162 CHAPTER 18: LINK AGGREGATION OVERVIEW
Approaches to Link
Aggregation
Two ways are available for implementing link aggregation, as described in
“Manual Link Aggregation” on page 163 and “Static LACP link aggregation” on
page 164.
Table 29 Consistency considerations for ports in an aggregation
Category Considerations
STP State of port-level STP (enabled or disabled)
Attribute of the link (point-to-point or otherwise) connected to the port
Port path cost
STP priority
Maximum transmission rate
Loop protection
Root protection
Port type (whether the port is an edge port)
QoS Traffic policing
Port rate limiting
Strict priority (SP) queuing
Weighted round robin (WRR) queuing
Port priority
Policy setting on the port
Port trust mode
GVRP GVRP state on ports (enabled or disabled)
GVRP registration type
GARP timers
Q-in-Q State of Q-in-Q (enabled or disabled)
Added outer VLAN tag
Policy of appending outer VLAN tag according to inner VLAN IDs
BPDU tunnel BPDU tunnel state on ports (enabled or disabled)
BPDU tunnel state for STP on ports (enabled or disabled)
VLAN VLANs carried on the port
Default VLAN ID on the port
Link type of the port, which can be trunk, hybrid, or access
sub-net VLAN configuration
protocol VLAN configuration
VLAN tag configuration
Port attribute Port rate
Duplex mode
Up/down state of the link
Isolation group membership of the port
MAC address
learning
Maximum number of MAC addresses that can be learned on the port
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