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| 型號： | IXE5418 |
| 元件分類： | 通信、網(wǎng)絡(luò)模塊及開發(fā)工具 |
| 英文描述： | Telecomm/Datacomm |
| 中文描述： | 電信/數(shù)據(jù)通信 |
| 文件頁數(shù)： | 10/30頁 |
| 文件大?。?/td> | 367K |
| 代理商： | IXE5418 |
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Intel Media Switch
IXE5418 Gigabit Device
10
Data Sheet
Table2
entries are maintained by the Switching Engine block for Layer 2, IP, and IPX addresses.
5.2
Layer 2 Protocol Support
The Layer 2 protocols supported are: ARP, RARP, AppleTalk, DECNet, SNA, NetBios, DLC/LLC,
IP, and IPX.
5.3
IP Switching/Routing features
The IXE5418 will forward the first packet of the flow to the CPU if it does not find a forwarding
entry in its tables.
The CPU programs the outgoing port number, as well as the Ethernet address of the next hop or
destination address, into the IXE5418 tables. The first packet must then be routed on the port that
has the destination node connected through it.
Once the entries are created in the IXE5418 tables for the source and destination, all the packets
belonging to the flow are routed in the hardware at wire speed. Packets belonging to protocols other
than IP and IPX will be switched in the hardware at wire speeds using the Layer 2 switching
algorithm.
5.3.1
Routing Domains
A routing domain is an IP network. An IP address and a subnet mask identify an IP routing domain.
Multiple routing domains can exist on the same port (in which case, they are identified by 802.1Q
VLAN tags) or multiple ports can belong to a routing domain. All the ports that belong to a routing
domain have the same IP address. Associated with each IP network is a routing domain number.
The IXE5418 device supports up to 256 routing domains. Each routing domain has an Ethernet
address associated with it.
Table 2.
Switching Block Entries
Entry Type
Description
Record Entry
The basic entry associated with every address. Contains a pointer directing to another
entry called the Rules Entry.
Rules Entry
Contains information about the port on which this address resides, as well as some of
the filter, mirror, and priority rules. Contains further pointers to a QoS/Flow Stat Entry
and a Protocol Entry.
QoS/Flow Stat
Entry
Contains information that allows configuration of QoS flows and configuration of flow
based statistics gathering (source address to destination address). For IP and IPX
addresses, this QoS/Flow Stat Entry also contains the Destination Swap Address and
therefore is called the Dst Swap/ QoS/ Flow Stat Entry.
Protocol Entry
Contains further filter, mirror, and priority configuration information and can be
configured as a list of one or more words with different protocols selecting to different
words in the same entry. Contains one or more pointers to a Net ID Entry.
Net ID Entry
Contains the Prepend Word feature which can be used to cascade other devices using
the IXE5418 as a switching matrix. This entry also contains the source address and
destination address based mirror port information for Global Source and Global
Destination address based mirroring.
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