Configuring Port Channel on Cisco 2960S-48LPS-L

When I try to move port channel connections to two of the SFP ports on our Cisco 2960S switch, one of the connections fail.
I am using two GBics, both are the same, GLC-T-A 1000Base-T.
The port channel work fine when I use g1/0/47 and 48.
The port channel work fine when using g1/0/48 and SFP 1/0/49
Port channel does not work when using SFP 1/0/49 and SFP 1/0/50.

Cisco C2960S software version: 12.2(55)SE7. Using C2960S-UNIVERSALK9-M.
Port configurations for g1/0/48 - 51:
interface GigabitEthernet1/0/49
description Trunk to Cisco Core
switchport mode trunk
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust cos
macro description cisco-switch
auto qos trust
spanning-tree link-type point-to-point
channel-group 2 mode on
When working, both ports show green status lights.
ort      Name               Status       Vlan       Duplex Speed Type
Po2       Trunk to Core      connected    trunk      a-full a-1000
*: interface is up
IHQ: pkts in input hold queue     IQD: pkts dropped from input queue
OHQ: pkts in output hold queue    OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec)          RXPS: rx rate (pkts/sec)
TXBS: tx rate (bits/sec)          TXPS: tx rate (pkts/sec)
TRTL: throttle count
Interface               IHQ   IQD OHQ   OQD RXBS RXPS TXBS TXPS TRTL
* Port-channel2            0     0    0     0 8390000 909 970000 551    0
Age of the Port-channel   = 0d:10h:57m:35s
Logical slot/port   = 5/2          Number of ports = 2
GC                  = 0x00000000      HotStandBy port = null
Port state          = Port-channel Ag-Inuse
Protocol            =    -
Port security       = Disabled
Ports in the Port-channel:
Index   Load   Port     EC state        No of bits
------+------+------+------------------+-----------
0     00     Gi1/0/47 On                 0
0     00     Gi1/0/49 On                 0
When not working, one port shows green, then other port status light is off.
GigabitEthernet1/0/49 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 3c0e.233f.a531 (bia 3c0e.233f.a531)
Description: Trunk to Cisco Core
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:09, output 00:00:19, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1954000 bits/sec, 213 packets/sec
5 minute output rate 38000 bits/sec, 16 packets/sec
     2935639 packets input, 880524431 bytes, 0 no buffer
     Received 2211794 broadcasts (310067 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 310067 multicast, 0 pause input
     0 input packets with dribble condition detected
             370489 packets output, 66729219 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     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
GigabitEthernet1/0/50 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is 3c0e.233f.a532 (bia 3c0e.233f.a532)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex, Auto-speed, link type is auto, media type is Not Present
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     0 packets output, 0 bytes, 0 underruns
--More--              0 output errors, 0 collisions, 1 interface resets
     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
Let me know if you need more info.

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https://tools.cisco.com/bugsearch/bug/CSCtq62715/?reffering_site=dumpcr
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Hello Yaplej,
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If you do not have any other question please mark the question as answered

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------+-------------+-----------+-----------------------------------------------
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Hi,
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If device is externally calibrated, only calibrated values are printed.
++ : high alarm, + : high warning, - : low warning, -- : low alarm.
NA or N/A: not applicable, Tx: transmit, Rx: receive.
mA: milliamperes, dBm: decibels (milliwatts).
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Port       (Celsius)    (Volts) (dBm)     (dBm)
Gi1/0/26     25.2       3.31      -5.1     -28.5
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Hi All,
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Error log:
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Cisco TAC analyse the issue under 629566213 but their initial advices was not much experience oriented.
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switch 6 frulink reload
Janaka Wellege Bsc.Eng
University of Peradeniya.

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I need to increase the link capacity of 10GE to 20GE between two Cisco7609, so I feel the need to configure port channel between them, my little problem is that I have a SCE 8080 in the middle of both 7600 currently is configured inline.
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Hi there,
I do not think so you need port channel, you can have two links going to two 10G ports on one SCE. The only thinkg you need to take care of is:
http://www.cisco.com/en/US/docs/cable/serv_exch/serv_control/broadband_app/rel38x/sce8000_cli_ref/CLI_Ref_1.html#wp2376046
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I was hoping that someone could over some suggestions on best practice or recommendations for configuring port channel to bundle to layer 2 MPLS links that we have.
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I had initially just configured a simple port channel bundling the two ports on "Switch A", and the same on "Switch B". However I have since noticed that one of the ports was put into error disabled state, and I have my doubts that we ever had 200Mbps throughput over the portchannel.
The logs showed:
UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Gix/x/x, aggressive mode failure detected
%PM-4-ERR_DISABLE: udld error detected on Gix/x/x, putting Gix/x/x in err-disable state
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For the time being I have removed the port channel config and re-opened all the ports, so I believe one of the ports is now in blocking state.
Whilst redundancy for these links is great, ideally I would like to have the links bundled so I also get the benefit of higher throughput.
Any thoughts are greatly appreciated.
Thank you

Hi,
Thank you for your reply and suggestions. I have been reading up on layer 2 protocol tunnelling and I'm not sure if this will work for us. According to these guidelines for the catalyst 3550 (http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12-1_19_ea1/configuration/guide/3550scg/swtunnel.html#wp1006657) it states:
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•Tunneling is not supported on trunk ports. If you enter the l2protocol-tunnel interface configuration command on a trunk port, the command is accepted, but Layer 2 tunneling does not take affect unless you change the port to a tunnel port or an access port.
•EtherChannel port groups are compatible with tunnel ports when the 802.1Q configuration is consistent within an EtherChannel port group.
(maybe its a different and is supported on 3850's)
Also, I cant use layer 3 over this link as I am looking to extend VLANs over the link so devices and virtual machines in each of the datacentre are in the same subnet and broadcast domain.
I will speak with the supplier to see what they are willing to do.
Thanks again.

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So everything I've read on Cisco's documentation here: http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/interface_start.html#wp1329030 says that I can create a port-channel on two physical interfaces that will uplink to a VSS pair. However, the command is not recognized. What am I missing? I've tried executing "channel-group #" on the physical interface and tried creating the port-channel 1st and neither commands exist. I haven't seen it listed anywhere if it is only available after a specific piece of ASA software. If it is the software would someone know what version at a minimum I need to upgrade to? Below is an output from a show version
Cisco Adaptive Security Appliance Software Version 8.0(4)
Device Manager Version 6.1(3)
Compiled on Thu 07-Aug-08 20:53 by builders
System image file is "disk0:/asa804-k8.bin"
Config file at boot was "startup-config"
########### up 43 days 23 hours
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Internal ATA Compact Flash, 256MB
BIOS Flash Firmware Hub @ 0xffe00000, 1024KB
Encryption hardware device : Cisco ASA-55x0 on-board accelerator (revision 0x0)
Boot microcode : CN1000-MC-BOOT-2.00
SSL/IKE microcode: CNLite-MC-SSLm-PLUS-2.03
IPSec microcode : CNlite-MC-IPSECm-MAIN-2.05

Hi,
You need software 8.4(1) atleast to be able to configure Port Channel / Etherchannel
Here is the section from the command reference which states this
http://www.cisco.com/en/US/docs/security/asa/asa84/command/reference/i3.html#wp1932200
Naturally in your case if you were to upgrade the ASA to 8.4(x) software it would mean that NAT configuration format would be totally different compared to your software version of 8.0.
- Jouni

Port-channel issue with FI-N7k using rate-mode share

Hi Dears,
I'm trying to using port-channel between Fabric Interconnect (FI) and N7K. in N7K use rate-mode share and LACP but the port-channel in N7K was suspended.
I was trying :
1. I using non dedicated port in Nexus 7010.
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when i using this option, the port-channel in Nexus 7010 was suspended
2. I using non dedicated port in Nexus 7010
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when i using this option, the port-channel in Nexus 7010 was came up, but in Fabric interconnect was failed.
3. I using dedicated port in Nexus 7010
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when i using this option, the port-channel in Nexus 7010 was suspended
4. I using dedicated port in Nexus 7010
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     - switchport mode trunk
when i using this option, the port-channel in Nexus 7010 was came up and running well.
is any other way to configure port-channel in N7K with rate-mode share and LACP ?
or it's some of limitation in port-channel when using rate-mode share at N7K ?
nb: fabric interconnect only support LACP and cannot be configurable.
regards,
Berwin H

HI Mark,
1. Can you please check your ethernet card ...where this port channel connected..on the server.
    may be there are 2 different card.
2. from cisco websites:
Error Message
Explanation
This port has different port attributes than other ports within the port channel.
Recommended Action
Match the port attributes to that of the port channel.
Regards
Please rate if it helps.
Match the port attributes to that of the port channel.This port has different port attributes than other ports within the port channel.
EC-5-CANNOT_BUNDLE_LACP: [char] is not compatible with aggregators in
channel [dec] and cannot attach to them ([char])

Configuring Port Channel on Cisco 2960S-48LPS-L

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