6
votes
Accepted
Why doesn't Ethernet protocol support switch fabric topology?
"Switched fabric" (SW) is mainly used for Fibre Channel networks as its contrasts the other FC topologies point-to-point (P2P) and arbitrated loop (AL). The point in SW being that there are multiple, ...
- 82.7k
4
votes
Accepted
SFP modules and LC-to-LC patch panels?
OM4 is good for 400 m with 10GBASE-SR or for 550 m with 1000BASE-SX, according to the IEEE standards. (These can often be "extended" but there's no guarantee.)
The link power budget isn't usually a ...
- 82.7k
3
votes
Accepted
SFP compatibility on QLogic FC HBA and Cisco FC SFPs
If it accepts the HP branded ones, it will likely accept the Cisco tagged one as well. If the HP one is multi-rate (and almost always are), it should work at whatever speed both sides can support. (i....
- 31.8k
3
votes
Connect two Ethernet network devices with fibre cable
Yes, you can do this with equal-speed fiber transceivers which support the same transmission type. For example, if each PC has a 1000baseLX SFP, you can simply connect a single-mode patch cord ...
- 5,449
2
votes
Accepted
iSCSI silent data corruption
TCP checksums are only detecting errors - there's no correction, just retransmission.
iSCSI is a protocol without a defined physical interface - so asking for its expected (undetected) error rate is ...
- 82.7k
2
votes
Accepted
Connect two Ethernet network devices with fibre cable
Having an ethernet crossover cable it is possible to make a lan, connecting both devices directly with no need of a router or switch.
For twisted-pair Ethernet, most devices support Auto MDI-X today, ...
- 82.7k
2
votes
SFP modules and LC-to-LC patch panels?
This will depend on the quality of your fiber, patch panels, patch cords, and specific SFP optics. Several examples from my collection of aging ethernet capable FC optics (1/2/4G):
Ethernet1/15
...
- 31.8k
2
votes
Which addresses are used in fcp header?
Source/Destination addresses here are 24 bit FC Port addresses which consist of 3 bytes: Domain ID, Area ID and Node ID. Details you can find, for example, here: https://www.storagefreak.net/2014/10/...
- 141
2
votes
FibreChannel topology
N-port is a node port, actually it's HBA on a server or a port on a storage array. It is used to connect a node to a Fibre Channel switch. On Brocade switch you would usually have F-port, which is "...
- 141
2
votes
AOC cables for Brocade Fiberchannel
You will need to check your switch's manual or compatibility list. Not all switches (and firmware versions) are compatible with AOC cables.
Additionally, 10 Gb cables are not guaranteed to work with ...
- 82.7k
1
vote
Accepted
AOC cables for Brocade Fiberchannel
After talking with my Brocade vendor, "there are no such thing as 16 GB FC AOC cable". Is have been a misunderstanding between Brocade FiberChannel and Brocade ethernet
I mean, the communication in ...
- 1,152
1
vote
FibreChannel topology
Point-2-point mode is the opposite of arbitrated-loop mode (AL). You usually do not want AL if there's a switch. Set all ports to P2P at all times unless you really do need AL mode (when you chain ...
- 82.7k
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