ADC MPX : Interface remains DOWN when using fiber optic media types with speed set to autonegotiation

ADC MPX : Interface remains DOWN when using fiber optic media types with speed set to autonegotiation

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Article ID: CTX338499

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Updated On:

Description

In Citrix ADC MPX when the fiber optic media types are used with speed set to auto-negotiation, the interface does not come up properly and the interface state is shown as DOWN.

Resolution

To resolve the issue, the MPX interface speed for Fortville & Mellanox NICs (10G/40G/50G/100G) is to be set manually if fiber optic media types are used

Perform the following steps to set speed to 100G,

* > set int 100/1 speed 100000
Done

> sh int 100/1
      Interface 100/1 (100G Ethernet, CR4, 100 Gbit) #6 
        flags=0xc020 <ENABLED, UP, UP, autoneg, HAMON, HEARTBEAT, 802.1q>
        MTU=9216, native vlan=1, MAC=24:8a:07:5b:14:50, uptime 0h00m16s
        Requested: media AUTO, speed 100000, duplex AUTO, fctl OFF,
                 throughput 0
        Actual: media UTP, speed 100000, duplex FULL, fctl OFF, throughput 100000
        LLDP Mode: NONE,                 LR Priority: 1024

        RX: Pkts(30612) Bytes(2301661) Errs(0) Drops(24614) Stalls(0)
        TX: Pkts(72) Bytes(3024) Errs(0) Drops(0) Stalls(0)
        NIC: InDisc(0) OutDisc(0) Fctls(0) Stalls(0) Hangs(0) Muted(0)
        Bandwidth thresholds are not set.

Done

Problem Cause

Fiber optic media types may encounter noninteroperable signaling when auto-negotiation is enabled, leading to interfaces remaining down.
The recommendation is to set specific and the same interface speeds at both ends of a connection when using fiber optic media