Question

Switched UNI Interface + LACP + SLPP + Untagged Frames Discard + Default VLAN 0

  • 9 March 2021
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Hi,

Looking through the Extreme Automated Campus EVD: 

https://www.extremenetworks.com/resources/extreme-validated-design/extreme-automated-campus/

It uses switched UNI’s for connections to servers using the example configuration below:

mlt 1 enable
mlt 1 member 1/13
mlt 1 encapsulation dot1q
mlt 2 enable
mlt 2 member 1/20
mlt 2 encapsulation dot1q

interface mlt 1
smlt
flex-uni enable
exit
interface mlt 2
smlt
flex-uni enable

interface GigabitEthernet 1/13
flex-uni enable
no shutdown
no spanning-tree mstp
yes
exit
interface GigabitEthernet 1/20
flex-uni enable
no shutdown
no spanning-tree mstp
yes
exit

i-sid 1090901 elan
c-vid 901 mlt 1
exit
i-sid 1090902 elan
c-vid 902 mlt 1
c-vid 902 mlt 2
exit

This is using a static MLT but I was considering using LACP, so my configuration looks a little like the below:

mlt 306 enable
mlt 306 encap dot1
mlt 306 name "Dell M1000e Chassis-B36-Rack5-A1"

interface mlt 306
lacp key 306
lacp enable
flex-uni enable
smlt
exit

interface gigabitEthernet 3/6
flex-uni enable
encap dot1
untagged-frames-discard
default-vlan-id 0
name "Dell M1000e Chassis-B36-Rack5-SwA1"
slpp packet-rx
slpp packet-rx-threshold 50
lacp key 306
lacp aggregation enable
lacp mode active
lacp enable
no spanning-tree mstp
exit

interface gigabitEthernet 4/6
flex-uni enable
encap dot1
untagged-frames-discard
default-vlan-id 0
name "Dell M1000e Chassis-B36-Rack5-SwA1"
slpp packet-rx
slpp packet-rx-threshold 50
lacp key 306
lacp aggregation enable
lacp mode active
lacp enable
no spanning-tree mstp
exit

i-sid 12110499 elan
c-vid 499 mlt 306
exit

i-sid 12110703 elan
c-vid 703 mlt 306
exit

As you can see my configuration has quite a few additions, some like the untagged frames discard, default vlan 0, SLPP used trying to adopt best practise - whether that required or not in this instance is up for question. This is the list of commands added to that provided in the EVD:

  • LACP
  • untagged-frames-discard
  • default-vlan-id 0
  • slpp
  • encap dot1q

What I’m not sure is if there are any caveats to using LACP, or any of those others commands when used generally or in conjunction with a switched UNI rather then say a VLAN UNI?

Many thanks in advance

 

 


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