Cisco Sg3008 Manual

Port Management
Setting Port Configuration
126 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 
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-Combo Fiber—SFP Fiber Gigabit Interface Conver ter Por t with the 
following values: 100M and 1000M (type: ComboF).
-10G-Fiber Optics—Ports with speed of either 1G or 10G.
NOTESFP Fiber takes precedence in Combo ports when both ports are 
being used.
•Administrative Status—Select whether the port must be Up or Down when 
the device is rebooted....

Port Management
Setting Port Configuration
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•Administrative Duplex Mode—Select the port duplex mode. This field is 
configurable only when auto-negotiation is disabled, and the port speed is 
s et  to 10M or 100M . At p or t sp e e d of 1G,  t he m o de is al ways full  d uplex .  The 
possible options are:
-Fu ll—The interface supports transmission between the device and the 
client in both...

Port Management
Setting Port Configuration
128 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 
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-MDI—Select to connect this device to a station by using a straight 
through cable. 
-Auto—Select to configure this device to automatically detect the correct 
pinouts for the connection to another device. 
•Operational MDI/MDIX—Displays the current MDI/MDIX setting.
•Protected Port—Select to make this a protected port. (A protected port is 
also referred...

Port Management
Link Aggregation
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•Port Security—Select to enable the error recovery mechanism for the port 
security err-disable state.
•802.1x Single Host Violation—Select to enable error recovery mechanism 
for the 802.1x error-disable state.
•ACL Deny—Select to enable. error recovery mechanism for the ACL deny 
error-disable state.
•STP BPDU Guard—Select to enable the error recovery mechanism...

Port Management
Link Aggregation
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Link Aggregation Overview
Link Aggregation Control Protocol (LACP) is part of the IEEE specification (802.3az) 
that enables you to bundle several physical ports together to form a single logical 
channel (LAG). LAGs multiply the bandwidth, increase port flexibility, and provide 
link redundancy between two devices.
Two types of LAGs are supported:
•Static—A LAG is...

Port Management
Link Aggregation
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Every LAG has the following characteristics:
•All ports in a LAG must be of the same media type.
•To add a port to the LAG, it cannot belong to any VLAN except the default 
VLAN.
•Ports in a LAG must not be assigned to another LAG.
•No more than eight ports are assigned to a static LAG and no more than 16 
ports can be candidates for a dynamic LAG.
•All the ports...

Port Management
Link Aggregation
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To configure a dynamic LAG, perform the following actions:
1. E n a b l e  L A C P  o n  t h e  L A G .    A s s i g n  u p  to  1 6  c a n d i d a te s  p o r t s  to  t h e  d y n a m i c  L A G  
by selecting and moving the ports from the Port List to the LAG Members List 
by using the LAG Management page.
2. Configure various aspects of the LAG, such as speed and...

Port Management
Link Aggregation
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•Port List—Move those ports that are to be assigned to the LAG from the 
Port List to the LAG Members list. Up to eight ports per static LAG can be 
assigned, and 16 ports can be assigned to a dynamic LAG.
STEP  3Click Apply. LAG membership is saved to the Running Configuration file.
Configuring LAG Settings
The LAG Settings page displays a table of current...

Port Management
Link Aggregation
134 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 
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•Administrative Auto Negotiation—Enables or disable auto-negotiation on 
the LAG. Auto-negotiation is a protocol between two link partners that 
enables a LAG to advertise its transmission speed and flow control to its 
partner (the Flow Control default is disabled). It is recommended to keep 
auto-negotiation enabled on both sides of an aggregate link, or disabled...

Port Management
Link Aggregation
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Configuring LACP
A dynamic LAG is LACP-enabled, and LACP is run on every candidate port 
defined in the LAG.
LACP Priority and Rules
LACP system priority and LACP port priority are both used to determine which of 
the candidate ports become active member ports in a dynamic LAG configured 
with more than eight candidate ports. 
The selected candidate ports of the...