WG82574IT S LBAB Intel, WG82574IT S LBAB Datasheet - Page 241
WG82574IT S LBAB
Manufacturer Part Number
WG82574IT S LBAB
Description
Manufacturer
Intel
Datasheet
1.WG82574IT_S_LBAB.pdf
(472 pages)
Specifications of WG82574IT S LBAB
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
64
Lead Free Status / RoHS Status
Compliant
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System Manageability—82574 GbE Controller
8.13.4.1
8.13.4.2
8.13.4.2.1
Note:
Note:
Note:
Note:
NC Capabilities Advertisement
NC-SI defines the Get Capabilities command. It is recommended that the MC use this
command and verify that the capabilities match its requirements before performing any
configurations.
For example, the MC should verify that the NC supports a specific AEN before enabling
it.
Receive Filtering
In order to receive traffic, the MC must configure the NC with receive filtering rules.
These rules are checked on every packet received on the LAN interface (such as from
the network). Only if the rules matched, will the packet be forwarded to the MC.
MAC Address Filtering
NC-SI defines three types of MAC address filters: unicast, multicast and broadcast. To
be received (not dropped) a packet must match at least one of these filters.
The MC should set one MAC address using the Set MAC Address command and enable
broadcast and global multicast filtering.
Unicast/Exact Match (Set MAC Address Command)
This filter filters on specific 48-bit MAC addresses. The MC must configure this filter
with a dedicated MAC address.
The NC might expose three types of unicast/exact match filters (such as MAC filters
that match on the entire 48 bits of the MAC address): unicast, multicast and mixed.
The 82574 exposes two mixed filters, which might be used both for unicast and
multicast filtering. The MC should use one mixed filter for its MAC address.
Refer to NC-SI specification - Set MAC Address for further details.
Broadcast (Enable/Disable Broadcast Filter Command)
NC-SI defines a broadcast filtering mechanism which has the following states:
Refer to NC-SI specification Enable/Disable Broadcast Filter command.
Global Multicast (Enable/Disable Global Multicast Filter)
NC-SI defines a multicast filtering mechanism which has the following states:
The recommended operational mode is Enabled, with specific filters set.
Not all multicast filtering modes are necessarily supported.
Refer to NC-SI specification Enable/Disable Global Multicast Filter command for further
details.
1. Enabled - All broadcast traffic is blocked (not forwarded) to the MC, except for
2. Disabled - All broadcast traffic is forwarded to the MC, with no exceptions.
1. Enabled - All multicast traffic is blocked (not forwarded) to the MC.
2. Disabled - All multicast traffic is forwarded to the MC, with no exceptions.
specific filters (such as ARP request, DHCP, and NetBIOS).
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