ZT8101 Intel (CPU), ZT8101 Datasheet - Page 31

• Manufacturer Part Number: ZT8101
• Manufacturer: Intel (CPU)

Specifications of ZT8101

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Layer 3 Unicast Routing Protocols
6.1
6.2
6.3
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NetStructure
ARP Table
The ARP table maintains the mappings from Internet addresses to hardware addresses. There are
two types of ARP entries: dynamic and static.
When a static ARP entry is added to the switch’s ARP table, the switch does not send an ARP
query to the configured IP address. This allows the switch to connect to devices that have not
implemented ARP.
The ARP table has the following characteristics:
Routing Table
TCP/IP routing protocols have ways of discovering the reachable IP address prefixes and, for each
prefix, the next-hop router to use to forward data traffic to the prefix. The information exchanged
between routers results in an internal database called the routing table, which instructs the router
how to forward packets. There are two common implementations for a router’s routing table: hash
+ binary tree algorithm and Patricia tree. Both algorithms have their strengths and weaknesses.
Since Layer 3 software is currently configured to use the Patricia tree algorithm, the ZT 8101
switch uses the Patricia tree algorithm.
The switch’s routing table has the following characteristics:
Multi-Netting
In legacy networks, multi-netting is commonly used to configure a physical router port with more
than one IP interface. In a Layer 3 switch, an IP interface is bound to a single VLAN. To
accommodate multi-netting, you must configure two or more tagged VLANs to span the same
physical ports and then assign each VLAN a different IP address.
The VLANs must include tagged ports, because untagged ports can only belong to one VLAN.
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Static entries have higher precedence than dynamic entries. Therefore, a static entry will not be
overwritten by a dynamic entry.
The aging time for dynamic entries is 20 minutes. This value is not configurable.
The table can be up to 2 K in size.
Up to 32 static entries are allowed in the table.
The table can be up to 2 K in size.
Up to 32 static entries are allowed in the table.
ZT 8101 10/100 Ethernet Switch Technical Product Specification
Layer 3 Unicast Routing Protocols
6
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