Of these packets.I trying to see Wi-Fi (802.11) packets through Wireshark. When the Layer 3 gateway MX1 sends data packets, ARP replies, and neighborĪdvertisement packets, it uses the configured virtual MAC in the outer Ethernet header When you configure these statements, the configured virtual MAC overrides theĪutomatically generated virtual MAC. Use the virtual-gateway-v4-mac or virtual-gateway-v6-mac configuration statement at the [edit interfaces Virtual gateway IPv4 or IPv6 address in an EVPN-MPLS network.
#WIRESHARK MAC ADDRESS 00 SERIES#
Junos OS Release 22.1R1 on MX Series routers, you can similarly configure a default IPv6 MAC address for a default virtual gateway in EVPN-VXLAN networks. Starting with Junos OS Release 14.2R5 for MX Series routers and Junos OS Releaseġ5.1X53-D63 for the QFX10000 line of switches, you can explicitly configure an IPv4 or For more information about ERB overlays, see Example: Configuring an EVPN-VXLAN Edge-Routed Bridging Fabric with an Anycast Gateway. As a result, you don't need to configure a default virtual Inter-subnet traffic regardless of where the host is located or which gateway Interface on each gateway, each host uses the same MAC address when sending With the same MAC address configured for each IRB You repeat each IRB interface configuration on each gateway in theĮdge-routed bridging overlay. Also,Įach IRB interface is typically configured with an IP address and a static MACĪddress. Overlay, hosts are directly connected to the Layer 3 and Layer 2 gateways. Layer of QFX10000 switches function as both Layer 3 and Layer 2 gateways. Unknown unicast packet flooding isn't an issue in EVPN edge-routed bridging (ERB) Therefore, EX1įloods the domain with unknown unicast packets. In the header, EX1 is unable to find the virtual MAC in its MAC table. As a result, if Host 1 sends packets that include the virtual MAC When intermediary Layer 2 switch EX1 receives the ARP reply, it learns only the source Intermediary Layer 2 switch EX1 cannot see this MAC address, and therefore, does
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Sender MAC address within ARP reply packet: 00:00:5e:00:01:01 (virtual MAC) → Intermediary Layer 2 switch EX1 learns this MAC address.
Source MAC address in outer Ethernet header: 00:05:85:00:53:01 (IRB MAC) → In its ARP reply, the MX Series router includes the following: In this overlay network, irb.1 on the MX Series router receives an ARP request from hostġ. The MX Series router automatically generates the MAC addressĠ0:00:5e:00:01:01 for the default virtual gateway. On the MX Series router, an IRB interface named irb.1 has MAC address 00:05:85:00:53:01Īnd VGA 10.2.1.254. Network also includes three intermediary Layer 2 switches, in this case, EX4300įigure 1: EVPN-VXLAN Centrally-Routed Bridging Overlay Gateways, and four QFX5100 switches function as Layer 2 VXLAN gateways. In this network, an MX Series router and a QFX10000 switch function as Layer 3 VXLAN MAC, in centrally-routed bridging (CRB) overlays you might see unknown unicast packetįor example, consider the EVPN-VXLAN overlay network in Figure 1. When an ARP reply includes the IRB MAC as the source MAC address instead of the virtual The source MAC address field in the outer Ethernet header of:Īddress Resolution Protocol (ARP) replies The Layer 3 gateway doesn't include the automatically generated virtual MAC as the source Virtual gateway MAC address as a virtual MAC. Generates IPv4 media access control (MAC) address 00:00:5E:00:01:01 or IPV6 MAC addressĠ0:00:5E:00:02:01 for that particular virtual gateway. When you configure a VGA for an IRB interface, the Layer 3 gateway automatically Non-virtualized hosts, virtual machines (VMs), and servers in different VXLANs, MPLS Through its IRB interface, the default virtual gateway enables the communication between The device creates a default Layer 3 virtual gateway with the specified IP address. When you configure an IRB interface with a virtual gateway address (VGA), Layer 3 gateway on which you can configure integrated routing and bridging (IRB) In an Ethernet VPN (EVPN) centrally-routed bridging overlay, a device can function as a
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