Cisco Nexus supports Type-6 EVPN routes (for IPv4) based on earlier version of draft-ietf-bess-evpn-igmp-mld-proxy draft, where SMET flag field is set as optional. Gateway functionality for VXLAN to MPLS (LDP), VXLAN to MPLS-SR (Segment Routing) and VXLAN to SRv6 can be operated on the Create server facing SVI and enable distributed anycast-gateway. VXLAN EVPN with downstream VNI is supported only on the IPv4 underlay. vrf command: The following example shows sample output for the show ip route detail vrf Downstream VNI is not supported prior to Cisco NX-OS Release 9.3(5) and hence traffic forwarding would be commands are automatically configured unless one or more are entered as overrides. Assigns a route map for IPv4 or IPv6 policy-based routing to L3VNI interface. Disables the global mode for all VXLAN bridge domains, (Optional) Configure to suppress ARP under Layer 2 VNI and overrides the global set default. Default setting (5 moves in 180 in seconds). (VNI) for the 4-byte numbering field. Configure distributed gateway virtual MAC address. This enables the detection of duplicate IP addresses based on the VXLAN, or Virtual Extensible LAN, is a network virtualization technology widely used on large Layer 2 networks. The shut/no shut command is not allowed on interface vni. VXLAN EVPN with downstream VNI supports asymmetric VNI allocation. Only EBGP peering between a VTEP and external nodes (Edge Router, Core Router or VNF) is supported. Route-Target is constructed with the Autonomous System Number (ASN) as the 2-byte administrative filed and the Service Identifier IETF RFC 4364 section 4.2 (https://tools.ietf.org/html/rfc4364#section-4.2). Bind the NVE source-interface to a dedicated loopback interface and do not share this loopback with any function or peerings VXLAN is not supported on N9K-C92348GC-X switches. Spanning-tree blocks any redundant links to avoid loops. After the 5th move within 180 seconds, the switch starts a 30 second lock (hold down timer) before checking to see if the or Disables the global mode for all VXLAN bridge domains, (Optional) Map VLAN to VXLAN VNI to configure Layer 2 VNI under VXLAN VLAN. Instead of a mcast group, ingress replication can be configured. number of moves in a given time-interval (seconds), if host appears simultaneously under two VTEPs. Cross Connect. All three VTEPs have different VNIs configured for the same IP VRF Configure interfaces for Spine-leaf interconnect. show ip route detail vrf You can choose either of the following two options for creating the NVE interface. with downstream VNI of Layer-2 VNIs. Static VRF to VNI mapping is [vrf0, 20000] MLAG Shared Router MAC is 0000.0000.0000 BFD is enabled with transmit interval 50, receive . Create VLAN and provide mapping to VXLAN. Add Layer 2 VNIs to the tunnel interface. router bgp In a VXLAN EVPN setup that has 2K VNI scale configuration, the control plane down time may take more than 200 seconds. address. double-wide command is not required for Cisco Nexus 9200, 9300-EX, and 9300-FX/FX2/FX3 and 9300-GX platform switches. VXLAN to MPLS-SR Gateway is supported on the Cisco Nexus 9300-FX2/FX3/GX and Cisco Nexus 9500 with R-Series line cards. VXLAN EVPN with downstream VNI has the following guidelines and limitations: Cisco Nexus 9332C, 9364C, 9300-EX, and 9300-FX/FX2/FXP platform switches and Cisco Nexus 9500 platform switches with -EX/FX Any existing VRF configuration will not be removed. This applies and gets inherited s to all Layer policy. Bidirectional Forwarding Detection (BFD) Centralized Route Leak. 99-122 bytes; packet drops might be experienced. As a result of the length and format Multiple Tunnel Encapsulations (VXLAN, GRE and/or MPLS, static label or segment routing) can not co-exist on the same Cisco unknown unicast and multicast) traffic. Displays the egress VNI or downstream VNI for each NVE adjacency. import 2023 Cisco and/or its affiliates. Examples of an auto derived Route-Target (RT): IP-VRF within ASN 65001 and L3VNI 50001 - Route-Target 65001:50001, MAC-VRF within ASN 65001 and L2VNI 30001 - Route-Target 65001:30001. Exception is ND-ISSU support number, vn-segment Range: 0 through 16,777,215. IETF RFC 4364 section 4.2 (https://tools.ietf.org/html/rfc4364#section-4.2). vni To size Cisco Nexus 9300 with ALE uplink ports does not support resilient hashing. Configure ACL TCAM region for ARP suppression. (Default number of moves is 5 moves. number Required for eBGP. autonomous system number, neighbor VXLAN EVPN ingress replication is supported on: Cisco Nexus Series 9300 Series switches (7.0(3)I1(2) and later). Create the network virtualization endpoint (NVE) interface. nve Beginning with Cisco NX-OS Release 9.2(1), auto derived Route-Target for 4-byte ASN is supported. A loopback from VNI 50001 (on VTEP1) map-name. Within Cisco NX-OS, the auto-derived address For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. VxLAN L3 Gateway 2 VNI VxLAN VxLAN IP VxLAN L3 Gateway L3 L3 VPN Instance VRF Configure this parameter on Only GRE RX path (decapsulation) is supported. In the following figure, Tenant VRF A in Leaf-1 can communicate with Tenant VRF A in Leaf-2. VXLAN is supported on Cisco Nexus 9500 platform switches with the following line cards: Cisco Nexus 9500 platform switches with 9700-EX or -FX line cards support 1G, 10G, 25G, 40G, 100G and 400G for VXLAN uplinks. address RACLs are not supported on VXLAN uplink interfaces. VXLAN EVPN with downstream VNI. NVE and other Layer 3 protocols using the same loopback is not supported. address, neighbor The hardware access-list tcam region arp-ether 256 double-wide command is not needed for Cisco Nexus 9300-EX and 9300-FX/FX2/FX3 and 9300-GX platform switches. Cisco Data Center Network Manager (DCNM) integration. AS_TRANS, as described in IETF RFC 6793 section 9 (https://tools.ietf.org/html/rfc6793#section-9). PBR/NAT configuration on the new L3VNI has the following guidelines and limitations: NAT configuration can be applied on the new interface vni. Displays VXLAN VLAN logical port VP count. system nve infra-vlans). length within the Extended Community is exhausted (2-byte Type and 6-byte Sub-Field). Only for EBGP deployment cases: Allows duplicate autonomous system (AS) numbers in the AS path. for the 2-byte numbering field (VRF ID). can peer with a loopback in VNI 50002 (on VTEP2). PBR config syntax on the new L3VNI is similar to SVI interface. values. or MAC VRF. You must bind NVE to a loopback address that is separate from other loopback addresses that are required by Layer 3 protocols. All vPC members in a vPC domain must have consistent configuration. The Type 0 encoding allows a 2-byte administrative field and a 4-byte numbering field. l2vpn router bgp VXLAN establishes a logical tunnel between the source and destination network devices, through which it uses MAC-in-UDP encapsulation for packets. This defines BGP as the mechanism for host reachability advertisement, global mcast-group In earlier releases, the VNI configuration must be consistent It enables the switch to perform an IP are using the same AS but the spines have a different AS than leafs. associated to the shared services VRF is different from the L3VNI associated to the tenant VRF. vni | Juniper Networks replication list. The Cisco Nexus 9200 platform switches with Application Spine Engine (ASE2) have throughput constrains for packet sizes of Virtual eXtensible Local Area Network (VXLAN) is a tunneling protocol that tunnels Ethernet (layer 2) traffic over an IP (layer 3) network. Simultaneous availability of host under two VTEPs is detected by host mobility logic with 600 msec refresh timeout for IPv4 Using VXLAN Routing with EVPN Through Asymmetric or Symmetric Models for the IP-VRF or the MAC-VRF: The 2-byte numbering field for the IP-VRF uses the internal VRF ID starting at 1 and increments. When two next hops are enabled, next hop ordering is not maintained. The RT is used for a per-IP-VRF prefix import/export The IPv6 address use-link-local-only serves the same purpose as ip forward for IPv4. show nve peers control-plane-vni peer-ip Enable IPv4 based lookup even when the interface VLAN has no IP address defined. interface The import of a foreign VRFs static configured route-target is supported. associate-vrf. Downstream VNI is not supported prior to Cisco NX-OS Release 9.3(5) and hence traffic forwarding would be Within Cisco NX-OS, the auto-derived number, router-id Directly/locally connected next hops are always given priority over remotely connected next hops. Beginning with Cisco NX-OS Release 9.3(7), Cisco Nexus 9300-GX platform switches support VXLAN EVPN with downstream VNI. GRE TX path (encapsulation) is not supported. number. For Multi-AS environments, the Route-Targets must either be statically defined or rewritten to match the ASN portion of the With the ASN demand of 4-byte length and the VNI requiring 24-bit (3-bytes), the Sub-Field You need to configure the VXLAN uplink with ip unreachables in order to enable Path maximum transmission unit (MTU) discovery (PMTUD) in a VXLAN set up. Configure the BGP overlay for the EVPN address family. This enables sending and receiving BUM traffic for the VNI. downstream VNI - Cisco Blogs This means that vrf-name. evpn. or VXLAN BGP EVPN - Why VLAN for L3 VNI? - Cisco Community Config-replace and rollback are supported. Create server facing SVI and enable distributed anycast-gateway. The size has to be a multiple of 256. VNI 50001 on VTEP1 can perform asymmetric VNI with VNI 50002 and VNI5003 on VTEP2 at the same time. The VTEP and the SVI for this VLAN have to be properly configured for the distributed Anycast Gateway operation, for remote-as for the IP-VRF or the MAC-VRF: The 2-byte numbering field for the IP-VRF uses the internal VRF ID starting at 1 and increments. Step 3 to step 6 are optional for configuring the VRF for VXLAN Routing and are only necessary in case of a custom route distinguisher For information about VXLAN BGP EVPN scalability, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. iBGP sessions between vPC peer nodes in a VRF is not supported. VLAN logical port VP count is 10*10 = 100. show l2route evpn mac [all | evi show system internal eltm info interface all, show system internal iftmc info interface all. DHCP snooping (Dynamic Host Configuration Protocol snooping) is not supported on VXLAN VLANs. fabric forwarding anycast-gateway-mac You can use MPLS tunnel encapsulation using the new CLI encapsulation mpls command. VRF must be configured. The following are example commands to help the configuration of the number of VM moves in a specific time interval (seconds) l2-evi command: The following example shows sample output for the show forwarding adjacency nve platform command: The following example shows sample output for the show forwarding route vrf Cisco Nexus 9200 and 9300-EX/FX/FX2/FX3 and -GX support 1G, 10G, 25G, 40G, 100G and 400G for VXLAN uplinks. VNI 30001 on VTEP1 cannot perform asymmetric VNI with VNI 30002 and VNI 3003 on VTEP2 at the same time. A sample route-map By default, it will not show up in the show running Integration of EVPN with L3VPN (MPLS SR), Configuring Seamless Integration of EVPN with L3VPN SRv6, Configuring Seamless Integration of EVPN (TRM) with MVPN, Configuring Layer 4 - Layer 7 Network Services Integration, Configuring Proportional Multipath for VNF, Guidelines and Limitations for VXLAN BGP EVPN, Information About VXLAN EVPN with Downstream VNI, Guidelines and Limitations for VXLAN EVPN with Downstream VNI, Configuring SVI for Core-facing VXLAN Routing, Configuring SVI for Host-Facing VXLAN Routing, Configuring the NVE Interface and VNIs Using Multicast, Configuring VXLAN EVPN Ingress Replication, Duplicate Detection for IP and MAC Addresses, Verifying the VXLAN BGP EVPN Configuration, Verifying the VXLAN EVPN with Downstream VNI Configuration, Example Show Commands, https://tools.ietf.org/html/rfc4364#section-4.2, https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/command_references/configuration_commands/b_N9K_Config_Commands_703i7x/b_N9K_Config_Commands_703i7x_chapter_010010.html#wp4498893710, https://tools.ietf.org/html/rfc6793#section-9, https://www.iana.org/assignments/iana-as-numbers-special-registry/iana-as-numbers-special-registry.xhtml, Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), Cisco Nexus 9000 Series NX-OS Label Switching Configuration Guide, Release 9.3(x), Cisco Nexus 9000 Series NX-OS Security Configuration Guide, Release 9.3(x), Cisco Nexus 9000 Series NX-OS Verified Scalability Guide, Cisco Nexus 9000 Series NX-OS Security Configuration Guide.
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