4.3 Types and naming procedure of router tunnels
Network tunnels of various types and purposes are used for the router operation. The naming system allows
you to uniquely address the tunnels by their functional purpose. The following table contains the list of tunnels
types.
Table 43 – Types and naming procedure of router tunnels
Tunnel type Designation
L2TPv3 tunnel Designation of L2TPv3 tunnel includes the type and sequence number of a tunnel:
l2tpv3 <L2TPV3_ID>
Designation example: l2tpv3 1
GRE tunnel Designation of GRE tunnel includes the type and sequence number of a tunnel:
gre <GRE_ID>
Designation example: gre 1
SoftGRE tunnel Designation of SoftGRE tunnel includes the type and sequence number of a tunnel and,
optionally, a virtual interface VLAN ID:
softgre <GRE_ID>[.<VLAN>]
Designation examples: softgre 1, softgre 1.10
IPv4-over-IPv4 tunnel Designation of IPv4-over-IPv4 tunnel includes the type and sequence number of a tunnel:
ip4ip4 <IPIP_ID>
Designation example: ip4ip4 1
IPsec tunnel Designation of IPsec tunnel includes the type and sequence number of a tunnel:
vti <VTI_ID>
Designation example: vti 1
Logical tunnel (tunnel
between VRF)
Designation of logical tunnel includes the type and sequence number of a tunnel:
lt <LT_ID>
Designation example: lt 1
Number of tunnels of each type depends on the router model and firmware version.
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