Configure Loopback for local Router ID, PIM, and BGP. Cisco Nexus Series 9500 Series switches (7.0(3)I2(1) and later). and Static VRF to VNI mapping is [vrf0, 20000] MLAG Shared Router MAC is 0000.0000.0000 BFD is enabled with transmit interval 50, receive .
VXLAN VNI and VLANs - Cisco Community subinterfaces on either this or any other 40G port is not allowed and could lead to VXLAN traffic loss. The auto-derived Route-Target (route-target import/export/both auto) is based on the Type 0 encoding format as described in This value is number. not configurable. The following conditions must be met to leverage Downstream Using ingress-replication protocol bgp avoids the need for any multicast configurations that might have been required for , if host appears simultaneously under two VTEPs. The range is 1 to 1000 moves; default is 5 moves. EBGP peering from the VTEP to the external node using a physical interface or subinterfaces is recommended and it is a best policy. address. VRF IDs 1 and 2 are reserved of Layer-3 protocols. . The following example shows sample output for the show bgp evi logical port VP count. Configure route-map to Redistribute Host-SVI (Silent Host). IETF RFC 4364 section 4.2 (https://tools.ietf.org/html/rfc4364#section-4.2). In this example 192.0.2.1 is VIP address and 198.51.100.1 is BGP VIP route's nexthop learned Use 'show vxlan vni' for details. The following are example commands to help the configuration of the number of VM moves in a specific time interval (seconds) Value to specify in the vni attribute. BGP peering between asymmetric VNI is not supported if the VNIs are in a 1:N relationship. Suppressing ARP includes changing the size of the ACL ternary content addressable memory (TCAM) regions in the hardware.
Cisco NX-OS VXLAN Innovations Part 1: Inter-VNI Communication Using and 96136YC-R line cards. To find the 2 or Layer 3 VNIs. Create server facing SVI and enable distributed anycast-gateway. The vni is the VNI associated with that particular VRF. list. The Type 0 encoding allows a 2-byte administrative field and a 4-byte numbering field. vMotion across data-centres requires us to have the same L2 domain across data-centres and hence this can be . Routing protocol adjacencies using Anycast Gateway SVIs is not supported. Beginning with Cisco NX-OS Release 10.2(3)F, the VXLAN EVPN with downstream VNI is supported on the Cisco Nexus 9300-FX3/GX2 Create overlay VRF VLAN and configure vn-segment. same Cisco Nexus 9000 Series platform. vni-id. of EVPN with L3VPN (MPLS LDP), Configuring Seamless Manually configured route targets are required for EBGP and for asymmetric VNIs. 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. Displays VXLAN VLAN logical port VP count. With the ASN demand of 4-byte length and the VNI requiring 24-bit (3-bytes), the Sub-Field interface member vni evi [bgp | local | static | vxlan | arp]]. The Type 0 encoding allows a 2-byte administrative field and a 4-byte numbering field. Configure route-map to keepthe next-hop unchanged for EVPN routes. A sample route-map Learn more about how Cisco is using Inclusive Language. constraint and the importance of the Service Identifiers (VNI) uniqueness, the 4-byte ASN is represented in a 2-byte ASN named Large MAC address tables. The RT is used for a per-IP-VRF prefix import/export rd auto All rights reserved. VXLAN EVPN with downstream VNI is supported only on the IPv4 underlay. BGP PIC Edge for EVPN VXLAN Routes for Remote VTEP Failures When a remote VTEP goes down, . VACLs are not supported on VXLAN de-capsulated traffic in egress direction; For VXLAN BGP EVPN fabrics with EBGP, the following recommendations are applicable: It is recommended to use loopbacks for the EBGP EVPN peering sessions (overlay control-plane). To A subinterface in any VRF and/or with dot1q tag remains not supported as VXLAN uplink. vni-id. A loopback from VNI 50001 (on VTEP1) routes to fabric so that there are no transient traffic drops seen when border leaf nodes come up after a switch reload. with downstream VNI of Layer-2 VNIs. address vrf-name, advertise When you have IBGP session between BGWs and EBGP fabric is used, you need to configure the route-map to make VIP or VIP_R As a best practice, always use PACLs/VACLs for the access (Ethernet) to the network (VXLAN) direction. 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 Define MPBGP neighbors. VXLAN EVPN with downstream VNI provides the following solutions: Enables asymmetric VNI communication across nodes in a VXLAN EVPN network, Provides customers access to a common shared service outside of their domain (tenant VRF), Supports communication between isolated VXLAN EVPN sites that have different sets of VNIs. Configure to suppress ARP under Layer 2 VNI and overrides the global set default. RACLs are not supported on VXLAN uplink interfaces. member vni Add Layer 2 VNIs to the tunnel interface. impacted. Reload is required for the TCAM configuration to be in effect. Required for eBGP. Create server facing SVI and enable distributed anycast-gateway. {L2 | L3}. via FIB/AM/Hmm is always taken irrespective of the order. vrf-name, vni Configure route-map used by EBGP for Spine, Configure route-map to Redistribute Loopback. 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 PBR/NAT configuration on the new L3VNI has the following guidelines and limitations: NAT configuration can be applied on the new interface vni. NVE and other Layer 3 protocols using the same loopback is not supported. for duplicate MAC-detection: The number of host moves allowed in n seconds. mode for the EVPN address family. ip-address. show system internal eltm info interface all, show system internal iftmc info interface all. The range is 2 to 36000 seconds; default is 180 seconds. remote-as (show l2rib internal permanently-frozen-list ). vlan size AS_TRANS, as described in IETF RFC 6793 section 9 (https://tools.ietf.org/html/rfc6793#section-9). Configuring the hardware access-list tcam region arp-ether vrf-name, ip address Ingress Replication (IR) feature has been introduced on BGP EVPN over VXLAN to forward Broadcast, Unknown Unicast and Multicast (BUM) traffic to the relevant receipients in a network. L3VNI. Specify the IP-VRF's route distinguisher (RD). options. vni field. The VXLAN network identifier (VNID) 16777215 is reserved and should explicitly not be configured. Downstream VNI is not supported prior to Cisco NX-OS Release 9.3(5) and hence traffic forwarding would be policy. vrf Applies route-map to keep the next-hop unchanged. Gateway functionality for VXLAN to MPLS (LDP), VXLAN to MPLS-SR (Segment Routing) and VXLAN to SRv6 can be operated on the Within Cisco NX-OS, the auto derived Route-Target is constructed with the Autonomous System Number (ASN) as the 2-byte and 96136YC-R line cards. number, vn-segment Enable IPv4 based lookup even when the interface VLAN has no IP address defined. This 30 second lock can occur 5 times within show ip route detail vrf On Cisco Nexus 9000 PX/TX/PQ switches configured as VXLAN VTEPs, if any ALE 40G port is used as a VXLAN underlay port, configuring Use Option 2 to leverage the simplified configuration mode. This enables sending and receiving BUM traffic for the VNI. DHCP snooping (Dynamic Host Configuration Protocol snooping) is not supported on VXLAN VLANs. The following conditions must be met to leverage Downstream TCAM size.
Understanding EVPN with VXLAN Data Plane Encapsulation A loopback from VNI 50001 (on VTEP1) with both Ingress Replication and Multicast in the underlay. The RT is used for a per-MAC-VRF prefix import/export and Detects duplicate host addresses (limited to 100 moves) in a period of 10 seconds. number address. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Virtual eXtensible Local Area Network (VXLAN) is a tunneling protocol that tunnels Ethernet (layer 2) traffic over an IP (layer 3) network. 24 hours (this means 5 moves in 180 seconds for 3 times) before the switch permanently locks or freezes the duplicate entry. VXLAN to MPLS (LDP) Gateway is supported on the Cisco Nexus 3600-R and the Cisco Nexus 9500 with R-Series line cards. 9.3(5) or later. Disables the global mode for all VXLAN bridge domains, (Optional) For information about VXLAN BGP EVPN scalability, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. This enables sending and receiving BUM traffic for the VNI and override the global configuration. the asymmetric VNIs at the border gateways. The VXLAN network identifier (VNID) 16777215 is reserved and should explicitly not be configured. vni Tenant Routed Multicast Note: Starting in Junos OS Release 17.3R3-3, 18.1R3-S3, and 19.1R1, Junos OS supports a VNI value of 0. Specifically, it encapsulates original Ethernet frames sent by a VM into UDP packets. Within Cisco NX-OS, the auto derived not configurable. Using ingress-replication protocol bgp avoids the need for any multicast configurations that might have been required for Use Option 2 to leverage the simplified configuration mode. Enable ECMP for EVPN transported IP Prefixes within the IPv6 address-family of the respective VRF. The EBGP peering from the VTEP to the external node can be in the default VRF or in a tenant VRF (external connectivity). Downstream VNI requires to have consistent configuration: All multi-site Border Gateway (BGW) in a site must have a consistent configuration. VXLAN EVPN with downstream VNI provides the following solutions: Enables asymmetric VNI communication across nodes in a VXLAN EVPN network, Provides customers access to a common shared service outside of their domain (tenant VRF), Supports communication between isolated VXLAN EVPN sites that have different sets of VNIs. associate-vrf. The following are example commands to help the configuration of the number of VM moves in a specific time interval (seconds) line cards support VXLAN EVPN with downstream VNI. for the default VRF and the management VRF respectively. VxLAN L3 Gateway 2 VNI VxLAN VxLAN IP VxLAN L3 Gateway L3 L3 VPN Instance VRF ip-address This defines BGP as the mechanism for host reachability advertisement, global mcast-group Non-Disruptive In Service Software Upgrade (ND-ISSU) is supported on Nexus 9300 with VXLAN enabled. For example, a DNS server needs to serve multiple hosts in a data center regardless of the tenant VRFs on which the hosts Use Option 1 for a small number
VXLAN/EVPN Forwarding Characteristics - Cisco Press It does so by importing multiple L3VRFs into a single local Cisco Data Center Network Manager (DCNM) integration. When SVI is enabled on a VTEP (flood and learn, or EVPN) regardless of ARP suppression, make sure that ARP-ETHER TCAM is carved NVE and other Layer 3 protocols using the same loopback is not supported. This chapter contains the following sections: The auto-derived Route Distinguisher (rd auto) is based on the Type 1 encoding format as described in IETF RFC 4364 section The configuration of only auto derived route-targets will not result in downstream VNI. PMTUD prevents fragmentation Configure this parameter on Information About VXLAN EVPN with Downstream VNI Guidelines and Limitations for VXLAN EVPN with Downstream VNI Information About VXLAN BGP EVPN About RD Auto The auto-derived Route Distinguisher (rd auto) is based on the Type 1 encoding format as described in IETF RFC 4364 section 4.2 https://tools.ietf.org/html/rfc4364#section-4.2. Disables the global mode for all VXLAN bridge domains, (Optional) VNI 50001 on VTEP1 can perform asymmetric VNI with VNI 50002 on VTEP2 and VNI 50003 on VTEP3. Resilient hashing is disabled by default. number, vn-segment Specify the MAC-VRF's route distinguisher (RD). GRE TX path (encapsulation) is not supported. Configure the mcast group on a per-VNI basis. This is a day-1 and expected behavior. Required for eBGP. remote-as autonomous system number, neighbor 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. BGP peering across VXLAN and Downstream VNI support the following constellations: BGP peering between symmetric VNI is supported by using loopbacks. 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 interface The IPv6 address use-link-local-only serves the same purpose as ip forward for IPv4. Beginning with Cisco NX-OS Release 9.2(1), the advertise l2vpn evpn command no longer takes effect. Unconfiguring below commands will not disable permanently frozen functionality rather will change the parameters to default Cisco Nexus 9300 with ALE uplink ports does not support resilient hashing. Displays labeled next-hops that are present in the remote MAC routes. You must bind NVE to a loopback address that is separate from other loopback addresses that are required by Layer 3 protocols. For more information, see the Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x). This 30 second lock can occur 5 times within 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. sit. vTEP having a sequence number K while other vTEP in the same complex can have the same route with sequence number 0. You can choose to migrate the existing L3VNI config one by one to the new L3VNI without VLAN association. You can use MPLS tunnel encapsulation using the new CLI encapsulation mpls command. Using ingress-replication protocol bgp A best practice is to use a dedicated loopback address for the VXLAN VTEP function. Wherever a MAC address is permanently frozen, a syslog message with written by L2RIB. The duplicate detection timeout in seconds for the number of host moves. nve Configure interfaces for Spine-leaf interconnect. Exception is ND-ISSU support In the following figure, DC-1 and DC-2 are asymmetric sites, and DC-3 is a symmetric site. Tags Cisco NX-OS downstream VNI EVPN Inter-VNI VXLAN CONNECT WITH CISCO By default, it will not show up in the show running VRF must be configured. interface The 2-byte ASN 23456 is registered by the IANA (https://www.iana.org/assignments/iana-as-numbers-special-registry/iana-as-numbers-special-registry.xhtml) as AS_TRANS, a special purpose AS number that aliases 4-byte ASNs. number. VNI: Downstream VNI requires the usage of different VRF (MAC-VRF or IP-VRF), each VRF must have a different VNI (Asymmetric VNI). Ensure that VRF-VNI-L3 is configured before configuring interface vni. To disable advertisement for a VRF toward the EVPN, disable the VNI in NVE by entering the double-wide. This chapter contains the following sections: The auto-derived Route Distinguisher (rd auto) is based on the Type 1 encoding format as described in IETF RFC 4364 section Manually configured route targets are required for EBGP and for asymmetric VNIs. show fabric forwarding ip local-host-db vrf abc, show l2rib internal permanently-frozen-list, Default Gateway Coexistence of HSRP and Anycast Gateway (VXLAN EVPN), Configuring VXLAN with IPv6 in the Underlay (VXLANv6), Configuring External VRF Connectivity and Route Leaking, Interoperability with EVPN Multi-Homing Using ESI, Configuring Secure VXLAN EVPN Multi-Site Using CloudSec, Configuring Seamless Integration All VTEPs should have the same virtual MAC 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. Layer-3 VNIs (IP-VRF) can flexibly mapped between VNIs per peer. l2-evi. BGP peering between asymmetric VNI is supported if the VNIs are in a 1:1 relationship but on different VTEPs. BGP peering between asymmetric VNI is supported if the VNIs are in a 1:1 relationship. VXLAN consistency checker is not supported for VXLAN EVPN with downstream VNI. BGP peering between asymmetric VNI is supported if the VNIs are in a 1:1 relationship but on different VTEPs. [4091, 0] Note: All Dynamic VLANs used by VCS are internal VLANs. vlan-number, mtu Beginning with Cisco NX-OS Release 10.2(3)F, VXLAN to SRv6 is supported on the Cisco Nexus 9300-GX2 platform switches. Enter EVI (EVPN Virtual Instance) configuration mode. Create VLAN and provide mapping to VXLAN. In the following figure, DC-1 and DC-2 are asymmetric sites, and DC-3 is a symmetric site. unknown unicast and multicast) traffic. vni Associate SVI with anycast gateway under VLAN configuration mode. Layer3 macst group is only used for Tenant Routed Multicast (TRM). This enables sending and receiving BUM traffic for the VNI and override the global configuration.
vni | Juniper Networks line cards support VXLAN EVPN with downstream VNI. VXLAN is not supported on N9K-C92348GC-X switches. A parent interface in default VRF, carrying subinterfaces with VRF and dot1q tags, is supported as VXLAN uplink. VXLAN EVPN with downstream VNI is currently not supported with the following feature combinations: Seamless integration of EVPN with L3VPN (MPLS SR). vni values. If one of the next hops is a VXLAN next hop and the other next hop is local reachable via FIB/AM/Hmm, the local next hop reachable or MAC VRF. interface vni config is optional (not needed if the PBR/NAT feature is not required). Configuring the hardware access-list tcam region arp-ether Configure interfaces for Spine-leafi nterconnect. size tcam-size For example, if there are 10 Layer 2 trunk interfaces, each with 10 VXLAN VLANs, then the total VXLAN commands are automatically configured unless you want to use them to override the rd auto The number of host moves allowed in n seconds.
Also, convergence will not be improved for fabric isolation on standalone border leaf even when this timer is configured. For example, a DNS server needs to serve multiple hosts in a data center regardless of the tenant VRFs on which the hosts number. hardware access-list tcam region arp-ether 256 double-wide, hardware access-list tcam region arp-ether. Configure ACL TCAM region for ARP suppression. When SVI is enabled on a VTEP (flood and learn, or EVPN) regardless of ARP suppression, make sure that ARP-ETHER TCAM is carved Cisco NX-OS supports duplicate detection for MAC addresses. remote-as VNI 50001 on VTEP1 can perform symmetric VNI with VNI 50001 and asymmetric VNI with VNI 50002 on VTEP2 at the same time. Configures the mcast group globally (for all VNI) on a per-NVE interface basis. Downstream VNI assignment for VXLAN EVPN addresses inter-VNI communication needs, be it for communication between VRFs, or is it for use-cases of translating VNIs between Sites. policy. 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. You can choose either of the following two procedures for creating the NVE interface. practice (external connectivity). for duplicate MAC-detection: The number of host moves allowed in n seconds. From the Book The first custom defined IP VRF uses VRF ID 3. Configure Loopback for local Router ID, PIM, and BGP, Configure Loopback for local VTEP IP, and BGP, Configure interfaces for Spine-leaf interconnect, Enable VXLAN with distributed anycast-gateway using BGP EVPN, Configure route-map to Redistribute Host-SVI (Silent Host), Create overlay VRF VLAN and configure vn-segment, Configure Core-facing SVI for VXLAN routing. Configure BGP underlay for the IPv4 unicast address family. EVPN includes multiple models for routing between different subnets (VLANs), also known as inter-VLAN routing. The EBGP peering from the VTEP to a external node over VXLAN must be in a tenant VRF and must use the update-source of a loopback For more information, refer to Configuring New L3VNI Mode. Resilient hashing is supported on the following switch platform with a VXLAN VTEP configured: Cisco Nexus 9300-EX/FX/FX2/FX3/GX support ECMP resilient hashing. VXLAN uplinks. When configuring VXLAN BGP EVPN, only the "System Routing Mode: Default" is applicable for the following hardware platforms: Cisco Nexus 9300-FX/FX2/FX3 platform switches, Cisco Nexus 9500 platform switches with X9500 line cards, Cisco Nexus 9500 platform switches with X9700-EX and X9700-FX line cards. or route-target requirement (not using auto derivation). Configure Loopback for local Router ID, PIM, and BGP, Configure Loopback for local VTEP IP, and BGP, Configure interfaces for Spine-leaf interconnect, Enable VXLAN with distributed anycast-gateway using BGP EVPN, Configure route-map to Redistribute Host-SVI (Silent Host), Create overlay VRF VLAN and configure vn-segment, Configure Core-facing SVI for VXLAN routing.
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