use the interface range command and add ports into a channel...
dsw2(config)#int rang f0/1 - 2
dsw2(config-if-range)#channel-group 1 mode on
dsw2(config-if-range)#end
i usually make the ports trunks first on both ends in case i want to revert back, but that's an option
and in the case below i gave the port channel an ip address
dsw2#sh run int po1
Building configuration...
Current configuration : 84 bytes
!
interface Port-channel1
no switchport
ip address 10.2.4.14 255.255.255.252
end
there isn't any single way to make the channel, and negotiation protocols are an option as well, such as pagp and lacp...
dsw2#sh int port-channel1
Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 000b.5fc9.0000 (bia 000b.5fc9.0000)
Internet address is 10.2.4.14/30
MTU 1500 bytes, BW 200000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
note the aggregate bandwidth... understanding the protocols and when to use them, esp. lacp is vital...
make the ports into trunks first (i think thats best) then channelize them...
asw2#config t
Enter configuration commands, one per line. End with CNTL/Z.
asw2(config)#int range f0/5 -6
asw2(config-if-range)#sw mode trunk
asw2(config-if-range)#channel-g 1 mode on
Creating a port-channel interface Port-channel 1
note they are suspended because i didn't want to connect them, but they show as members of po1... i hope that doesn't confuse you, i haven't had any coffee yet...
asw2#sh int f0/5 sw
Name: Fa0/5
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down (suspended member of bundle Po1)
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: On
asw2#sh int f0/6 sw
Name: Fa0/6
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down (suspended member of bundle Po1)
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: On
the channel is not a trunk... the port channel is an aggregation of 2 or more links... a trunk behaves much differently due to stp... like the output below... f0/1 -2 are channelized whereas f0/3 - 4 are trunked on dsw2... stp is in effect on the trunks only...
dsw2#sh spann
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address 0009.b73f.ce80
Cost 19
Port 3 (FastEthernet0/3)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 000b.5fc9.0000
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/3 Root FWD 19 128.3 P2p
Fa0/4 Desg FWD 19 128.4 P2p
dsw2#sh int po1
Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 000b.5fc9.0000 (bia 000b.5fc9.0000)
Internet address is 10.2.4.14/30
MTU 1500 bytes, BW 200000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
Members in this channel: Fa0/1 Fa0/2
No comments:
Post a Comment