Questions tagged “25g”

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CCR2004-1G-12S+2XS SFP28 ports stay at no-link with 5 m Solid Optics 25G DACs to an FS S5860-20SQ

Two Solid Optics SFP-H25GB-CU5M SFP28 DACs between a MikroTik CCR2004-1G-12S+2XS and an FS S5860-20SQ switch produced status: no-link on sfp28-1 and sfp28-2 with auto-negotiation off, 25 Gbps, full duplex, FEC91 and no flow control; RouterOS 7.8rc1 was tried on vendor advice. The modules were…

edgewolf25 EG asked 9 days ago

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Diagnosing a ConnectX-4 port with link but no traffic and 25G optics negotiating only 1G on a MikroTik switch

With two dual-port Mellanox ConnectX-4 cards, a MikroTik SFP+ switch, 1 m OM4 patches and mixed 10G/25G transceivers from several vendors, one NIC port showed link UP but got no DHCP and could not route, 25G transceivers negotiated only 1G, and previously stable 10G links dropped intermittently…

25g connectx-4 mellanox MikroTik SFP28

coaxpilot98 GB asked 14 days ago

7votes

1 answer

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Fortinet 25G DAC links between identical FortiSwitch units but not FS2048 to FS648

We are collapsing two aggregation rows onto FortiSwitch, and the last piece is a 25G interconnect between an FS2048 and an FS648 in adjacent racks. Everything else in the design came up on the first attempt; this one link refuses to. FortiSwitch 2048, 25G front-panel port FortiSwitch 648, 25G…

25g DAC fec fortiswitch SFP28

waverunner63 KR asked 21 days ago