TCAM flow table support add arp/mpls and other normal flows. Due to ASIC limitation these flows cannot use one same slice, so we use group to devide these flows. In other words, arp and mpls flows use different groups from normal flow, we said them extend groups.

Before PicOS2.8.1, user can add these different groups flow at same time. From PicOS2.8.1, user also can add these flows at same time, but also can control disable or enable extend group for arp/mpls flows. The command as below,

ovs-vsctl disable-extend-group <TRUE|FALSE>

Once disable it, user will not allowed to add arp flow which include arp_tpa or arp_spa, and not allowed to add mpls flow include mpls_label. But support add dl_type=0x0806 and dl_type=0x8847/0x8848.

For example,

admin@PicOS-OVS$ovs-vsctl disable-extend-group TRUE
  Please reboot for the change to take effect!
admin@PicOS-OVS$sudo systemctl restart picos
 
..........................
admin@PicOS-OVS$ovs-pica8 entered promiscuous mode
device br0 entered promiscuous mode
admin@PicOS-OVS$
admin@PicOS-OVS$ovs-vsctl show-extend-group
extend group: disabled
admin@PicOS-OVS$

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