What happens when more links are associated with an FEX than are permitted in the max-links parameter? Let’s find out…
Posts Tagged ‘static pinning’
Experimenting with Static Pinning
Thursday, February 4th, 2010Methods for connecting FEXs
Friday, January 29th, 2010If you’re wondering what an FEX is, check out this article: http://www.cciezone.com/?p=231.
FEXs are connected to the parent switch(es) via fabric interfaces. These are 10Gbps interfaces which connect the two switches (think of a stacking cable on a 3750-series switch).
There are two methods of configuring fabric interfaces:
- Static pinning
- EtherChannels
Although these are somewhat differentiated in some of the documentation, the static pinning looks almost the same as that used for EtherChannels. The main difference is that static pinning uses physical interfaces, whereas EtherChannel uses a single Port-Channel interface for the fabric interface (there are some minor configuration differences and requirements as shown below).
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