Shulou(Shulou.com)06/01 Report--

Lab name: Port aggregation configuration

The purpose of the experiment is to understand how port aggregation works and how to configure port aggregation on the switch.

Experimental principle: Port aggregation (Aggregate-port), also known as link aggregation, refers to the physical transfer of multiple ports between two switches

Connect and aggregate multiple links into a single logical link. So as to increase the link bandwidth and solve the problem of bandwidth introduction in the switching network.

The problem of network bottleneck. Multiple physical links can be backed up redundant to each other, and any one of them will not be affected if it is disconnected.

Forward data normally in response to other links.

Port aggregation follows the standards of the IEEE 802.3ad protocol.

Experimental equipment: two switches (one for each layer 3 and layer 2) and two computers (configuration spanning tree information)

The steps of the experiment:

Step 1: configure the hostnames and management IP addresses of the two switches

S3750#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

S3750 (config) # hostname L3-SW

L3-SW (config) # interface vlan 1

L3-SW (config-if) # Dec 3 01:03:22 L3-SW% 7:%LINE PROTOCOL CHANGE:

Interface VLAN 1, changed state to UP

L3-SW (config-if) # ip address 192.168.1.1 255.255.255.0

L3-SW (config-if) # no shutdown

L3-SW (config-if) # exit

Switch#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Switch (config) # hostname L2-SW

L2-SW (config) # interface vlan 1

L2-SW (config-if) # ip address 192.168.1.2 255.255.255.0

L2-SW (config-if) # no shutdown

L2-SW (config-if) # exit

Step 2: configure aggregation ports on both switches

L3-SW (config) # interface range fastEthernet 0amp 1-2

L3-SW (config-if-range) # port-group 1

! Add port Fa0/1~2 to aggregation port 1 and create the aggregation port

L3-SW (config-if-range) # Dec 3 01:03:57 L3-SW% 7:%LINE PROTOCOL CHANGE:

Interface AggregatePort 1, changed state to UP

Dec 3 01:03:58 L3-SW% 7:%LINK CHANGED: Interface FastEthernet 0swap 1, changed

State to administratively down

Dec 3 01:03:58 L3-SW% 7:%LINE PROTOCOL CHANGE: Interface FastEthernet

0/1, changed state to DOWN

Dec 3 01:03:58 L3-SW% 7:%LINK CHANGED: Interface FastEthernet 0lap 2, changed

State to administratively down

L3-SW (config-if-range) # exit

L3-SW (config) #

L2-SW (config) # interface range fastEthernet 0amp 1-2

L2-SW (config-if-range) # port-group 1

! Add port Fa0/1~2 to aggregation port 1 and create the aggregation port

L2-SW (config-if-range) # exit

L2-SW (config) #

Step 3: set the aggregation port to Trunk

L3-SW (config) # interface aggregateport 1

L3-SW (config-if) # switchport mode trunk

L3-SW (config-if) # exit

L3-SW (config) #

L2-SW (config) # interface aggregatePort 1

L2-SW (config-if) # switchport mode trunk

L2-SW (config-if) # exit

L2-SW (config) #

Step 4: set the load balancing mode of the aggregation port

L3-SW (config) # aggregateport load-balance?

! View the load balancing methods supported by the switch

Dst-ip Destination IP address

Dst-mac Destination MAC address

Ip Source and destination IP address

Src-dst-mac Source and destination MAC address

Src-ip Source IP address

Src-mac Source MAC address

L3-SW (config) # aggregateport load-balance dst-mac

! Set the load balancing method to be based on the destination address. The default is based on the source and destination addresses.

L3-SW (config) # exit

L2-SW (config) # aggregatePort load-balance?

! View the load balancing methods supported by the switch

Dst-mac Destination MAC address

Ip Source and destination IP address

Src-mac Source MAC address

L2-SW (config) # aggregatePort load-balance dst-mac

! Set the load balancing method to be based on the destination address. The default is based on the source address.

L2-SW (config) # exit

Step 5: view the configuration of the aggregation port

L3-SW#show aggregatePort load-balance

Load-balance: Destination MAC

L3-SW#

L3-SW#show aggregatePort summary

AggregatePort MaxPorts SwitchPort Mode Ports

Ag1 8 Enabled TRUNK Fa0/1, Fa0/2

L3-SW#

L3-SW#show interfaces aggregateport 1

Index (dec): 29 (hex): 1D

AggregatePort 1 is UP, line protocol is UP

Hardware is Aggregate Link AggregatePort

Interface address is: no ip address

MTU 1500 bytes, BW 1000000 Kbit

Encapsulation protocol is Bridge, loopback not set

Keepalive interval is 10 sec, set

Carrier delay is 2 sec

RXload is 1, Txload is 1

Queueing strategy: WFQ

Switchport attributes:

Interface's description: ""

Medium-type is copper

Lastchange time:337 Day: 1 Hour: 3 Minute:56 Second

Priority is 0

Admin duplex mode is AUTO, oper duplex is Full

Admin speed is AUTO, oper speed is 100M

Flow control admin status is AUTO,flow control oper status is OFF

Broadcast Strom Control is OFF,multicast Strom Control is OFF,unicast Strom

Control is OFF

Aggregate Port Informations:

Aggregate Number: 1

Name: "AggregatePort 1"

Refs: 2

Members: (count=2)

FastEthernet 0/1 Link Status: Up

FastEthernet 0/2 Link Status: Up

L3-SW#

L2-SW#show aggregatePort load-balance

Load-balance: Destination MAC address

L2-SW#

L2-SW#show aggregatePort summary

AggregatePort MaxPorts SwitchPort Mode Ports

Ag1 8 Enabled Trunk Fa0/1, Fa0/2

L2-SW#

L2-SW#show interfaces aggregatePort 1

Interface: AggregatePort 1

Description:

AdminStatus: up

OperStatus: up

Hardware:-

Mtu: 1500

LastChange: 0d:0h:0m:0s

AdminDuplex: Auto

OperDuplex: Full

AdminSpeed: Auto

OperSpeed: 100

FlowControlAdminStatus: Off

FlowControlOperStatus: Off

Priority: 0

Broadcast blocked: DISABLE

Unknown multicast blocked: DISABLE

Unknown unicast blocked: DISABLE

L2-SW#

Step 6: verify the configuration

Configure another VLAN 10 for testing on layer 3 switch L3-SW and configure the IP address as

192.168.10.1 Compact 24, then configure the default gateway on the layer 2 switch L2-SW, which acts as the gateway for the host

The switch can submit packets destined for other network segments to the gateway for processing), so that L2-SW can ping

192.168.1.1 hand 24 and 192.168.10.1 pick 24, indicating that the Trunk configuration of the aggregation port has taken effect.

L3-SW (config) # vlan 10

L3-SW (config-vlan) # exit

L3-SW (config) #

L3-SW (config) # interface vlan 10

L3-SW (config-if) # iDec 3 01:16:02 L3-SW% 7:%LINE PROTOCOL CHANGE:

Interface VLAN 10, changed state to UP

L3-SW (config-if) # ip address 192.168.10.1 255.255.255.0

L3-SW (config-if) # no shutdown

L3-SW (config-if) # exit

L2-SW (config) # ip default-gateway 192.168.1.1

! Set the default gateway of the layer 2 switch

L2-SW (config) # exit

L2-SW#

L2-SW#ping 192.168.1.1

Sending 5, 100-byte ICMP Echos to 192.168.1.1

Timeout is 2000 milliseconds.

!

Success rate is 100 percent (5Compact 5)

Minimum = 1ms Maximum = 1ms, Average = 1ms

L2-SW#ping 192.168.10.1

Sending 5, 100-byte ICMP Echos to 192.168.10.1

Timeout is 2000 milliseconds.

!

Success rate is 100 percent (5Compact 5)

Minimum = 1ms Maximum = 1ms, Average = 1ms

Ping layer 2 switch L2-SW on layer 3 switch L3-SW for a long time, and then disconnect the

Fa0/2 Port:

L3-SW#ping 192.168.1.2 ntimes 1000

Sending 1000, 100-byte ICMP Echoes to 192.168.1.2, timeout is 2 seconds:

< press Ctrl+C to break >

! !

! !

! !

! !

! !

! !

! !

!!!

Success rate is 100 percent (1000amp 1000), round-trip min/avg/max = 1-1-10 ms

You can see that there is no packet loss when disconnecting the Fa0/2 port in the aggregation port. Try again, disconnect Fa0/1 this time

Port:

L3-SW#ping 192.168.1.2 ntimes 1000

Sending 1000, 100-byte ICMP Echoes to 192.168.1.2, timeout is 2 seconds:

< press Ctrl+C to break >

! !

! !

! !

! !

! !

!.! !

! !

!!!

Success rate is 99 percent (999amp 1000), round-trip min/avg/max = 1-1-10 ms

Experimental process diagram:

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