Eatherchannel

interface FastEthernet0/13
channel-group 12 mode auto
interface FastEthernet0/14
channel-group 12 mode auto
interface Port-channel12
switchport trunk encapsulation dot1q
switchport mode trunk
sw2
interface FastEthernet0/13
channel-group 21 mode auto
interface FastEthernet0/14
channel-group 21 mode auto
interface Port-channel 21
switchport trunk encapsulation dot1q
switchport mode trunk
===========================
interface FastEthernet0/16
channel-group 13 mode on
interface FastEthernet0/17
channel-group 13 mode on
interface Port-channel13
switchport trunk encapsulation dot1q
switchport mode trunk
sw1(config-if)#do sho etherc
Channel-group listing:
———————-
Group: 12
———-
Group state = L2
Ports: 2   Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol:   PAgP
Group: 13
———-
Group state = L2
Ports: 2   Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol:    -
sw1(config-if)#do sho etherc sum
Flags:  D – down        P – in port-channel
I – stand-alone s – suspended
H – Hot-standby (LACP only)
R – Layer3      S – Layer2
U – in use      f – failed to allocate aggregator
u – unsuitable for bundling
w – waiting to be aggregated
d – default port
Number of channel-groups in use: 2
Number of aggregators:           2
Group  Port-channel  Protocol    Ports
——+————-+———–+———————————————–
12     Po12(SU)        PAgP      Fa0/13(P)   Fa0/14(P)
13     Po13(SU)         -        Fa0/16(P)   Fa0/17(P)
==========
w1(config)#port-channel load-balance ?
dst-ip       Dst IP Addr
dst-mac      Dst Mac Addr
src-dst-ip   Src XOR Dst IP Addr
src-dst-mac  Src XOR Dst Mac Addr
src-ip       Src IP Addr
src-mac      Src Mac Addr
sw1(config)#port-channel load-balance ds
sw1(config)#port-channel load-balance dst-m
sw1(config)#port-channel load-balance dst-mac
sw1(config)#do sho ether load-bal
EtherChannel Load-Balancing Configuration:
dst-mac
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Destination MAC address
IPv4: Destination MAC address
IPv6: Destination MAC address
===================
sw2(config)#port-channel load-balance src-dst-ip
sw2(config)#
sw2(config)#
sw2(config)#do sho etherc load-b
EtherChannel Load-Balancing Configuration:
src-dst-ip
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source XOR Destination MAC address
IPv4: Source XOR Destination IP address
IPv6: Source XOR Destination IP address
===============
interface FastEthernet0/19
channel-group 24 mode desirable
interface FastEthernet0/20
channel-group 24 mode desirable
interface Port-channel24
switchport trunk encapsulation isl
switchport mode trunk
sw4(config-if-range)#do sho etherc prot
Channel-group listing:
———————-
Group: 24
———-
Protocol:  PAgP
sw4(config-if-range)#do sho etherc sum
Flags:  D – down        P – in port-channel
I – stand-alone s – suspended
H – Hot-standby (LACP only)
R – Layer3      S – Layer2
U – in use      f – failed to allocate aggregator
u – unsuitable for bundling
w – waiting to be aggregated
d – default port
Number of channel-groups in use: 1
Number of aggregators:           1
Group  Port-channel  Protocol    Ports
——+————-+———–+———————————————–
24     Po24(SU)        PAgP      Fa0/16(P)   Fa0/17(P)
==================
sw3
interface Port-channel34
switchport trunk encapsulation isl
switchport mode trunk
interface FastEthernet0/19
channel-group 34 mode passive
interface FastEthernet0/20
channel-group 34 mode passive
sw4
interface Port-channel43
switchport trunk encapsulation isl
switchport mode trunk
!
interface FastEthernet0/19
channel-group 43 mode active
!
interface FastEthernet0/20
channel-group 43 mode active
sw3(config-if)#do sho ether
Channel-group listing:
———————-
Group: 31
———-
Group state = L2
Ports: 2   Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol:    -
Group: 34
———-
Group state = L2
Ports: 2   Maxports = 16
Port-channels: 1 Max Port-channels = 16
Protocol:   LACP
sw3(config-if)#do sho ether sum
Flags:  D – down        P – in port-channel
I – stand-alone s – suspended
H – Hot-standby (LACP only)
R – Layer3      S – Layer2
U – in use      f – failed to allocate aggregator
u – unsuitable for bundling
w – waiting to be aggregated
d – default port
Number of channel-groups in use: 2
Number of aggregators:           2
Group  Port-channel  Protocol    Ports
——+————-+———–+———————————————–
31     Po31(SU)         -        Fa0/13(P)   Fa0/14(P)
34     Po34(SU)        LACP      Fa0/19(P)   Fa0/20(P)
=================================
interface Port-channel23
no switchport
ip address 10.1.23.2 255.255.255.0
interface FastEthernet0/16
no switchport
no ip address
channel-group 23 mode on
interface FastEthernet0/17
no switchport
no ip address
channel-group 23 mode on
sw2(config-if)#do sho ether sum
Flags:  D – down        P – in port-channel
I – stand-alone s – suspended
H – Hot-standby (LACP only)
R – Layer3      S – Layer2
U – in use      f – failed to allocate aggregator
u – unsuitable for bundling
w – waiting to be aggregated
d – default port
Number of channel-groups in use: 3
Number of aggregators:           3
Group  Port-channel  Protocol    Ports
——+————-+———–+———————————————–
21     Po21(SU)        PAgP      Fa0/13(P)   Fa0/14(P)
23     Po23(RU)         -        Fa0/16(P)   Fa0/17(P)
24     Po24(SU)        PAgP      Fa0/19(P)   Fa0/20(P)