svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
in.dlmpd(8)
in.dlmpd(8) System Administration Commands in.dlmpd(8)
NAME
in.dlmpd - DLMP aggregation probing daemon
SYNOPSIS
/usr/lib/inet/in.dlmpd
DESCRIPTION
The in.dlmpd daemon performs probe-based failure and repair detection
for DLMP mode aggregations.
Note that probe-based failure and repair detection will not start until
the administrator configures the probe-ip link property for the aggre‐
gation. Until then, the health of the underlying ports in the specific
aggregation will solely depend on the link state of the port.
The probe-ip link property configures the list of the source addresses
and the optional target addresses. IP addresses from this list, if con‐
figured as plumbed primary or as VNICs, will be used by in.dlmpd for
ICMP probing. Both IPv4 and IPv6 are supported. IPv6 probe-ip addresses
must be link-local.
Within a DLMP aggregation, each source IP address matching the probe-ip
configuration is associated with an underlying port through which the
inbound as well as outbound traffic, including the ICMP probes and
their ACKs, of the source IP address is sent/received. The in.dlmpd
daemon periodically sends out unicast ICMP packets directed at the con‐
figured targets; or if no targets are configured, in.dlmpd discovers
the targets first by sending out ICMP multicast packets with the given
source IP address. By monitoring the acknowledgment or the loss of the
ICMP acks, the in.dlmpd daemon is able to determine the health of the
port the source IP address is associated with. The port will be claimed
as "ICMP failed" if all the targets for that particular port become un‐
reachable. The port will be marked as "ICMP active" if at least one of
the targets is reachable from that port through ICMP probes.
Depending on how the probe-ip link property is configured and how the
configured source IP addresses are associated among the aggregation
ports, there may be ports that are not associated with any configured
probe-ip source IP address.
The health of those ports is determined by a different probe mechanism
called transitive probes. The in.dlmpd daemon will periodically
send/receive proprietary layer-2 probes between the "ICMP active" ports
and the ports that are not doing ICMP probing. If a port is able to
reach any "ICMP active" port, it is claimed to be on the same "island"
as the "ICMP active" port and is considered to be active as well. This
is called as "L2 active".
A port is claimed to be "failed" if it is neither "ICMP active" nor "L2
active". It is claimed to be "active", or recovered, if it is either
"ICMP active" or "L2 active".
When all the underlying ports are in the "failed" state, a single un‐
derlying port will be designated as "ICMP prober" in a round-robin man‐
ner by the in.dlmpd daemon to detect potential recovery. All the ICMP
probes will be sent through this port only. The transitive probing will
continue as before. Once the "ICMP prober" detects an ICMP probe suc‐
cess, that port becomes "active", together with all the other ports in
its island.
SMF Management
The in.dlmpd daemon service is managed by the service management facil‐
ity, smf(7), under the service identifier:
svc:/network/dlmp:default
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using svcadm(8).
Note that the service will be enabled automatically as needed when a
DLMP aggregation is created, and will be disabled if no DLMP aggrega‐
tion is in use. Therefore, administrative actions on this service, such
as enabling or disabling of the service, may be later changed accord‐
ingly based on the current status of the DLMP aggregation configura‐
tion.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilitysystem/network
SEE ALSO
icmp(4P), icmp6(4P), attributes(7), smf(7), dladm(8), dlstat(8), sv‐
cadm(8)
Oracle Solaris 11.4 11 May 2021 in.dlmpd(8)