End Point Learning¶

In ACI, the lookup is done in this order:

L2 EP table
If it is a routed traffic, L3 EP table
If not found in the L3 EP table, routing table

Let us look at this below example.

First, find out the platform independent vlan that is mapped for vlan-199.

leaf103# show vlan extended | grep vlan-199
 5    enet  CE         vlan-199

We can see that vlan-199 is mapped to vlan 5.

Let us confirm that vlan 5 corresponds to the correct EPG:

leaf103# show vlan id 5

 VLAN Name                             Status    Ports
 ---- -------------------------------- --------- -------------------------------
 5    tshoot:tshoot-ap:B-epg           active    Eth1/3, Po1

 VLAN Type  Vlan-mode
 ---- ----- ----------
 5    enet  CE

To check the content of end point table for the EPG:

leaf103# show endpoint vlan 5
Legend:
 s - arp              O - peer-attached    a - local-aged       S - static
 V - vpc-attached     p - peer-aged        M - span             L - local
 B - bounce           H - vtep
+-----------------------------------+---------------+-----------------+--------------+-------------+
      VLAN/                           Encap           MAC Address       MAC Info/       Interface
      Domain                          VLAN            IP Address        IP Info
+-----------------------------------+---------------+-----------------+--------------+-------------+
5/tshoot:tshoot-vrf                        vlan-199    6412.2575.0334 LpV                       po1
5                                          vlan-199    6412.2575.0331 LpV                       po1
tshoot:tshoot-vrf                          vlan-199     192.168.199.2 LV                        po1


+------------------------------------------------------------------------------+
                             Endpoint Summary
+------------------------------------------------------------------------------+
Total number of Local Endpoints     : 2
Total number of Remote Endpoints    : 0
Total number of Peer Endpoints      : 0
Total number of vPC Endpoints       : 2
Total number of non-vPC Endpoints   : 0
Total number of MACs                : 2
Total number of VTEPs               : 0
Total number of Local IPs           : 1
Total number of Remote IPs          : 0
Total number All EPs                : 2

To show more details about a local end point:

leaf103# show system internal epm endpoint mac 6412.2575.0331

MAC : 6412.2575.0331 ::: Num IPs : 1
IP# 0 : 192.168.199.2 ::: IP# 0 flags :
Vlan id : 5 ::: Vlan vnid : 8291 ::: VRF name : tshoot:tshoot-vrf
BD vnid : 16285610 ::: VRF vnid : 2949120
Phy If : 0x16000000 ::: Tunnel If : 0
Interface : port-channel1
Flags : 0x80005c25 ::: sclass : 16387 ::: Ref count : 5
EP Create Timestamp : 03/20/2018 21:27:35.632579
EP Update Timestamp : 03/20/2018 21:54:44.324243
EP Flags : local|vPC|peer-aged|IP|MAC|host-tracked|sclass|timer|
::::

To show the routing table:

leaf103# show ip route vrf tshoot:tshoot-vrf
IP Route Table for VRF "tshoot:tshoot-vrf"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>

192.168.199.0/24, ubest/mbest: 1/0, attached, direct, pervasive
    *via 10.0.64.64%overlay-1, [1/0], 00:35:37, static, tag 4294967295
192.168.199.254/32, ubest/mbest: 1/0, attached, pervasive
    *via 192.168.199.254, vlan4, [1/0], 00:35:37, local, local
192.168.200.0/24, ubest/mbest: 1/0, attached, direct, pervasive
    *via 10.0.64.64%overlay-1, [1/0], 00:00:06, static, tag 4294967295