Introduction 17• Improved bandwidth granularity• High bandwidth server connectivityLAG is composed of ports with the same speed, set to full-duplex operation.For more information, see "Defining LAG Membership" on page 327.Link Aggregation and LACPLACP uses peer exchanges across links to determine, on an ongoing basis, the aggregation capability ofvarious links, and continuously provides the maximum level of aggregation capability achievable between agiven pair of systems. LACP automatically determines, configures, binds and monitors the port binding toaggregators within the system.For more information, see "Defining LACP Parameters" on page 325.Layer 3 FeaturesAddress Resolution Protocol (ARP)ARP is a TCP/IP protocol that converts IP addresses into physical addresses. ARP automatically determinesDevice Next-Hop MAC addresses of systems, including directly attached end systems. Users can overrideand supplement this by defining additional ARP Table entries.For more information, see "Mapping Domain Host" on page 115.TCPTransport Control Protocol (TCP) connections are defined between 2 ports by an initial synchronizationexchange. TCP ports are identified by an IP address and a 16-bit port number. Octets streams are dividedinto TCP packets, each carrying a sequence number.BootP and DHCP ClientsDynamic Host Configuration Protocol (DHCP) enables additional setup parameters to be received from anetwork server upon system startup. DHCP service is an on-going process. DHCP is an extension to BootP.For more information on DHCP, see "Defining DHCP IP Interface Parameters" on page 109.Quality of Service FeaturesClass Of Service 802.1p SupportThe IEEE 802.1p signaling technique is an OSI Layer 2 standard for marking and prioritizing network trafficat the data link/MAC sub-layer. 802.1p traffic is classified and sent to the destination. No bandwidthreservations or limits are established or enforced. 802.1p is a spin-off of the 802.1Q (VLANs) standard.802.1p establishes eight levels of priority, similar to the IP Precedence IP Header bit-field.For more information, see "Configuring Quality of Service" on page 383.
