07-MPLS Command Reference

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07-Tunnel policy commands
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07-Tunnel policy commands 59.02 KB

Tunnel policy commands

display mpls tunnel

Use display mpls tunnel to display tunnel information.

Syntax

display mpls tunnel { all | statistics | [ vpn-instance vpn-instance-name ] destination { ipv4-address | ipv6-address } }

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

all: Displays all tunnels. MPLS TE tunnel information is displayed only when the network layer is up.

statistics: Displays tunnel statistics.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command displays tunnel information for the public network.

destination: Displays the tunnel destined for the specified address.

ipv4-address: Specifies the tunnel destination IPv4 address.

ipv6-address: Specifies the tunnel destination IPv6 address.

Examples

# Display information about all tunnels.

<Sysname> display mpls tunnel all

Destination      Type     Tunnel/NHLFE      VPN Instance

2.2.2.2          LSP      NHLFE1024         -

3.3.3.3          CRLSP    Tunnel2           -

Table 1 Command output

Field

Description

Destination

Tunnel destination address.

Type

Tunnel type: LSP or CRLSP (MPLS TE tunnel).

Tunnel/NHLFE

Tunnel, tunnel bundle, or NHLFE entry.

NHLFEnumber represents the ingress LSP that matches the NHLFE entry with NID of number.

VPN Instance

VPN instance name. If the tunnel belongs to the public network, this field displays a hyphen (-).

 

# Display tunnel statistics.

<Sysname> display mpls tunnel statistics

LSP  :     1

GRE  :     0

CRLSP:     0

Table 2 Command output

Field

Description

LSP

Number of LSP tunnels.

GRE

This field is not supported in the current software version.

Number of GRE tunnels.

CRLSP

Number of CRLSP and SRLSP tunnels.

 

preferred-path

Use preferred-path to configure a tunnel or a tunnel bundle as a preferred tunnel.

Use undo preferred-path to remove the preferred tunnel setting for a tunnel or tunnel bundle.

Syntax

preferred-path { tunnel number | tunnel-bundle number }

undo preferred-path { tunnel number | tunnel-bundle number }

Default

No preferred tunnels are configured.

Views

Tunnel policy view

Predefined user roles

network-admin

mdc-admin

Parameters

tunnel number: Specifies an MPLS TE tunnel by its tunnel interface number. The value range for the number argument varies by device operating mode (set by using the system-working-mode command). For more information about configuring the device operating mode, see device management in Fundamentals Configuration Guide.

tunnel-bundle number: Specifies a tunnel bundle by its tunnel bundle interface number. The value range is 0 to 511.

Usage guidelines

As a best practice for an MPLS VPN, configure a preferred tunnel and make sure the destination address of the tunnel/tunnel bundle interface identifies the peer PE. In this method, the local PE forwards traffic destined for the peer PE over the preferred MPLS TE tunnel or tunnel bundle.

For a tunnel policy to solely use a tunnel or tunnel bundle, do not configure the tunnel or tunnel bundle as the preferred tunnel in other tunnel policies.

If you configure multiple preferred tunnels that have the same destination address in a tunnel policy, only the first configured tunnel takes effect. If the first tunnel is not available, the second tunnel is used, and so forth. No load balancing will be performed on these tunnels.

You can configure a maximum of 128 preferred tunnels in a tunnel policy.

Examples

# Configure tunnel 1 and tunnel 2 as preferred tunnels for tunnel policy policy1.

<Sysname> system-view

[Sysname] tunnel-policy policy1

[Sysname-tunnel-policy-policy1] preferred-path tunnel 1

[Sysname-tunnel-policy-policy1] preferred-path tunnel 2

select-seq load-balance-number

Use select-seq load-balance-number to configure the tunnel selection order and set the number of tunnels for load balancing.

Use undo select-seq to restore the default.

Syntax

select-seq [ strict ] { cr-lsp | lsp } * load-balance-number number

undo select-seq

Default

The device selects only one tunnel in LSP-CRLSP order.

Views

Tunnel policy view

Predefined user roles

network-admin

mdc-admin

Parameters

strict: Uses the same type of tunnels for load balancing. This keyword is available in R2712 and later.

cr-lsp: Uses MPLS TE (CRLSP or SRLSP) tunnels.

lsp: Uses LSP tunnels.

load-balance-number number: Specifies the number of tunnels for load balancing. The value range for the number argument is 1 to 128. The actual number of tunnels used for load balancing is the value set by this argument or the number of ECMP routes on the device, whichever is smaller.

Usage guidelines

A tunnel type closer to the select-seq keyword has a higher priority. The strict keyword determines whether VPN can use a hybrid of the specified types of tunnels for load balancing.

For example, the select-seq lsp cr-lsp load-balance-number 3 command specifies three tunnels for load balancing and gives LSP tunnels higher priority over MPLS TE tunnels.

·     If you do not specify the strict keyword, VPN can use MPLS TE tunnels to remedy the deficiency of LSP tunnels.

·     If you specify the strict keyword, VPN uses only one type of tunnels. It uses MPLS TE tunnels only if no LSP tunnels are available.

When you configure both the select-seq load-balance-number and preferred-path commands for a tunnel policy, the tunnel policy selects tunnels in the following steps:

1.     If the destination address of the preferred tunnel identifies a peer PE, the tunnel policy uses the preferred tunnel to forward traffic destined for the peer PE.

2.     If not, the tunnel policy selects tunnels as configured by the select-seq load-balance-number command.

Examples

# Configure tunnel policy policy1 to use only MPLS TE tunnels, and set the load balancing number to 2.

<Sysname> system-view

[Sysname] tunnel-policy policy1

[Sysname-tunnel-policy-policy1] select-seq cr-lsp load-balance-number 2

tunnel-policy (system view)

Use tunnel-policy to create a tunnel policy and enter its view, or enter the view of an existing tunnel policy.

Use undo tunnel-policy to delete a tunnel policy.

Syntax

tunnel-policy tunnel-policy-name

undo tunnel-policy tunnel-policy-name

Default

No tunnel policies exist.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

tunnel-policy-name: Specifies a name for the tunnel policy, a case-sensitive string of 1 to 19 characters.

Examples

# Create tunnel policy policy1 and enter its view.

<Sysname> system-view

[Sysname] tunnel-policy policy1

[Sysname-tunnel-policy-policy1]

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