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Cisco SD-WAN
Product Documentation
Viptela Documentation

interface gre

vpn interface gre—Configure a GRE tunnel interface interface in the transport VPN (on vEdge routers only).

GRE interfaces are logical interfaces, and you configure them just like any other physical interface. GRE interfaces come up as soon as they are configured, and they stay up as long as the physical tunnel interface is up.

vManage Feature Template

For vEdge routers only:

Configuration ► Templates ► VPN Interface GRE

Command Hierarchy

vpn 0 
  interface grenumber    
    access-list acl-name
    description text
    ip address prefix/length
    keepalive seconds retries
    mtu bytes
    policer policer-name
    rewrite-rule rule-name
    tcp-mss-adjust bytes
    tunnel-destination ip-address
    (tunnel-source ip-address | tunnel-source-interface interface-name)


Interface Name
Name of the GRE interface.number can be a value from 1 through 255.


Configure a GRE tunnel interface in VPN 0:

vEdge# show running-config vpn 0
vpn 0
 interface gre1
  ip address
  keepalive 60 10
  no shutdown

Release Information

Command introduced in Release 14.1​.
Support for GRE interfaces added in Release 15.4.1.

Additional Information

See the "Configure GRE Interfaces and Advertise Services to Them" section in  Configuring Interfaces article for your software release.

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