Specifications

preferred-path
MP-392
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
preferred-path
To specify the path that traffic uses (a Multiprotocol Label Switching (MPLS) Traffic engineering (TE)
tunnel or destination IP address and Domain Name Server (DNS) name), use the preferred-path
command in pseudowire configuration mode. To disable tunnel selection, use the no form of this
command.
preferred-path {int
erface tunnel tunnel-number | peer {ip-address | host-name}}
[disable-fallback]
no preferred-path {int
erface tunnel tunnel-number | peer {ip-address | host-name}}
[disable-fallback]
Syntax Description
Command Default Tunnel selection is not enabled.
Command Modes Pseudowire configuration
Command History
Usage Guidelines The following guidelines provide more information about using this command:
• The destination IP address can be different from the peer router ID used in MPLS Label Distribution
Protocol (LDP). For example, a peer PE router can have multiple loopback IP addresses, which can
be reached by different paths, such as a TE tunnel, static IP route, or Interior Gateway Protocol (IGP)
route.
• This command is available only if the pseudowire encapsulation type is MPLS.
• Tunnel selection is enabled when you exit from pseudowire configuration mode.
• The selected path should be an LSP destined to the peer PE router.
• The selected tunnel must be an MPLS traffic engineering tunnel.
interface tunnel
t
unnel-number
Specifies an MPLS TE tunnel interface that is the core-facing output interface.
peer i
p-address |
host-name
Specifies an IP address or DNS name configured on the peer provider edge (PE)
router, which is reachable through a label switched path (LSP).
disable-fallback (Optional) Disables the router from using the default path when the preferred
pa
th is unreachable.
Release Modification
12.0(25)S This command was introduced.
12.2(25)S This command was integrated into Cisco IOS Release 12.2(25)S.
12.2(28)SB This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.