MA-SFP-1GB-TX module in WAN 1 / 2 of MX95

[Holli69]

Hi,

we have a Multi WAN Setup, ISP 1 on MA-SFP-1GB-TX WAN1, ISP 2 on MA-SFP-1GB-TX WAN2, ISP 3 on WAN4 as Backup.

We have observed, that WAN 1+2 fails on come up (up only for a shot time) due to halfduplex (1/10G on local Status page, 1G fixed is the same problem), so the Site comes online with Backup WAN 4 (mGig Port).

Has anyone the same issue with MA-SFP-1GB-TX module in WAN Port 1/2 with Halfdulex ? I think, this is the reason why WAN 1/2 don't come online (should be fullduplex)  

[RWelch]

What MX firmware are you running?  Auto detect is preferred unless there is a compelling reason to change the speed/duplex.

Duplex mismatches affecting physical link speed 

When interconnecting two Ethernet peers, Meraki recommends using auto-negotiation, which allows Ethernet peers to exchange link speed and duplex information. 

Explanation:

Ethernet peers use electrical signals to determine when a link is established. These electrical pulses make up a 16-bit word defining the speed and duplex for auto-negotiation.  If the speed and duplex of one peer must be manually set, it is important to set the other peer with the same settings.

[Holli69]

Hi @RWelch 

we are on MX 19.1.11