cisco — Troubleshooting Broadcast, Unkown Unicast, Multicast Traffic Forwarding

The following output confirms that an ARP request has been received and a multicast route has been built: VTEP-1# show ip mroute 239.10.10.10 10.255.1.1 IP Multicast Routing Table Flags:

D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected, L - Local, P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet, X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement, U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel, z - MDT-data group sender, Y - Joined MDT-data group, y - Sending to MDT-data group, G - Received BGP C-Mroute, g - Sent BGP C-Mroute, N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed, Q - Received BGP S-A Route, q - Sent BGP S-A Route, V - RD & Vector, v - Vector, p - PIM Joins on route, x - VxLAN group, c - PFP-SA cache created entry Outgoing interface flags:

H - Hardware switched, A - Assert winner, p - PIM Join Timers: Uptime/Expires Interface state: Interface, Next-Hop or VCD, State/Mode (10.255.1.1, 239.10.10.10), 00:00:25/00:02:34, flags: FTx x flag set for VxLAN group Incoming interface: Loopback999, RPF nbr 0.0.0.0 Broadcast being encapsulated into VXLAN tunnel IP Outgoing interface list: TwoGigabitEthernet1/0/2, Forward/Sparse, 00:00:23/00:03:06 Sending towards core to VTEP-2 (10.255.1.4, 239.10.10.10), 3d18h/00:02:25, flags: JTx BUM traffic from VTEP-2 (if the ARP request was from VTEP-2) Incoming interface: TwoGigabitEthernet1/0/2, RPF nbr 10.1.1.6 Outgoing interface list:

Tunnel0, Forward/Sparse-Dense, 3d18h/00:00:14 Tunnel 0 is the VXLAN tunnel used for decapsulation Confirm the Presence of ARP Request Replies in Embedded Capture The following output confirms that the ARP request replies are present in embedded capture: VTEP-1# show monitor capture 1 buffer display-filter "arp" Starting the packet display ........ Press Ctrl + Shift + 6 to exit 7 0.000018 00:5f:86:02:10:c6 -> ff:ff:ff:ff:ff:ff ARP 110 Who has 10.10.10.12?

Tell 10.10.10.11 9 0.000022 28:52:61:bf:a9:46 -> 00:5f:86:02:10:c6 ARP 110 10.10.10.12 is at 28:52:61:bf:a9:46 Verify that the Encapsulated ARP Request is Leaving in a Multicast Group to a VXLAN UDP Destination Port The following image shows the ARP request leaving encapsulated in the multicast group 239.10.10.10, sourced from a VXLAN Loopback, to the VXLAN UDP destination port 4789 in the VNI 10001 and VLAN 10. Troubleshooting BGP EVPN VXLAN Troubleshooting Broadcast, Unkown Unicast, Multicast Traffic Forwarding Troubleshooting BGP EVPN VXLAN 5