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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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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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133 views

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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2answers
177 views

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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1answer
148 views

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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1answer
129 views

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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1answer
50 views

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 ...
4
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1answer
112 views

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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2answers
1k views

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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1answer
4k views

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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1answer
104 views

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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2answers
678 views

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 ...
3
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1answer
362 views

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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1answer
224 views

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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2answers
8k views

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 ...
3
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1answer
545 views

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 ...
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3answers
162 views

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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1answer
430 views

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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1answer
396 views

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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3answers
224 views

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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2answers
259 views

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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5answers
3k views

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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2answers
4k views

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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1answer
261 views

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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0answers
2k views

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 ...
2
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1answer
332 views

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 ...
4
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1answer
362 views

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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1answer
416 views

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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1answer
1k views

setup VXLAN forwarding to multiple destination on Linux

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 ...
3
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1answer
7k views

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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2answers
1k views

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.