ā07-22-2023 11:18 AM
Hi ALL
I have two Cisco 9300X-24Y-E stacked switches. I want to implement etherchannel between my cisco switches with an avaya switch.
After the configurations and the interconnection of the switches, the port-channel goes into "suspended" mode.
Note that the cisco 9300 switch does not allow me to type the command "Switchport trunk encapsulation dot1q".
Need your help to solve this problem which prevents me from evolving in my project.
below is the ports config in etherchannel:
*********************************************
CONFIGURE ETHERCHANNEL LACP
SW_SI_DC_NTX(config)# interface range twentyfiveGigE1/0/23-24,twentyfiveGigE2/0/23-2/0/24
SW_SI_DC_NTX(config-if-range)#channel-protocol lacp
SW_SI_DC_NTX(config-if-range)#channel-group 40 mode active
SW_SI_DC_NTX(config-if-range)# exit
SW_SI_DC_NTX(config)#interface port-channel 40
SW_SI_DC_NTX(config-if)#switchport mode trunk
*********************************************************************
!
interface Port-channel 40
switchport mode trunk
!
interface TwentyFiveGigE1/0/23
switchport mode trunk
channel-protocol lacp
channel-group 40 mode active
!
interface TwentyFiveGigE1/0/24
switchport mode trunk
channel-protocol lacp
channel-group 40 mode active
!
interface TwentyFiveGigE2/0/23
switchport mode trunk
channel-protocol lacp
channel-group 40 mode active
!
interface TwentyFiveGigE2/0/24
switchport mode trunk
channel-protocol lacp
channel-group 40 mode active
!
************************************************************************************
SW_SI_DC_NTX#sh running-config interface port-channel 40
Building configuration...
Current configuration : 68 bytes
!
interface Port-channel 40
switchport mode trunk
duplex full
end
SW_SI_DC_NTX#sh etherchannel summary
Flags: D - down P - bundled 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
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
A - formed by Auto LAG
Number of channel-groups in use: 2
Number of aggregators: 2
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SD) -
40 Po40(SD) LACP Twe1/0/23(D) Twe1/0/24(s)
Twe2/0/23(D) Twe2/0/24(D)
*********************************************************************
SW_SI_DC_NTX#show interfaces twentyFiveGigE 1/0/24
TwentyFiveGigE1/0/24 is up, line protocol is down (suspended)
Hardware is Twenty Five Gigabit Ethernet, address is c02c.17fd.7e98 (bia c02c.17fd.7e98)
MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 10Gb/s, link type is auto, media type is SFP-10GBase-SR
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:19, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 31000 bits/sec, 49 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
3603671 packets input, 382205571 bytes, 0 no buffer
Received 3455251 broadcasts (449542 multicasts)
0 runts, 0 giants, 0 throttles
6 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 449542 multicast, 0 pause input
0 input packets with dribble condition detected
12949 packets output, 1488007 bytes, 0 under runs
Output 0 broadcasts (12949 multicasts)
0 output errors, 0 collisions, 3 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SW_SI_DC_NTX#
Solved! Go to Solution.
ā07-24-2023 04:39 AM
@Flavio Miranda @MHM Cisco World
it looks like the PO is UP.
Can you give me some explanations on the fact that the LACP protocol did not work between the two
ā07-24-2023 04:43 AM
@arouna.kikone1 They are different vendor and they deploy protocols differently. This is very common unfortunatelly. Might have a technical explanation but I dont believe we can find it easilly.
ā07-24-2023 04:47 AM
@Flavio Miranda @MHM Cisco World
do you think that if I add other ports in the channel-group, there will be no loop problem?
ā07-24-2023 04:59 AM
@Flavio Miranda Thanks a lot for your help !!!
You get me out of a bind.
do you think that if I add other ports in the channel-group, there will be no loop problem?
ā07-24-2023 05:08 AM - edited ā07-24-2023 05:09 AM
You are welcome.
No. The port-channel should treat all the interfaces as one, no loop is expected.
ā07-24-2023 05:10 AM
Yes there is LOOP,
the ON mode make port immediate as PO without waiting check the status of SW, AGAIN DONT DO THAT.
ā07-24-2023 05:02 AM
00111101 -> DECODE THIS
1 active LACP
0 long LACP <<- here I think issue, change the timeout in LACP to be long not short
ā07-24-2023 05:09 AM
@MHM Cisco World how can i do that?
ā07-24-2023 05:19 AM
change the avaye LACP timeout to long and check again
ā07-24-2023 05:24 AM
@MHM Cisco World we have already changed the timeout on the avaya side to long but nothing has changed
ā07-24-2023 05:29 AM
change it to long share
show lacp internal
show lacp counter
show lacp neighbor
I run lab config Port mode ON, one port down see what happened to ping. ping failed. as I mention ON mode only use for SW-Server not SW-SW
ā07-24-2023 05:38 AM
@MHM Cisco World ok, let's me do that and I come back to you
ā07-24-2023 05:40 AM
Take your time.
ā07-24-2023 06:05 AM
I have not outputs with
show lacp counter and show lacp neighbor command
SW_SI_DC_NTX#show lacp internal
Flags: S - Device is requesting Slow LACPDUs
F - Device is requesting Fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode
Channel group 40
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Twe1/0/23 SA down 32768 0x28 0x0 0x118 0x4D
Twe1/0/24 SA susp 32768 0x28 0x28 0x119 0x3D
Twe2/0/23 SA down 32768 0x28 0x0 0x218 0x4D
Twe2/0/24 SA down 32768 0x28 0x0 0x219 0x4D
**************************************************************************
SW_SI_DC_NTX#show lacp coun
SW_SI_DC_NTX#show lacp counters
SW_SI_DC_NTX#
SW_SI_DC_NTX#
SW_SI_DC_NTX#
SW_SI_DC_NTX#sh
SW_SI_DC_NTX#show lacp
SW_SI_DC_NTX#show lacp nei
SW_SI_DC_NTX#show lacp neighbor
SW_SI_DC_NTX#
ā07-24-2023 06:16 AM
SW_SI_DC_NTX#show lacp 40 counters
Select lacp PO number
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