Hi,
I have this issue and I have to admit I am not sure what should I do.
So I have Cisco 3750 stack and ASA 5510 I would like to connect through LACP
3750 cross stack 1/0/37 and 2/0/37 -> Port-channel 33
ASA LACP Po2.150
- et0/2
-et0/3
But immediately when I make this configuration I am getting this error
Jun 3 16:21:57: %EC-5-CANNOT_BUNDLE2: Gi2/0/37 is not compatible with Gi1/0/37 and will be suspended (MTU of Gi2/0/37 is 9000, Gi1/0/37 is 1500) (vvlansw06-2)
But as you can see, all interface are setting with MTU 1500.
But if I don't use command "switchport trunk allowed vlan 150" everything works. How is it possible, I need to send through this trunk only this vlan I need to limited number of broadcast.
And how is it possible that this command cause this error ?
C3750
------------------------------
vvlansw06#sh system mtu
System MTU size is 1500 bytes
System Jumbo MTU size is 1500 bytes
System Alternate MTU size is 1500 bytes
Routing MTU size is 1500 bytes
vvlansw06#
interface Port-channel33
description VPN_ASA_HB
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 150
switchport mode trunk
end
interface GigabitEthernet1/0/37
description VPN_ASA_HB
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 150
switchport mode trunk
spanning-tree portfast
channel-group 33 mode active
interface GigabitEthernet2/0/37
description VPN_ASA_HB
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 150
switchport mode trunk
spanning-tree portfast
channel-group 33 mode active
Port-channel33 is up, line protocol is up (connected)
Hardware is EtherChannel, address is e8b7.4852.e3a5 (bia e8b7.4852.e3a5)
Description: VPN_ASA_HB
MTU 1500 bytes, BW 100000 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, link type is auto, media type is unknown
Media-type configured as connector
input flow-control is off, output flow-control is unsupported
Members in this channel: Gi1/0/37
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:01, output hang never
Last clearing of "show interface" counters 4d07h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1006194503
GigabitEthernet1/0/37 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is e8b7.4852.e3a5 (bia e8b7.4852.e3a5)
Description: VPN_ASA_HB
MTU 1500 bytes, BW 100000 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 10/100/1000BaseTX
Media-type configured as connector
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:22, output 00:00:03, output hang never
Last clearing of "show interface" counters 4d07h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 255
GigabitEthernet2/0/37 is up, line protocol is down (suspended)
Hardware is Gigabit Ethernet, address is e8b7.4851.8ba5 (bia e8b7.4851.8ba5)
Description: VPN_ASA_HB
MTU 1500 bytes, BW 100000 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 10/100/1000BaseTX
Media-type configured as connector
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 2y12w, output 00:12:17, output hang never
Last clearing of "show interface" counters 4d07h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 61
Group: 33
----------
Group state = L2
Ports: 2 Maxports = 16
Port-channels: 1 Max Port-channels = 16
Protocol: LACP
Minimum Links: 0
Ports in the group:
-------------------
Port: Gi1/0/37
------------
Port state = Up Mstr Assoc In-Bndl
Channel group = 33 Mode = Active Gcchange = -
Port-channel = Po33 GC = - Pseudo port-channel = Po33
Port index = 0 Load = 0x00 Protocol = LACP
Flags: S - Device is sending Slow LACPDUs F - Device is sending fast LACPDUs.
A - Device is in active mode. P - Device is in passive mode.
Local information:
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Gi1/0/37 SA bndl 32768 0x21 0x21 0x126 0x3D
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Gi1/0/37 SA 32768 a44c.1177.007a 17s 0x0 0x2 0x4 0x3D
Age of the port in the current state: 0d:00h:40m:12s
Port: Gi2/0/37
------------
Port state = Up Cnt-bndl Suspend Not-in-Bndl
Channel group = 33 Mode = Active Gcchange = -
Port-channel = null GC = - Pseudo port-channel = Po33
Port index = 0 Load = 0x00 Protocol = LACP
Flags: S - Device is sending Slow LACPDUs F - Device is sending fast LACPDUs.
A - Device is in active mode. P - Device is in passive mode.
Local information:
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Gi2/0/37 SA susp 32768 0x21 0x0 0x226 0x45
Age of the port in the current state: 0d:00h:20m:57s
Probable reason: MTU of Gi2/0/37 is 9000, Gi1/0/37 is 1500
Port-channels in the group:
---------------------------
Port-channel: Po33 (Primary Aggregator)
------------
Age of the Port-channel = 0d:00h:42m:24s
Logical slot/port = 10/33 Number of ports = 1
HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = LACP
Port security = Disabled
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 00 Gi1/0/37 Active 0
Time since last port bundled: 0d:00h:40m:14s Gi1/0/37
-----------------------
ASA
connect# sh run all | i mtu
mtu VPN 1500
interface Port-channel2
!
interface Port-channel2.150
description LAN/STATE Failover Interface
vlan 150
!
!
interface Ethernet0/2
channel-group 2 mode active
!
interface Ethernet0/3
channel-group 2 mode active
!
Interface Port-channel2 "", is up, line protocol is up
Hardware is EtherChannel/LACP, BW 100 Mbps, DLY 100 usec
Auto-Duplex(Full-duplex), Auto-Speed(100 Mbps)
Input flow control is unsupported, output flow control is off
MAC address a44c.1177.007c, MTU not set
IP address unassigned
Members in this channel:
Active: Et0/3
Inactive: Et0/2
Interface Port-channel2.150 "FAILOVER", is up, line protocol is up
Hardware is EtherChannel/LACP, BW 100 Mbps, DLY 100 usec
VLAN identifier 150
Description: LAN/STATE Failover Interface
MAC address a44c.1177.007c, MTU 1500
IP address 10.90.22.201, subnet mask 255.255.255.248
Traffic Statistics for "FAILOVER":
24310302 packets input, 2489893984 bytes
53074252 packets output, 29470503852 bytes
6090480 packets dropped
Interface Ethernet0/2 "", is up, line protocol is up
Hardware is i82546GB rev03, BW 100 Mbps, DLY 100 usec
Auto-Duplex(Full-duplex), Auto-Speed(100 Mbps)
Input flow control is unsupported, output flow control is off
MAC address a44c.1177.007c, MTU not set
IP address unassigned
1971600089 packets input, 200370000339 bytes, 0 no buffer
Received 437076592 broadcasts, 0 runts, 0 giants
874304559 input errors, 0 CRC, 0 frame, 874304559 overrun, 0 ignored, 0 abort
0 pause input, 0 resume input
0 L2 decode drops
10549967 packets output, 6060935772 bytes, 0 underruns
0 pause output, 0 resume output
0 output errors, 0 collisions, 8 interface resets
0 late collisions, 0 deferred
0 input reset drops, 0 output reset drops, 0 tx hangs
input queue (blocks free curr/low): hardware (255/254)
output queue (blocks free curr/low): hardware (255/253)
Interface Ethernet0/3 "", is up, line protocol is up
Hardware is i82546GB rev03, BW 100 Mbps, DLY 100 usec
Auto-Duplex(Full-duplex), Auto-Speed(100 Mbps)
Input flow control is unsupported, output flow control is off
MAC address a44c.1177.007d, MTU not set
IP address unassigned
1744354887 packets input, 139512113546 bytes, 0 no buffer
Received 535379035 broadcasts, 0 runts, 0 giants
897050895 input errors, 0 CRC, 0 frame, 897050895 overrun, 0 ignored, 0 abort
0 pause input, 0 resume input
0 L2 decode drops
43414310 packets output, 24691626112 bytes, 0 underruns
0 pause output, 0 resume output
0 output errors, 0 collisions, 1 interface resets
0 late collisions, 0 deferred
0 input reset drops, 0 output reset drops, 0 tx hangs
input queue (blocks free curr/low): hardware (255/246)
output queue (blocks free curr/low): hardware (255/238)
------------------
Is there anything else what I can change?
I have the second ASA and second 3750 stack and there is same configuration works.
