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Title: How to configure Layer 3 Aggregate Port (Static and Dynamic)? [Print this page]

Author: dongling Time: 2021-6-30 13:52
Title: How to configure Layer 3 Aggregate Port (Static and Dynamic)?

I. Requirements

Enable Layer 3 AP on the ports between two Core switches to expand inter-connection bandwidth and ensure a high available network. Use src-dst-IP load balance method.

II. Network Topology

III. Configuration Tips

1. First, you must create a AP and convert it to a L3 AP, then assign a IP address to it.

2. Convert AP members to L3 ports.

3. Put the AP members in the AP

4. Modify load balance method

Note：You must follow the tips above step by step ,otherwise you could fail to configure L3 AP.

IV. Configuration Steps

SW1：

SW1>enable

SW1#configure terminal

SW1(config)#interface aggregateport 1

SW1(config-if-AggregatePort 1)#no switchport ------>convert AP 1 from L2 to L3

SW1(config-if-AggregatePort 1)#ip address 1.1.1.1 255.255.255.0

SW1(config-if-AggregatePort 1)#exit

SW1(config)#interface range gigabitEthernet 0/23-24 ------>configure a range of interfaces with the same commands

SW1(config-if-range)#no switchport ------>convert AP members to layer 3

SW1(config-if-range)#medium-type fiber

SW1(config-if-range)#port-group 1 mode active ------>put G0/23 and G0/24 in AP 1 in active mode

SW1(config-if-range)#exit

SW1(config)#aggregateport load-balance src-dst-ip ------>put G0/23 and G0/24 in AP 1 in active mode

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SW1(config-if-range)#port-group 1 ------>put G0/23 and G0/24 in AP 1 in static mode

SW1(config-if-range)#end

SW2：

SW2>enable

SW2#configure terminal

SW2(config)#interface aggregateport 1

SW2(config-if-AggregatePort 1)#no switchport

SW2(config-if-AggregatePort 1)#ip address 1.1.1.2 255.255.255.0

SW2(config-if-AggregatePort 1)#exit

SW2(config)#interface range gigabitEthernet 0/23-24

SW2(config-if-range)#no switchport

SW2(config-if-range)#medium-type fiber

SW2(config-if-range)#port-group 1 mode active

SW2(config-if-range)#end

SW2(config)#aggregateport load-balance src-dst-ip

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SW2(config-if-range)#port-group 1

SW2(config-if-range)#end

V. Verification

1. When both ends negotiate to join a AP successfully, system returens the following message:

*Dec 17 13:23:52: %LLDP-4-ERRDETECT: Link aggregation for the port GigabitEthernet 0/23 may not match with one for the neighbor port.

*Dec 17 13:23:52: %LLDP-4-ERRDETECT: Link aggregation for the port GigabitEthernet 0/24 may not match with one for the neighbor port.

*Dec 17 13:23:59: %LACP-5-ATTACH: Interface GigabitEthernet 0/23 attached to AggregatePort 1.

*Dec 17 13:23:59: %LACP-5-ATTACH: Interface GigabitEthernet 0/24 attached to AggregatePort 1.

*Dec 17 13:24:00: %LACP-5-BUNDLE: Interface GigabitEthernet 0/23 joined AggregatePort 1.

*Dec 17 13:24:00: %LACP-5-BUNDLE: Interface GigabitEthernet 0/24 joined AggregatePort 1.

*Dec 17 13:24:02: %LINK-3-UPDOWN: Interface AggregatePort 1, changed state to up.

*Dec 17 13:24:02: %LINEPROTO-5-UPDOWN: Line protocol on Interface AggregatePort 1, changed state to up.

2. How to display status of all AP

3. How to display information of AP 1

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