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FEX Questions

visitor68
Enthusiast
Enthusiast

Need two things, please:

1.) a Link to a design guide that shows all the combinations of how I can connect a FEX to a 5K/7K

2.) The highest number of 2232 10G FEXs I can connect to a pair of 5/N7ks.

        Thank you

14 Replies 14

Reza Sharifi
Hall of Fame Expert Hall of Fame Expert
Hall of Fame Expert

Hi,

2.) The highest number of 2232 10G FEXs I can connect to a pair of 5/N7ks.

If 5k is layer-2 only, the max number of FEX is 24

if 5h is layer-2 and layer-3 (has a layer-3 card installed) the max is 8

for 7k the max is 32

1.) a Link to a design guide that shows all the combinations of how I can connect a FEX to a 5K/7K

http://www.cisco.com/en/US/partner/docs/switches/datacenter/nexus2000/sw/configuration/guide/rel_4_0_1a/FEX-overview.html

HTH

Reza, I signed in with my CCO account, but I couldnt access the document.

Anyway, is it possible to dual-home a FEX to 2 separate 5500s or 7Ks? Thats why I wanted that document....

Hi,

Yes it is possible to dual-home fex to two Nexus5K or 7K by creating VPC on Nexus5 or 7K.

Below is the config to be done on each 5K box.

Example:

fex 112
  pinning max-links 1
  description
  type "Nexus 2148T"

interface port-channel112
  description
  switchport mode fex-fabric
  vpc 112
  fex associate 112

interface Ethernet1/12
  description
  switchport mode fex-fabric
  fex associate 112
  channel-group 112

Warm Regards,

Ameya Oke