Cisco Cisco Packet Data Gateway (PDG) Ratgeber Für Administratoren
System Settings
Configuring ASR 5000 Link Aggregation ▀
Cisco ASR 5000 System Administration Guide ▄
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Distribution Option
This option controls how a LAG hash map is generated and is required for Equal Cost Multiple Path (ECMP) over
LAG. Set this option on the master port for use with the whole group.
LAG. Set this option on the master port for use with the whole group.
link-aggregation distribution { simple | rotate | block | random }
The following list defines the distribution options (assuming port index 0,1,2,3 were selected.
simple: Repetition of all selected port indexes (Example: 0123012301230123…)
rotate: Repetition of rotated port index (Example: 0123123023013012…)
block: Blocks of the same port index (Example: 0000111122223333)
random: Based on pseudo random number
Toggle Link
A port or card switch within the LAG can be set to toggle the link. Enable this option via the link-aggregation toggle-
link command at the Card Configuration Mode or Ethernet Port Configuration Mode.
link command at the Card Configuration Mode or Ethernet Port Configuration Mode.
Horizontal Link Aggregation with Two Ethernet Switches
When a LAG contains two sets of ports each connecting to a different Ethernet switch, the operator has the ability to
specify the slot/port (connected to the destination switch) when switching ports.
specify the slot/port (connected to the destination switch) when switching ports.
The Exec mode link-aggregation port switch to slot/port command is used to configure this option. The following
criteria apply to the setting of this option:
criteria apply to the setting of this option:
slot/port must support LAG.
slot/port must be configured with LAG.
slot/port must not be already actively distributing
slot/port must have negotiated a link aggregation partner in standard mode.
slot/port's partner must have an equal or higher in standard mode.
slot/port
's partner bundle must have equal or higher bandwidth in standard mode.
Switching to slot/port must not violate preference within hold-time in standard mode.
Link Aggregation Status
To check the status of link aggregation, use the following commands:
show port table
show port info slot/port