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rushlife
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ip neighbor 6.41, interface, discover-interface-list

Sat Jan 06, 2018 8:37 am

Hi folks.
Since ROS 6.41 I was noticed some changes on IP NEIGHBOR.
Before upgrade my ROS, it can be changed every single interface for recieving/transmiting LLDP (l2 neigbor information).
Now I cannot figure out, how I can disable discovering on my "WAN" interfaces and public "WIFI" interfaces...
Can someone help me ?

thx thx thx
 
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rushlife
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Re: ip neighbor 6.41, interface, discover-interface-list

Sat Jan 06, 2018 8:42 am

never mind forget it
I already figured out, it is under / interfaces - list :-)

Hope this will help someone :D
 
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acruhl
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Re: ip neighbor 6.41, interface, discover-interface-list

Sat Jan 06, 2018 4:11 pm

Yeah, someone had to tell me this.

What I found is some interfaces in the list will work, some will not unless I use "all" (which includes the WAN interface which I don't want).

For whatever reason, my bonding1 interface doesn't do ip neighbor if I have it in the discover list. It only works when I use "all".

Seems buggy. Or I'm missing something.
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jo2jo
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Re: ip neighbor 6.41, interface, discover-interface-list

Fri Feb 16, 2018 10:10 pm

I was stumped at first too after 6.41 upgrade, until i found this thread. (perhaps a message in winbox or CLI pointing to new location/use of interface list , even if temporary, would be helpful).

For about a week or 2 i had to settle for Mac-telnet / neighbor info being broadcast on WAN / public interfaces (ROS update to new /ip nei discovery settings seems to reset to ALL interfaces (regardless of prior "old" discovery interface settings).

im supprised i missed this, as i always read the changelogs very closely , b4 any updates.
:beep :beep :beep
 
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acruhl
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Re: ip neighbor 6.41, interface, discover-interface-list

Sat Feb 17, 2018 3:32 pm

I'm replying to myself now.

Something must have been fixed between 6.41 and 6.41.2, but it's still not working exactly how I would expect. This could be my issue and not it's issue.

The interface list generally works how I expect it to (for discovery and mac-server), which was not the case with 6.41. But maybe LLDP is not implemented completely correctly...

For example, if I allow my vlan interface to be part of the neighbor discovery interface list (which is part of my internal LAN), I can do "show lldp neighbor" on my Juniper switch that the MikroTik is attached to and I see the MikroTik as an LLDP neighbor to the Juniper.

However, with this same setting, if I do "/ip neighbor list" on the MikroTik, I don't see the Juniper.

If I add my bonding interface, which is the parent interface of the vlan, I can see 2 Juniper neighbors in "/ip neighbor list" on the bonding interface even though it's 1 switch. This is not so unusual, this is how aggregated interfaces show up between Juniper and Cisco as well. However I only see 1 "bonding" entry and 1 "vlan" entry on the Juniper side. Still no vlan entry on the MIkroTik side. Weird.

This is minor. Maybe the vendors handle lldp identification slightly differently.
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solelunauno
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Re: ip neighbor 6.41, interface, discover-interface-list

Tue Oct 16, 2018 2:42 pm

I noticed that there is a big error in "export compact file=XXXX" , in the "ip neighbor discovery-settings" field.
In order to not activate discovery only on a few interface, I create a list named "no-discovery" and i set ip neighbor discovery-settings to " discover-interface-list: !no-discovery ".
But the file exported, instead, contains:
/ip neighbor discovery-settings
set discover-interface-list=no-discovery
So, if I load this file as is on another device, I lose discovery capability just on the interfaces I wanted it working, and I have discovery on the interface to not discover.
Why this strange behavior?
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ik3umt
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Re: ip neighbor 6.41, interface, discover-interface-list

Wed Feb 27, 2019 12:21 pm

I noticed that there is a big error in "export compact file=XXXX" , in the "ip neighbor discovery-settings" field.
In order to not activate discovery only on a few interface, I create a list named "no-discovery" and i set ip neighbor discovery-settings to " discover-interface-list: !no-discovery ".
But the file exported, instead, contains:
/ip neighbor discovery-settings
set discover-interface-list=no-discovery
So, if I load this file as is on another device, I lose discovery capability just on the interfaces I wanted it working, and I have discovery on the interface to not discover.
Why this strange behavior?

Confirm , still in 6.44 :

/ip neighbor discovery set discover-interface-list=!NODISCOVER
/ip neighbor discovery export
/ip neighbor discovery-settings
set discover-interface-list=NODISCOVER


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