The documentation set for this product strives to use bias-free language. 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. 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. Learn more about how Cisco is using Inclusive Language.
VxLAN (Virtual eXtensible Local Area Network) GPE (Generic Protocol Extension) is intended to extend the existing VxLAN protocol to provide protocol typing, OAM, and versioning capabilities.
VxLAN GPE tunnel and VxLAN dummy-L2 tunnel do not support IS-IS.
Layer2 traffic is not supported.
IPv6 for underlay encapsulation is not supported.
Information About VxLAN GPE Tunnel and VxLAN Dummy-L2 Tunnel
Virtual eXtensible Local Area Network (VxLAN) defines an encapsulation format that encapsulates Ethernet frames in an outer UDP/IP transport. As data centers evolve, the need to carry other protocols encapsulated in an IP packet is required, and the need to provide increased visibility and diagnostic capabilities within the overlay. The VxLAN header does not specify the protocol being encapsulated and therefore is currently limited to encapsulating only Ethernet frame payload, nor does it provide the ability to define Operations, Administration, and Maintenance (OAM) protocols. In addition, new transports need not use transport layer port numbers to identify tunnel payload, rather it encourages encapsulations to use their own identifiers for this purpose. VxLAN GPE (Generic Protocol Extension) is intended to extend the existing VxLAN protocol to provide protocol typing, OAM and versioning capabilities.
The following are the main features of VxLAN GPE Tunnel:
Encapsulates layer-3 packets directly into a VxLAN tunnel without any layer-2 bridge-domain requirements or dependencies.
Provides an equal-cost multi-path (ECMP) entropy benefits on the underlay (core) network by calculating the outer-source UDP port based on the inner IP protocol, source or destination IP addresses and L4 port numbers (5-tuple).
Leverages VxLAN-GPE draft-IETF, which provides direct upper layer protocols options such as, IPv4, IPv6, Ethernet (MAC), Network-Service-Header (NSH) without a layer-2 header.
Overlay encapsulation is supported for both IPv4 and IPv6, whereas underlay encapsulation is supported only for IPv4.
8K Tunnel interfaces with VxLAN GPE or VxLAN dummy-L2 mode are supported.
Both VxLAN-GPE and VxLAN Dummy-2 are point to point tunnels.
Provides facility to manually configure source port range for GPE tunnel and a Dummy-L2 tunnel.
3-tuple hash is enabled to generate UDP source port for both VxLAN GPE and VxLAN Dummy-L2 tunnels for all the packets.
UDP source port hash uses 3 tuples for fragments, and 5 tuples for non-fragments.
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.|
Feature Name |
Releases |
Feature Information |
|---|---|---|
|
VxLAN GPE Tunnel and VxLAN Dummy-L2 Tunnel |
Cisco IOS XE Denali 16.3.1 |
The following commands were introduced by this feature: vxlan gpe-tunnel-udp-port xxx . |
|
Manually configure the source port range for VxLAN GPE Tunnel and VxLAN Dummy-L2 Tunnel |
Cisco IOS XE Everest 16.5.1b |
The following commands were introduced by this feature:
|
|
Microsoft - VxLAN GPE Tunnel IPv6 Support VxLAN 8K GPE Tunnel Support |
Cisco IOS XE Fuji 16.7.1 |
Overlay encapsulation is supported for both IPv4 and IPv6, whereas underlay encapsulation is supported only for IPv4. 8K Tunnel interfaces with VxLAN GPE or VxLAN dummy-L2 mode are supported. |
|
VXLAN Fragment UDP Source Port |
Cisco IOS XE 16.8.1 |
Global tunnel CLIs are added to enable 3-tuple hash to generate UDP source port for both VxLAN-GPE and VxLAN Dummy-L2 tunnels. Support both global and under interface tunnel. |
How to Configure VxLAN GPE Tunnel and VxLAN Dummy-L2 Tunnel
Configure Vxlan GPE Tunnel on VTEP1.
interface Tunnel1
ip address 192.168.1.1 255.255.255.0
tunnel source GigabitEthernet2
tunnel mode vxlan-gpe ipv4
tunnel destination 20.1.1.17
tunnel vxlan vni 123456
Configure Vxlan GPE Tunnel on VTEP2.
interface Tunnel1
ip address 192.168.1.2 255.255.255.0
tunnel source GigabitEthernet2
tunnel mode vxlan-gpe ipv4
tunnel destination 20.1.1.16
tunnel vxlan vni 123456
Configure Vxlan Dummy-L2 Tunnel on VTEP1.
interface Tunnel0
ip address 192.168.2.3 255.255.255.0
tunnel source GigabitEthernet2
tunnel mode vxlan ipv4 default-mac
tunnel destination 20.1.1.17
tunnel vxlan vni 123456
Configure Vxlan Dummy-L2 Tunnel on VTEP2.
interface Tunnel1
ip address 192.168.2.1 255.255.255.0
tunnel source GigabitEthernet2
tunnel mode vxlan ipv4 default-mac
tunnel destination 20.1.1.16
tunnel vxlan vni 123456
(Optional) Change UDP dst port for Vxlan Dummy-L2 Tunnel. Default UDP port of Dummy-L2 Tunnel is 4789.
(config)#vxlan dummy-l2-tunnel-udp-port 4789(Optional) Change UDP dst port for Vxlan GPE Tunnel. Default UDP port of GPE Tunnel is 4790.
(config)#vxlan gpe-tunnel-udp-port 4790
##show platform software vxlan fp active udp-port
VXLAN UDP Port: 6000
VXLAN GPE Tunnel UDP Port: 4000
VXLAN Dummy L2 Tunnel UDP Port: 6000
VXLAN UDP Source Port Range: 1025 - 65535
VXLAN GPE Tunnel UDP Source Port Range: 1025 - 65535
VXLAN Dummy L2 Tunnel UDP Source Port Range: 1025 – 65535
VXLAN GPE Tunnel UDP Source Port Hash: 3 tuples
VXLAN Dummy L2 Tunnel UDP Source Port Hash: 3 tuples
#interface tunnel0
tunnel mode vxlan ipv4 default-mac | xxxx.xxxx.xxxx xxxx.xxxx.xxxx
#interface tunnel1
tunnel mode vxlan-gpe ipv4
#interface tunnel0
tunnel vxlan vni xxxx
#interface tunnel0
vxlan source-port-hash 3-tuple
vxlan source-port-hash 3-tuple-for-fragments
Configuration Examples for VxLAN GPE Tunnel and VxLAN Dummy-L2 Tunnel
#interface Tunnel0
ip address 192.168.2.1 255.255.255.0
ipv6 address 2001::1/64
tunnel source GigabitEthernet2
tunnel mode vxlan ipv4 default-mac
tunnel destination 20.1.1.16
tunnel vxlan vni 123456
#interface Tunnel1
ip address 192.168.1.2 255.255.255.0
ipv6 address 2002::2/64
tunnel source GigabitEthernet2
tunnel mode vxlan-gpe ipv4
tunnel destination 20.1.1.16
tunnel vxlan vni 123456
#sh pl soft vxlan f0 udp-port
VXLAN UDP Port: 4789
VXLAN GPE Tunnel UDP Port: 4790
VXLAN Dummy L2 Tunnel UDP Port: 4789
VXLAN UDP Source Port Range: 600 - 6000
VXLAN GPE Tunnel UDP Source Port Range: 400 - 4000
VXLAN Dummy L2 Tunnel UDP Source Port Range: 1025 – 65535
VXLAN GPE Tunnel UDP Source Port Hash: 5 tuples
VXLAN Dummy L2 Tunnel UDP Source Port Hash: 5 tuples
|
Related Topic |
Document Title |
|---|---|
|
Cisco IOS commands |
|
Standard/RFC |
Title |
|---|---|
|
draft-ietf-nvo3-vxlan-gpe-02.txt |
Generic Protocol Extension for VXLAN |
|
MIB |
MIBs Link |
|---|---|
|
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: |
|
Description |
Link |
|---|---|
|
The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
Feedback