[ixpmanager] Discovered MAC Addresses Issue

[Ahmed Al-Saruri]

Hello  Nick,

Thank you very much for your support.

I have done some more checks in the debug mode and  I noticed the results
as described below.

Could you please let me know if I am missing something?


Results :

1- When I specify vlan ID so only MAC addresses of that vlan are
discovered, it fails and goes for  BRIDGE-MIB instead:

/usr/local/bin/update-l2database.pl --vlanid 2 --debug

DEBUG: xxx: started query process
DEBUG: xxx: pre-emptively trying Juniper jnxExVlanTag to see if we're on a
J-EX box (.1.3.6.1.4.1.2636.3.40.1.5.1.5.1.5)
DEBUG: xxx: this isn't a Juniper EX
DEBUG: xxx: this isn't a Juniper running an ELS image
DEBUG: xxx: attempting to retrieve dot1qVlanFdbId mapping
(.1.3.6.1.2.1.17.7.1.4.2.1.3)
DEBUG: xxx: got mapping index: 3610 maps to 3610
DEBUG: xxx: attempting Q-BRIDGE-MIB (.1.3.6.1.2.1.17.7.1.2.2.1.2.3610)
DEBUG: xxx: failed to retrieve Q-BRIDGE-MIB. falling back to BRIDGE-MIB
DEBUG: xxx: attempting BRIDGE-MIB (.1.3.6.1.2.1.17.4.3.1.2)
DEBUG: xxx: BRIDGE-MIB query successful

2- When I run the script with no vlan id specified it detects around 270
MAC addresses only while the switch has around 2000 MAC:

 $l2mapping = {
 'xxxS6720' => {
                                       'XGigabitEthernet0/0/18' => [
                                                                     'xx'
                                                                   ],
                                       'XGigabitEthernet0/0/24' => [
                                                                     'xx'
                                                                   ],
                                       'XGigabitEthernet0/0/21' => [
                                                                     'xx',
                                                                     'xx'
                                                                   ],
                                       'XGigabitEthernet0/0/3' => [
                                                                    'xx'
                                                                  ],
                                       'XGigabitEthernet0/0/28' => [
                                                                     'xx'
                                                                   ],
                                       'Eth-Trunk10' => [
                                                          'xx',
                                                          'xx'
                                                        ],
                                       'XGigabitEthernet0/0/17' => [
                                                                     'xx'
                                                                   ],
                                       'XGigabitEthernet0/0/25' => [
                                                                     'xx'
                                                                   ],
                                       'XGigabitEthernet0/0/11' => [
                                                                     'xx',
                                                                     'xx'
                                                                   ],
                                       'Eth-Trunk0' => [
                                                         'xx',
                                                         'xx',
                                                         'xx',
                                                         250 ---> MAC
addresses are detected
                                                       ],
                                       'XGigabitEthernet0/0/29' => [
                                                                     'xx'
                                                                   ]
                                     }
        };

On Mon, Dec 31, 2018 at 12:59 PM Nick Hilliard (INEX) <nick at inex.ie> wrote:

> Hi Ahmed,
>
> Ahmed Al-Saruri wrote on 31/12/2018 05:55:
> > Hello Team,
> >
> > I have an issue detecting all interfaces MAC addresses with the script
> > "update-l2database.pl". Only few random interfaces MAC addresses are
> learned.
> >
> > The switch has around 2000 MAC address. Only 250 MAC addresses are with
> > IX VLAN.
> >
> > I have successfully managed to poll and detect MAC addresses
> > successfully from a similar switch but with less MAC addresses learned.
> >
> > Therefore, I am wondering if there are any MAC address limitations with
> > the script or if you could assist in this matter.
>
> there are no limits in the script, and it should ignore unknown MAC
> addresses. Usually problems like this are caused by not configuring the
> interface type correctly in IXP Manager (Switches / Switch Ports).
>
> You can see what's happening in this script by using the "--debug" CLI
> parameter.
>
> Normally we would recommend having dedicated hardware for an IXP.
>
> Nick
>


-- 

Warm Regards,
Ahmed Alsaruri
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