[c-nsp] Cisco 7600 port-flapping issue

[Peter Persson]

Yep, they are completly fine.

                                           Optical   Optical
           Temperature  Voltage  Current   Tx Power  Rx Power
Port       (Celsius)    (Volts)  (mA)      (dBm)     (dBm)
---------  -----------  -------  --------  --------  --------
Te4/1        39.5       0.00      51.8      -3.2      -2.0

2014-09-22 18:42 GMT+02:00 Wouter Prins <wp at null0.nl>:

> Did you check the optical values?
>
> On 22 September 2014 18:13, Peter Persson <webbax at webbax.se> wrote:
>
>> Hi,
>>
>> I'm having a pretty big issue with a migrationprocess, i will describe how
>> and why we are doing this.
>> We are currently migrating from one site to another in a small city, we
>> want to migrate this as smoothly as possible, so we thought that we could
>> tag all vlans from the old site, to the new, then move all fibres and then
>> move the routing.
>>
>> At the first step we have already run into problems.
>> When we have moved 700 VLANs the machine gets some error that makes port
>> Te4/1 to leave the portchannel and down the port shortly (the other side
>> is
>> still up on linkprotocol)
>>
>> Vlan 2000-2699 is in total holding 7500 mac-addresses, but its far away
>> from hw-limit
>>
>> The port that is flapping, is a routed port and have no traffic.
>> The uplink where the VLANs is tagged on, looks like this:
>>  switchport
>>  switchport trunk encapsulation dot1q
>>  switchport trunk allowed vlan 5,99,2000-2699
>>  switchport mode trunk
>>  mtu 9216
>>  spanning-tree bpdufilter enable (Spanning-tree was added as a
>> troubleshoot
>> option)
>>
>> We have had this problem on two separate machines (we tried to exclude hw
>> and sw error)
>>
>> All logs that appear:
>> Sep 22 17:29:58.139: %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> TenGigabitEthernet4/1, changed state to down
>> Sep 22 17:29:58.155: %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> Port-channel3, changed state to down
>> Sep 22 17:29:58.163: %LINK-3-UPDOWN: Interface Port-channel3, changed
>> state
>> to down
>> Sep 22 17:29:58.183: %LDP-5-SP: 31.xxx.xxx.xx:0: session hold up initiated
>> Sep 22 17:29:59.043: %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> TenGigabitEthernet4/1, changed state to up
>> Sep 22 17:29:59.047: %LINK-3-UPDOWN: Interface Port-channel3, changed
>> state
>> to up
>> Sep 22 17:29:59.051: %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> Port-channel3, changed state to up
>> Sep 22 17:29:59.447: %LDP-5-SP: 31.xxx.xxx.xx:0: session recovery
>> succeeded
>>
>> Old machine is running 7606 with SUP720-3B with 15.2(4)S3a
>> New machine is running 7606 with SUP720-3BXL with 12.2(33)SRD6 (because of
>> memory problems we have in 15.2), but we have also tried with identical HW
>> as the old machine, and got same error.
>>
>> Have someone of you seen this error before, and maybe got a resolution?
>>
>> Regards,
>> Peter
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>
>
>
> --
> Wouter Prins
> wp at null0.nl
>
>