H3C Technologies H3C S10500 Series Switches - Manual (Page 119)

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To do… Use the command... Remarks
Set the RSVP-TE GR recovery timer
mpls rsvp-te timer graceful-restart
recovery recovery-time Optional
300 seconds by default
Enter interface view of MPLS TE link
interface interface-type
interface-number
—
Enable RSVP hello extension for the
interface
mpls rsvp-te hello
Required
Disabled by default
Tuning CR-LSP setup
A CR-LSP is established through the signaling protocol based on the path calculated by CSPF using TEDB
and constraints. MPLS TE can affect CSPF calculation in many ways to determine the path that a CR-LSP
can traverse.
Configuration prerequisites
The configuration tasks described in this section are about CSPF of MPLS TE. They must be used in
conjunction with CSPF and the dynamic signal protocol (RSVP-TE). Before performing them, be aware of
each configuration objective and its impact on your system.
Configuration procedure
Configuring route pinning
Route pinning cannot be used together with reoptimization.
Follow these steps to configure route pinning:
To do… Use the command... Remarks
Enter system view system-view ––
Enter MPLS TE tunnel interface view interface tunnel tunnel-number ––
Enable route pinning mpls te route-pinning
Required
Disabled by default
Submit current tunnel configuration mpls te commit Required.
Configuring administrative group and affinity attribute
The affinity attribute of an MPLS TE tunnel identifies the properties of the links that the tunnel can use.
Together with the link administrative group, it decides which links the MPLS TE tunnel can use. This is
done by ANDing the 32-bit affinity attribute with the 32-bit link administrative group attribute. When
doing that, a 32-bit mask is used. The affinity bits corresponding to the 1s in the mask are “do care” bits
which must be considered while those corresponding to the 0s in the mask are “don’t care” bits.
For a link to be used by a TE tunnel, at least one considered affinity bit and its corresponding
administrative group bit must be set to 1.
Suppose the affinity of an MPLS TE tunnel is 0xFFFFFFFF and the mask is 0x0000FFFF. For a link to be
used by the tunnel, the leftmost 16 bits of its administrative group attribute can be 0s or 1s, but at least
one of the rest bits must be 1.