Questions tagged [vxlan]
For questions about Virtual Extensible LAN (VXLAN), where it is a proposed encapsulation protocol for running an overlay network on an existing Layer 3 infrastructure. For instance, a VM needs to be deployed in a specific layer 2 broadcast domain segment of the network and you need to configure VXLAN to do so.
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What is the best way to connect 2 DC with VXLAN?
If I have 2 standard VxLAN Spine-Leaf setup, what would be the best way to create 1 VXLAN segment out of the 2 DC?
I have 2 WAN links between the Data Centers to interconnect them.
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What exactly is the purpose of/use case for VXLAN? [duplicate]
I understand what it does in that it creates an overlay layer 2 network over an underlay but when would you use it? What is the problem it’s solving?
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Why Chassis MAC Address is used when advertising EVPN Type 5 routes
In case of EVPN Type 5 or IP Prefix routes advertisement why chassis MAC address or router MAC address is used in addition to VXLAN VNI?
I guess VXLAN VNI is working on same principle like MPLS VPN ...
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VXLAN over Wireguard with VLAN-VNI mapping [closed]
I am currently attempting to setup a L2 bridge between two sites using VXLAN to provide the L2 connectivity and Wireguard as transport/L3, eventually with plans to expand it multiple sites.
I've ...
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Geographic or Physical Limitations of VLANs
Is it incorrect to have a layer-2 broadcast domain cross long distances or multiple sites?
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VXLAN working over IGP, but no NVE peers or EVPN routes in BGP
I'm an absolute beginner with NX-OS and VXLAN. I'm trying to set up a very simple configuration for VXLAN/EVPN/BGP. I have one NX-OSv spine and two leaf switches. No VPC, no anycast SVI. The ...
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Juniper QFX5110 - EVPN-VXLAN ethernet switching table is empty as soon as I enable VXLAN
I am trying to replace our existing Virtual Chassis way of doing mutli-chassis LAG with EVPN multi-homing using VXLAN. My understanding is we should be able to replace any LAG we have with evpn-...
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ip-prefix-routes with vxlan encapsulation on Juniper MX80 / MX104 17.3R3
I want to check whether this configuration is acceptable by MX80 or MX104 Junos 17.3R3 (JTAC recommended version)?
Example configuration:
set routing-instances VPN100 instance-type vrf
set routing-...
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Untagged VLAN in EVPN+VxLAN
I am dealing with very strange issue but wanted to check with experts if i am doing anything stupid or not. I have small size EVPN+VxLAN clos network (OSFP+iBGP+Multicast+Arp-suppression (no ...
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How to connect EVPN DC Fabric to MPLS IP VPN Backbone
Let's suppose that we have a common Clos EVPN/VXLAN-based DC fabric with IP gateways on leaves (anycast gateways). Also there is a lot of different IP VRFs inside a fabric where end hosts reside.
What ...
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EVPN VxLAN arp suppression TCAM carving
Deploying Clos design network using leaf Cisco Nexus 9396PX and when trying to configure arp-suppression using tcam carving getting this error
Free up tcam slice from VACL (default vacl tcam is 512)
# ...
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Vxlan with internet access - possible because of high MTU?
So i was wondering, because VXlan requeres a high mtu to work properly (some set it even as high as the max configurable MTU (9000ish)), how would providing internet access for these nodes/servers ...
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Can a leaf (mc-lag switch pair) connect to an uplink (spine : a single switch) using lag (not a route-only-port)?
By 'lag', I mean one port from each mc-lag peer connects to a port each on the uplink switch (consider this a single switch spine). The mc-lag is an active-active forwarding pair for L2 traffic (aruba'...
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How to route traffic via firewall in EVPN + VxLAN
This is what i am trying to design new network, this is just on paper nothing finalized and i am sure it has lots of issue like firewall should be on leaf not border leaf etc. so that is why i am here ...
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Create a VXLAN with MTU = 1500?
I have a cluster of servers interconnected with 10 Gbps fabric interfaces (ens1f0, MTU 1500). I've set up a VXLAN interface across the cluster using default settings (MTU 1450). For reasons of ...
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Does VXLAN always require UDP for encapsulation, cant it just send packet with only IP header as it has VNI?
Does VXLAN always require UDP for encapsulation, cant it just send packet with only IP header?
UDP port 4079 may be required for identification, but is there not any other way to identify, like the ...
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Arista VXLan with QinQ
I've got a weird situation. Three doctors offices are merging in two cities and we are planning on merging them into one building in each city. Due to politics and crappy software each office will ...
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Is it correct to assume that ordering of frames at switch level is not important?
My understanding is that if the payload of the frame contains any data that needs to be reassembled, at least for TCP payload, it can be done at the OS level, once all the packets are received and ...
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Creating an overlay network using ASA and VXLAN over IP MPLS
I need to extend an existing VLAN from a branch LAN to DC. As a matter of fact I noticed that Cisco ASA 5500X have VXLAN capabilities. I am relatively new to VXLAN and I need some help to find the ...
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VXLAN / EVPN Types
Looking into EVPN and the route types (type 2 and 5) is my understanding correct.
In terms of their placement into the relevant forward tables upon the device.
EVPN Route Type 2: MAC/IP Advertisement
...
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EVPN/VXLAN Flood and Learn
With the original VXLAN spec (RFC) there was no control plane.
But Flood and Learn was used via either IR or multicast head-end replication.
EVPN was then introduced as the control plane.
My ...
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Scaling VXLAN tunnels in openvswitch
As we're creating a cluster of tens of KVM host nodes we've chosen openvswitch as our virtual network infrastructure.
So we need to make isolated virtual networks between VMs on demand. I've seen ...
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VMWARE NSX Networking
I have configured in a lab logical switch, distributed router, distributed firewall and everything is work fine.
But then I thing about real live environment I am a little bit confused about VTEPs ...
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VXLAN with selective VNI underly manipulation
We trying to implement an scenario to provide L2 transport services from POP A to POP B, connected with three different carriers transport links. In the future, we may want to implement POP C and have ...
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Anycast Gateways
Can anyone shed light of anycast gateways. Typically Ive seen each pair of leafs within a fabric configured with MCLAG and a different IP used for the gw address across each pair of leafs. However, ...
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Difference between L2 VPN and L3VPN. How EVPN used with VxLAN and MPLS?
I am new to VPN technology and trying to connect and get the bigger picture after going through lot of online documents.
Here are my confusions:
Differences between L2 VPN and L3 VPN. It would be ...
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Are there any Virtual Switch concepts besides vLAN, Virtual Switch, Virtual Distributed Switch, and Logical Switch?
While self-studying for a VMware Associate Certificate I'd see the phrase "Logical Switch" pop up from time to time, at first I figured it was a synonym for a virtual switch.
Then I ran into a ...
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Can VXLAN solve broadcast storm problem?
For example, we have small DC1 and decide to make another DC2 in 20km far from DC1 and connect these DCs via dark fiber.
For VM Mobility we should extend L2 segment between these DC.
I know, that is ...
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EVPN/VXLAN RD & RT
I was reading through this example on Juniper's EVPN/VXLAN documentation and I can't understand why I need two different Route-Distinguishers and Route-Targets.
The RD & RT in the VRF instance is ...
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VXLAN ingress replication limitations?
I've been trying to search for data on the scaling figures of the various network ASICs with regards to the maximum number of remote VTEPs they can handle when doing ingress-replication (a.k.a. Head-...
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VXLAN vs VLAN over layer 3
I read that one of the benefits of VXLAN over VLAN is that it can spawn across WAN and multiple layer 3 networks by creating overlay layer 2 networks.
However AFAIN VLAN can also do the same using ...
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VXLAN on top of EIGRP/I-BGP
for labbing purposes, I have two NX-9000 that's connected to each other via EIGRP. Trying to have one as Spine switch and the other as Leaf switch.
No redundancy/HA needed at the moment
Could you ...
user10221
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VXLAN Protocol introduction
[RFC 7348] about VXLAN in the introduction says:
Data centers are often required to host multiple tenants, each with
their own isolated network domain. Since it is not economical to
realize ...
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Provide L3 gateways in a multi-tenant VXLAN environment with ASR9K and N9K
I'm trying to make a PoC about VXLAN, and I have a design issue.
I have one c3750 per client, each 3750 is connected to an N9K with a single fiber (per client).
So each N9Ks are connected to multiple ...
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How does VxLAN 24 bit propagates back to Vlan 12 bit after de-encapsulation?
Question is related to Data Center Inter-connectivity.
I wanted to inquire about how does 24 bit VxLAN propagates in Data Center Inter Connect. I am familiar with overview of encapsulation in VTEP.
...
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In‐band Network Telemetry (INT)
I have read this about INT and was wondering... where is all the INT data saved?
Is it in the packet metadata? and if so, does metadata count as a part of the total packet length?
I know metadata isn'...
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How do I determine the IPV6 address added to VXLAN when interface is set to up? [closed]
Setup:
Currently working on a machine with Red Hat 7.2 (Red Hat Enterprise Linux Server release 7.2 (Maipo) to be exact.)
I have a vxlan interface configured:
# ip link add test.123 type vxlan dev ...
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Regarding VxLAN Encapsulation
I am reading up on VxLAN and understand the encapsulation process somewhat as below:
Step1: Take your original Ethernet frame.
Step2:Put it inside VxLAN encapsulation.
Step3:VxLAN should then go ...
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How to encapsulate all VLAN traffic inside VXLAN
As I understand VXLAN, it looks like it should be able to encapsulate and properly route VLAN-tagged traffic.
However, in investigating how to actually configure VXLAN on network devices, it looks ...
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Change MTU without infrastructure change
It's very strange issue, on openstack cluster we have VxLAN between network and compute node and its using 1450 MTU (1500-50) because of encap header. Because of it some of my application not working ...
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Tunnelling difference over VXLAN vs NVGRE vs GENEVE [closed]
Any bullet points that are most imp points when it comes differences between these three tunnellings VXLAN/NVGRE/GENEVE in networks.
Found some notes here, anything that you may like to add would be ...
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VxLAN - mac table entries in a TOR switch
It is a basic question.
Assume 2 physical machines in two different subnets. VxLAN is configured on 2 TOR switches housing these machines in different subnets in different racks.
Host A IP: IP-A ...
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L3 leaf-spine architecture and DHCP ip assignment
Background: we are planning to have a L3 leaf spine network with TOR(redundant mlag) and spine switch.
Each TOR is on a specific subnet and run bgp with spine. Now, what is the recommendation to run ...
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VxLAN optional outer 802.1Q purpose?
So, I've been checking Google along with the RFC 7348 about VxLAN functionality. I believe I do have a good grasp of what the purpose of the protocol is, what it does and how it does it etc but I fail ...
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setup VXLAN forwarding to multiple destination on Linux [closed]
I can't setup forwarding of all zero (unknown, I assume)/multicast ethernet frames to multiple unicast IPs (virtual tunnel endpoints), although it seems that it should be supported (also mentioned ...
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VXLAN: how receiver knows that the received packet is VXLAN-encapsulated?
I'm trying to understand how a receiver knows that the received packet is a VXLAN-encapsulated.
Looking at the VXLAN RFC, I can't see anything specific that defines that the packet contains VXLAN ...
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How vlan and vxlan achieves virtual machine mobility
Could you give an example for both of these mechanisms? I understand what vlan/vxlan is but am really confused when mobility kicks in. A vivid example is more than welcome.
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