Specifications

show mpls atm-ldp capability
MP-583
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
This command displays the MPLS ATM capabilities negotiated by LDP or the Tag Distribution Protocol
(TDP).
Note TDP is not supported for LDP features in Cisco IOS 12.0(30)S and later releases, 12.2(27)SBC and later
12.2S releases, and 12.3(14)T and later releases.
Examples The following is sample output from the show mpls atm-ldp capability command:
Router# show mpls atm-ldp capability
VPI VCI Alloc Odd/Even VC Merge
ATM0/1/0 Range Range Scheme Scheme IN OUT
Negotiated [100 - 101] [33 - 1023] UNIDIR - -
Local [100 - 101] [33 - 16383] UNIDIR EN EN
Peer [100 - 101] [33 - 1023] UNIDIR - -
VPI VCI Alloc Odd/Even VC Merge
ATM0/1/1 Range Range Scheme Scheme IN OUT
Negotiated [201 - 202] [33 - 1023] BIDIR - -
Local [201 - 202] [33 - 16383] UNIDIR ODD NO NO
Peer [201 - 202] [33 - 1023] BIDIR EVEN - -
Table 87 describes the significant fields shown in the display.
Ta b l e 87 show mpls atm-ldp capability Field Descriptions
Field Description
VPI Range Minimum and maximum numbers of VPIs supported on this interface.
VCI Range Minimum and maximum numbers of VCIs supported on this interface.
Alloc Scheme Indicates the applicable allocation scheme, as follows:
• UNIDIR—Unidirectional capability indicates that the peer can, within a
single VPI, support binding of the same VCI to different prefixes on
different directions of the link.
• BIDIR—Bidirectional capability indicates that within a single VPI, a
single VCI can appear in one binding only. In this case, one peer
allocates bindings in the even VCI space, and the other in the odd VCI
space. The system with the lower LDP identifier assigns even-numbered
VCIs.
The negotiated allocation scheme is UNIDIR, only if both peers have
U
NIDIR capability. Otherwise, the allocation scheme is BIDIR.
Note These definitions for unidirectional and bidirectional are consistent
with normal ATM usage of the terms; however, they are exactly
opposite from the definitions for them in the IETF LDP
specification.
Odd/Even Scheme Indicates whether the local device or the peer is assigning an odd- or
e
ven-numbered VCI when the negotiated scheme is BIDIR. It does not
display any information when the negotiated scheme is UNIDIR.