ExtremeSwitching (EOS)

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Port channel between x440g2 48 p and cisco cat 6500

  • 1.  Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-18-2017 10:55
    i have configured port channel on my cisco and extreme switch but when i connect the interfaces the port channel doesnt come up not sure what i am doing wrong here. please see configuration

    CISCO CONFIG
    ------------------------------------------------------------------------------------------

    interface Port-channel2
    description 7th Floor Copper Trunk Uplinks
    switchport
    switchport trunk encapsulation dot1q
    switchport trunk allowed vlan 1-14,16-20,24-29,31-4094
    switchport mode trunk
    bandwidth 4096000
    no ip address
    logging event link-status
    logging event spanning-tree status
    logging event bundle-status
    logging event trunk-status
    load-interval 30
    snmp ifindex persist
    mls qos trust cos
    spanning-tree portfast trunk
    spanning-tree link-type point-to-point
    end

    interface range GigabitEthernet2/11 - 12
    description 7th Floor Copper Uplink 1
    switchport
    switchport trunk allowed vlan 1-14,16-20,24-29,31-4094
    switchport mode trunk
    no ip address
    logging event link-status
    logging event spanning-tree status
    logging event bundle-status
    logging event trunk-status
    load-interval 30
    keepalive 30
    mls qos trust cos
    spanning-tree portfast trunk
    spanning-tree link-type point-to-point
    channel-protocol pagp
    channel-group 2 mode desirable
    end

    EXOS CONFIG
    -------------------------------------------------------------------------------------------------
    enable sharing 1:2 grouping 1:2,3:48 algorithm address-based L2

    sh sharing detail
    Load Sharing Monitor
    Config Current Agg Min Ld Share Dist Ld Share Agg Link Link Up
    Master Master Control Active Algorithm Flags Group Mbr State Transitions
    ================================================================================
    1:2 1:2 Static 1 L2 A 1:2 Y A 5
    L2 3:48 - R 1
    ==============================================================================


  • 2.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-18-2017 11:53
    Hi,

    Pagp is a Cisco proprietary protocol it is not support by any other vendor, you need to configure the Cisco with LACP.

    Regards


  • 3.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-18-2017 12:09
    Lutha,
    please note if you need to configure the exos side for lacp as well as it looks like it is currently setup as a static lag

    the following article should be able to help you achieve this:
    https://gtacknowledge.extremenetworks.com/articles/How_To/how-to-configure-sharing-LAG-LACP-in-Summi...

    Regards,


  • 4.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-19-2017 15:05
    HI Guys

    I have tried below configuration and port channel still doesnt work
    ================================================================

    interface Port-channel 3
    description 7th Floor Copper Trunk Uplinks
    switchport
    switchport trunk encapsulation dot1q
    switchport trunk allowed vlan 1-14,16-20,24-29,31-4094
    switchport mode trunk
    bandwidth 4096000
    no ip address
    logging event link-status
    logging event spanning-tree status
    logging event bundle-status
    logging event trunk-status
    load-interval 30
    snmp ifindex persist
    mls qos trust cos
    spanning-tree portfast trunk
    spanning-tree link-type point-to-point
    end

    interface range GigabitEthernet3/7 - 8
    description 7th Floor Copper Uplink 3
    switchport
    switchport trunk allowed vlan 1-14,16-20,24-29,31-4094
    switchport mode trunk
    no ip address
    logging event link-status
    logging event spanning-tree status
    logging event bundle-status
    logging event trunk-status
    load-interval 30
    keepalive 30
    mls qos trust cos
    spanning-tree link-type point-to-point
    channel-group 3 mode active
    end

    on extreme side
    enable sharing 1:2 grouping 1:2,3:48 algorithm address-based L2 lacp

    m at my wits end now m not sure where i go wrong

    Can a member kindly share their port channel configs between cisco device and extreme.

    Thanks



  • 5.  RE: Port channel between x440g2 48 p and cisco cat 6500



  • 6.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-20-2017 06:25
    I have checked the logs and theres no error like this

    LACPDU. Actor: System ID 0x0000, 00-04-96-44-05-d0; Key 0x0efd; Port ID 0x0000, 0x0fea; State 0x0d. Partner: System ID 0x8000, ca-fe-22-42-be-ef; Key 0x0001; Port ID 0x8000, 0x0001; State 0x04. Collector: Max delay 0.

    or any error to do with port-channeling

    only message i see in logs is the below

    12/19/2017 17:58:06.54 [i] Slot-1: Port 3:48 link down
    12/19/2017 17:57:10.14 [i] Slot-1: Port 1:2 is UP with speed 1000, Add to aggregator 1:2 with speed: 1000
    12/19/2017 17:57:10.14 [i] Slot-1: Port 1:2 link UP at speed 1 Gbps and full-duplex
    12/19/2017 17:56:47.69 [i] Slot-1: Port 3:48 is UP with speed 1000, Add to aggregator 1:2 with speed: (down)
    12/19/2017 17:56:47.69 [i] Slot-1: Port 3:48 link UP at speed 1 Gbps and full-duplex
    12/19/2017 17:56:37.49 [i] Slot-1: Port 3:48 is Down, remove from aggregator 1:2
    12/19/2017 17:56:37.49 [i] Slot-1: Port 3:48 link down
    12/19/2017 17:41:27.45 [i] Slot-1: Port 3:48 is UP with speed 1000, Add to aggregator 1:2 with speed: (down)
    12/19/2017 17:41:27.45 [i] Slot-1: Port 3:48 link UP at speed 1 Gbps and full-duplex

    A few seconds after plugging the second port the switch starts to slow down in between commands as soon as i disable the port the switch runs normally again



  • 7.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-20-2017 06:25
    Sounds like a loop and the port channel isn't working. I noticed on port 3 on the cisco you don't have this command: channel-group 3 mode active. Does that command need to be on that interface?


  • 8.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-20-2017 06:25
    the port-channel does not take the command. the command is applied to the individual ports the will be joining the port channel which is nterface range GigabitEthernet3/7 - 8


  • 9.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-20-2017 06:25
    You would see log messages about an invalid LACP system ID on the Cisco switch, not the Extreme switch.


  • 10.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-21-2017 08:42
    Is there another method of acheiving this between cisco and extreme


  • 11.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-21-2017 08:42
    Since the switches slow down after activating both links there seems to be a significant problem, thus if you try to use a static LAG, you would probably make the situation worse.


  • 12.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-21-2017 09:44
    Hi Lutha

    This is what i have on my switches and the port channel works

    on cisco side:
    interface Port-channel20 description SCPDA010200 switchport switchport trunk native vlan 999 switchport trunk allowed vlan 100,113,201,300,400,501,601,613,1000,1200 switchport mode trunk logging event link-status storm-control broadcast include multicast storm-control broadcast level 2.00 spanning-tree guard loop ip dhcp snooping trust end [/code]interface TenGigabitEthernet1/14
    description SCPDAA010200 3:49
    switchport trunk native vlan 999
    switchport trunk allowed vlan 100,113,201,300,400,501,601,613,1000,1200
    switchport mode trunk
    logging event link-status
    storm-control broadcast include multicast
    storm-control broadcast level 2.00
    channel-group 20 mode active
    spanning-tree guard loop
    ip dhcp snooping trust
    end [/code]interface TenGigabitEthernet1/13
    description SCPDAA010200 2:49
    switchport trunk native vlan 999
    switchport trunk allowed vlan 100,113,201,300,400,501,601,613,1000,1200
    switchport mode trunk
    logging event link-status
    storm-control broadcast include multicast
    storm-control broadcast level 2.00
    channel-group 20 mode active
    spanning-tree guard loop
    ip dhcp snooping trust
    end[/code]
    on Extreme side:
    enable sharing 2:49 grouping 2:49,3:49 algorithm address-based L2 lacp [/code]If you are using fiber you should configure the guard loop also by default on MSTP and RSTP the link types are point-to-point.

    Hope this helps

    Regards


  • 13.  RE: Port channel between x440g2 48 p and cisco cat 6500

    Posted 12-22-2017 15:17
    Hi Lutha,

    you should verify that the links are connected the way you want. You could enable LLDP on both the Cisco and Extreme switches, enable just one of the links, and then verify LLDP neighbors on both switches, and verify LACP information received on both switches.

    Then you disable this port again and enable the other port. There you perform the same checks.

    After that you closely examine the the LLDP and LACP information, as well as the logs of both switches, if everything is OK.

    Since you seem to be using STP, you should verify STP operation as well.

    Your configuration looks OK on first glance, I have not yet experienced problems with LACP between Cisco IOS and EXOS switches. Thus I'd say you need to dig deeper to find the root cause.

    Thanks,
    Erik