Packet Format of Transitive Probes
The transitive probe packet is a proprietary protocol packet with an Ethernet type,
ETHERTYPE_ORCL (0x881b). For more information
about the transitive probes, see Probe-Based Failure Detection. For an example to display the statistics of the probes, see Example 2–7. The following figure
shows the transitive probe packet format.
Figure B-1 Transitive Probe Packet
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Dest MAC
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Destination MAC address.
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Src MAC
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Source MAC address.
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Proto#
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Protocol number. The Layer 2 payload of
ETHERTYPE_ORCL packets must start with a 16-bit
protocol number, which is 1 for the transitive probe
packet.
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Typ
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Probe packet type. The probe packet type is 0 for
request and 1 for response.
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Pad
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Padding (all-zero).
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Seq#
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Probe sequence number.
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Timestamp
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Probe timestamp.
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TL
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Target information length. For Ethernet, target length is 6 bits
(Ethernet MAC address length).
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Target
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Target port MAC address.
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SL
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Source information length. For Ethernet, source length is 6
bits.
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Source
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Source port MAC address.
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