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TRUNKING
Overview
Port Trunking refers to the use of multiple network connections in parallel to increase the link
speed beyond the limits of any one single cable or port. This is commonly called link
aggregation. These aggregated links may be used to interconnect switches or to connect
high-capacity servers to a network.
The EtherWAN EX24000 Switch supports up to six trunks for 100Mbps ports and up to two
gigabit trunks. Each 100Mbps trunk can be composed of up to eight 100Mbps ports while
each gigabit trunk can support up to four gigabit ports.
There are two popular types of port trunking, static and link aggregation control
protocol (LACP). We will take a minute to discuss both types of trunking and why one would
want to use them.
Static Channel Trunking
Originally specified in the IEEE802.3AD specification and now in the IEEE
802.1AX2008 specification, this type of trunking is the most basic and easiest to understand.
It simply is the aggregation of two or more Ethernet links to form a virtual link equivalent in
bandwidth to the sum of its individual links. For example, if one had four 100Mbps Ethernet
links composing a single static channel, the overall bandwidth of the static channel would be
400Mbps.
Prioritization of data through the channel is simple as well. When one of the links of
the channel becomes saturated the excess data spills over into the remaining channels. For
example, if one were sending a constant stream of data at 250Mbps through a static channel
composed of 4 individual 100Mbps links, the first two links of the channel would be
completely saturated while the half of the third channel would be utilized and none of the
forth channel would be used.
Link Aggregation Control Protocol
Within the IEEE specification, the Link Aggregation Control Protocol (LACP) provides
a method to control the bundling of several physical ports together to form a single logical
channel. LACP allows a network device to negotiate an automatic bundling of links by
sending LACP packets to the peer (directly connected device that also implements LACP).
This means that both sides of the LACP channel must be configured for LACP which implies
both devices must support it.
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EX24000 Switch Users Guide
Содержание EX24000
Страница 32: ...Figure 8 IP Address 32 EX24000 Switch Users Guide ...
Страница 42: ...Figure 14 Remote Logging Page 42 EX24000 Switch Users Guide ...
Страница 53: ...Figure 22 Port Security 53 EX24000 Switch Users Guide ...
Страница 61: ...Figure 23 Bridging 61 EX24000 Switch Users Guide ...
Страница 67: ...Figure 26 Storm Detect 67 EX24000 Switch Users Guide ...
Страница 72: ...Figure 31 Port Mirroring 72 EX24000 Switch Users Guide ...
Страница 88: ...Figure 38 LACP Trunking 88 EX24000 Switch Users Guide ...
Страница 93: ...Figure 39 STP Ring Global Configuration 93 EX24000 Switch Users Guide ...
Страница 97: ...Figure 42 Max Age Hello Timer Forward Delay 97 EX24000 Switch Users Guide ...
Страница 116: ...Figure 55 Port Cost Priority 116 EX24000 Switch Users Guide ...
Страница 118: ...Figure 56 Port Instance Configuration Figure 57 Port Instance Adding Ports 118 EX24000 Switch Users Guide ...
Страница 132: ...Figure 63 Advanced Per Port Configuration 132 EX24000 Switch Users Guide ...
Страница 163: ...Figure 78 SNMP General Settings 163 EX24000 Switch Users Guide ...
Страница 181: ...Figure 91 LLDP Global Settings 181 EX24000 Switch Users Guide ...
Страница 183: ...Figure 92 LLDP Ports Settings 183 EX24000 Switch Users Guide ...
Страница 193: ...Figure 95 GVRP 193 EX24000 Switch Users Guide ...
Страница 198: ...Figure 98 GVRP Per Port Settings 198 EX24000 Switch Users Guide ...
Страница 223: ...Figure 110 Daylight Savings Date Mode 223 EX24000 Switch Users Guide ...