[ixpmanager] Discovered MAC Addresses Issue

[Nick Hilliard (INEX)]

Ahmed Al-Saruri wrote on 03/01/2019 07:39:
> The DB ID = 2 is mapping to 802.1q VLAN 3610 which is used in the 
> Switch. this is what I used in the script as well.

ok, makes sense.

> Here are the results for the snmpwalk:
> 
> % snmpwalk -v 2c -c snmpcomm switchname .1.3.6.1.2.1.17.7.1.2.2.1.2
> SNMPv2-SMI::mib-2.17.7.1.2.2.1.2 = No Such Object available on this 
> agent at this OID

this means that it doesn't support the transparent bridging subtree, but 
it answered to a query about dot1qVlanFdbId, which means that at least 
some parts of the Q-BRIDGE-MIB are supported.  This is confirmed here:

http://support.huawei.com/enterprise/en/doc/EDOC1000062087?section=j011

This is surprising because at least some versions of HP Comware support 
dot1qVlanFdbId.

If you can get Huawei to provide information on how to query their MAC 
forwarding tables via SNMP, we can take a look at implementing this.

> In this situation, what alternatives do you suggest that I can use to 
> discover MAC addresses since I intend to implement Sflow ? Is there 
> another way to add the MAC addresses directly to the database?

Yes, support was added for this immediately after v4.8.0 was released.

There are two separate MAC address tables stored by IXP Manager - 
Discovered addresses (handled by update-l2database.pl) and Configured 
addresses, which are manually configured in the IXP Manager web 
interface, in the main Virtual interface editing page 
(/interfaces/virtual/edit/xxx).  If you click on the entry in the 
"Configured MAC Address(es)" list, this will allow you to add or deleted 
MAC addresses associated with the virtual interface.  Use "+" in the top 
right-hand corner to add new addresses.

To get the sflow to use the Configured MAC address list instead of the 
discovered list, set the following option in ixpmanager.conf:

<ixp>
[...]
macdbtype = configured
</ixp>

Barry is working on v4.9.0, which we're hoping to release in the next 
couple of days, at which point this will be formally supported.

Nick