could not start VNF Test1: internal error: process exited while connecting to monitor: 2024-04-26T11:04:10.915754Z kvm: -object memory-backend-file,id=ram-node0,prealloc=yes,mem-path=/dev/huge1G/libvirt/qemu,share=yes,size=4194304000: unable to map bac

    Does someone know, if I really need hugepages for OVS and VLAN mapping? If yes, how do  I solve this issue? Why are these interfaces down?

    Network Name : ovs-sys-br 

       Interface : ovs-sys-br
       Type : internal, Link type : Full-Duplex, MAC : f4:bf:a8:57:6e:0a
       MTU : [], Link State :down, Admin State : down
       Native Vlan ID : None, Vlan mode : Trunk, Vlan Members : 1
       IPV4 : None, Netmask : None
       IPV6 : None, IPV6 netmask : None
           Rx-packets :       0
           Rx-drops   :       0
           Rx-errors  :       0
           Tx-packets :       4
           Tx-drops   :       4
           Tx-errors  :       0

       Interface : Test1_eth2
       Type : dpdkvhostuser, Link type : Full-Duplex, MAC : 00:00:00:00:00:00
       MTU : 1500, Link State :down, Admin State : up
       Native Vlan ID : None, Vlan mode : Access, Vlan Members : 200
       IPV4 : None, Netmask : None
       IPV6 : None, IPV6 netmask : None
           Rx-packets :       0
           Rx-drops   :       0
           Rx-errors  :       0
           Tx-packets :       0
           Tx-drops   :       530
           Tx-errors  :       0

       Interface : Test1_eth3
       Type : dpdkvhostuser, Link type : Full-Duplex, MAC : 00:00:00:00:00:00
       MTU : 1500, Link State :down, Admin State : up
       Native Vlan ID : None, Vlan mode : Access, Vlan Members : 13
       IPV4 : None, Netmask : None
       IPV6 : None, IPV6 netmask : None
           Rx-packets :       0
           Rx-drops   :       0
           Rx-errors  :       0
           Tx-packets :       0
           Tx-drops   :       3
           Tx-errors  :       0