Port Configuration
8-6
8
Creating Trunk Groups
You can create multiple links between devices that work as one virtual, aggregate
link. A port trunk offers a dramatic increase in bandwidth for network segments
where bottlenecks exist, as well as providing a fault-tolerant link between two
devices (i.e., single switch or a stack). You can create up to 32 trunks.
The switch supports both static trunking and dynamic Link Aggregation Control
Protocol (LACP). Static trunks have to be manually configured at both ends of the
link, and the switches must comply with the Cisco EtherChannel standard. On the
other hand, LACP configured ports can automatically negotiate a trunked link with
LACP-configured ports on another device. You can configure any number of ports
on the switch as LACP, as long as they are not already configured as part of a static
trunk. If ports on another device are also configured as LACP, the switch and the
other device will negotiate a trunk link between them. If an LACP trunk consists of
more than eight ports, all other ports will be placed in a standby mode. Should one
link in the trunk fail, one of the standby ports will automatically be activated to
replace it.
Command Usage
Besides balancing the load across each port in the trunk, the other ports provide
redundancy by taking over the load if a port in the trunk fails. However, before
making any physical connections between devices, use the web interface or CLI to
specify the trunk on the devices at both ends. When using a port trunk, take note of
the following points:
• Finish configuring port trunks before you connect the corresponding network
cables between switches to avoid creating a loop.
• You can create up to 32 trunks on a switch or stack, with up to eight Gigabit ports
per trunk or up to four 10Gbps ports per trunk. Note that because the stack
functions conceptually as a single system, you can include ports from different
units in the same trunk. For example, you could connect ports spread across
several units that belong VLAN 2 into a common trunk.
• The ports at both ends of a connection must be configured as trunk ports.
• When configuring static trunks on switches of different types, they must be
compatible with the Cisco EtherChannel standard.
• The ports at both ends of a trunk must be configured in an identical manner,
including communication mode (i.e., speed, duplex mode and flow control), VLAN
assignments, and CoS settings.
• Any of the Gigabit ports on the front panel can be trunked together, including ports
of different media types.
• All the ports in a trunk have to be treated as a whole when moved from/to, added
or deleted from a VLAN.
• STP, VLAN, and IGMP settings can only be made for the entire trunk.
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Страница 34: ...Getting Started ...
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Страница 64: ...Switch Management ...
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Страница 118: ...Basic Management Tasks 4 42 4 ...
Страница 164: ...User Authentication 6 28 6 ...
Страница 176: ...Access Control Lists 7 12 7 ...
Страница 284: ...Quality of Service 14 8 14 ...
Страница 294: ...Multicast Filtering 15 10 15 ...
Страница 300: ...Domain Name Service 16 6 16 ...
Страница 310: ...Dynamic Host Configuration Protocol 17 10 17 ...
Страница 320: ...Configuring Router Redundancy 18 10 18 ...
Страница 344: ...IP Routing 19 24 19 ...
Страница 356: ...Unicast Routing 20 12 20 Web Click Routing Protocol RIP Statistics Figure 20 5 RIP Statistics ...
Страница 386: ...Unicast Routing 20 42 20 ...
Страница 388: ...Command Line Interface ...
Страница 400: ...Overview of the Command Line Interface 21 12 21 ...
Страница 466: ...SNMP Commands 24 16 24 ...
Страница 520: ...Access Control List Commands 26 18 26 ...
Страница 546: ...Rate Limit Commands 30 2 30 ...
Страница 612: ...VLAN Commands 34 24 34 ...
Страница 626: ...Class of Service Commands 35 14 35 ...
Страница 670: ...DHCP Commands 39 16 39 ...
Страница 716: ...IP Interface Commands 41 36 41 ...
Страница 768: ...IP Routing Commands 42 52 42 ...
Страница 770: ...Appendices ...
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