RIB Component

The RIB component receives routes from each routing protocol and stores them in the RIB. For each network prefix the 'best' route is sent to the dataplane for use when forwarding packets. By default, flock uses the Linux kernel as dataplane, but it can be configured to use other dataplanes.

Operational State

Stats

flock@r70:~$ flockc rib vrf default stats
{"total":15,"total_v4":12,"total_v6":3, ...}

Longest Prefix Match (LPM) for destination

• fib_ip_nhs are the resolved next hops taken from the 'best' protocol

    flock@r70:~$ flockc rib vrf default lpm 70.0.70.1
    {"prefix":"70.0.70.0/24","route":{"fib_ip_nhs":[{"ConnectedNh":{"intf_id":125675, ...,"table_id":{"afi":"ipv4-unicast","vrf_id":254}}}], ...,"protos":[{"admin_dist":0, ...,"origin":"Connected", ...,"ip_nhs":[{"ConnectedNh":{...}}], ...}]}}
  

Single RIB prefix entry

flock@r70:~$ flockc -f json-pretty rib vrf default lookup 70.0.0.0/8
{
  "protos": [
    {
      "admin_dist": 1,
      "origin": {
        "Static": "Conf"
      },
      ...
      "ip_nhs": [
        {
          "SpecialNh": {
            "table_id": {
              "vrf_id": 254,
              "afi": "ipv4-unicast"
            },
            "special_nh_type": "Discard",
            ...
          }
        }
      ],
      ...
    }
  ],
  "fib_ip_nhs": [
    {
      "SpecialNh": {
        ...
        "special_nh_type": "Discard",
        ...
      }
    }
  ],
  ...
}

All prefix entries in the RIB

Walk starts at <root> and returns all prefixes within. Use 0.0.0.0/0 or ::/0 for the full IPv4 / IPv6 table. Only the 'best' origin protocol is shown per prefix.

    flock@r70:~$ flockc rib vrf default walk 0.0.0.0/0
    [["50.0.0.0/8",{"protos":[{"admin_dist":20,"origin":"Bgp", ...,"ip_nhs":[{"RecursiveNh":{ ...,"ip_addr":"90.0.93.61", ...}}], ...}],"fib_ip_nhs":[{"AttachedNh":{ ...,"ip_addr":"90.0.93.61", ...}}], ...}],["70.0.0.0/8",{"protos":[{"admin_dist":1,"origin":{"Static":"Conf"}, ...}], ...}],["70.0.70.0/24",{"protos":[{"admin_dist":0,"origin":"Connected", ...}], ...}], ...]

Connected routes

Connected routes installed by the system interface layer can be looked up or walked independently via the connected subcommand:

flockc rib vrf <vrf-name> connected lookup <ip-network>
flockc rib vrf <vrf-name> connected walk [--af ipv4 | ipv6]

RIB Operation

Help

flockc rib --help

RIB stats

flockc rib vrf <vrf-name> stats

RIB prefix lookup

flockc rib vrf <vrf-name> lookup <ip-network>

RIB walk

flockc rib vrf <vrf-name> walk <root> [--start-from <prefix>] [--max-entries <N>]

Longest Prefix Match (LPM)

flockc rib vrf <vrf-name> lpm <ip-address>

Connected route lookup / walk

flockc rib vrf <vrf-name> connected lookup <ip-network>
flockc rib vrf <vrf-name> connected walk [--af ipv4 | ipv6]

Label RIB (LRIB)

The Label RIB manages MPLS label bindings programmed by protocols such as BGP and OSPF Segment Routing.

LRIB stats

flockc lrib stats

LRIB label lookup

flockc lrib lookup <label>

LRIB walk

flockc lrib walk