Cisco Cisco Packet Data Gateway (PDG)
System Settings
Configuring ASR 5500 Link Aggregation ▀
ASR 5500 System Administration Guide, StarOS Release 18 ▄
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Use the following commands to set the LACP parameters. LACP can run in active mode to send LACP packets
periodically, or in passive mode, in which it only responds to LACP packets it receives.
periodically, or in passive mode, in which it only responds to LACP packets it receives.
LACP can send packets at either a auto (30s) or fast (1s) rate. The defaults for this release are Active and Auto; see the
sample configuration below:
sample configuration below:
config
port ethernet slot#/port#
link-aggregation lacp { active | passive } [ rate { auto | fast } | timeout
{ long | short } ]
{ long | short } ]
Peers send out LACP packets when the state changes or if a difference is found from a received LACP packet about its
own state.
own state.
Corresponding ports on an MIO/UMIO redundant pair cannot be active at the same time. Redundant ports share the
same MAC address, so after a failover is resolved, the original port rejoins the link aggregation group.
same MAC address, so after a failover is resolved, the original port rejoins the link aggregation group.
Redundancy Options
For L2 redundancy set the following option on the master port for use with the whole group:
link-aggregation redundancy standard [hold-time sec ] [preferred slot { card_number |
none }
none }
Standard redundancy treats all cards in the group as one group.
Horizontal Link Aggregation with Two Ethernet Switches
When a LAG contains two sets of ports each connecting to a different switch, the operator has the ability to specify the
slot/port (connected to the destination switch) when switching ports.
slot/port (connected to the destination switch) when switching ports.
The Exec mode link-aggregation port switch to slot/port command configures this option. The slot/port is any valid
port connected to the destination switch. The following criteria apply to the setting of this option:
port connected to the destination switch. The following 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.