C
HAPTER
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| Basic Administration Protocols
Link Layer Discovery Protocol
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Port Details – 802.3 Extension Port Information
◆ Remote Port Auto-Neg Supported – Shows whether the given port
(associated with remote system) supports auto-negotiation.
◆ Remote Port Auto-Neg Adv-Capability – The value (bitmap) of the
ifMauAutoNegCapAdvertisedBits object (defined in IETF RFC 3636)
which is associated with a port on the remote system.
◆ Remote Port Auto-Neg Status – Shows whether port auto-
negotiation is enabled on a port associated with the remote system.
◆ Remote Port MAU Type – An integer value that indicates the
operational MAU type of the sending device. This object contains the
integer value derived from the list position of the corresponding
dot3MauType as listed in IETF RFC 3636 and is equal to the last number
in the respective dot3MauType OID.
Port Details – 802.3 Extension Power Information
◆ Remote Power Class – The port Class of the given port associated
with the remote system (PSE – Power Sourcing Equipment or PD –
Powered Device).
◆ Remote Power MDI Status – Shows whether MDI power is enabled
on the given port associated with the remote system.
Table 30: Remote Port Auto-Negotiation Advertised Capability
Bit Capability
0 other or unknown
1 10BASE-T half duplex mode
2 10BASE-T full duplex mode
3 100BASE-T4
4 100BASE-TX half duplex mode
5 100BASE-TX full duplex mode
6 100BASE-T2 half duplex mode
7 100BASE-T2 full duplex mode
8 PAUSE for full-duplex links
9 Asymmetric PAUSE for full-duplex links
10 Symmetric PAUSE for full-duplex links
11 Asymmetric and Symmetric PAUSE for full-duplex links
12 1000BASE-X, -LX, -SX, -CX half duplex mode
13 1000BASE-X, -LX, -SX, -CX full duplex mode
14 1000BASE-T half duplex mode
15 1000BASE-T full duplex mode
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