Wired Intelligent Edge (Campus Switching and Routing)

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Contributor II

Aruba 2530-48G Trunk

Hi,

 

I have 3 pcs of Aruba 2530-48G for different floors.

I want to connect all of them using 2 pcs of utp cable.

 

QUESTIONS:

1. Can I do full loop as attached jpg
2. If I do full loop, can I enable loop protection
3. what are best practice for STP and Jumbo frame
should I disable STP and enable Jumbo frame
if I need to enable Jumbo frame.
Should I enable it only for ports connected to storage and not all ports

tq


Accepted Solutions
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MVP Guru

Re: Aruba 2530-48G Trunk

Jumbo Frames and Spanning Tree aren't features directly interconnected so they can coexist at the same time.

 

I would define on each switch a pair of Port Trunks by using, for each Port Trunk, a pair of physical interfaces (and then use LACP as control protocol).

 

I would also use RSTP (setting priorities accordingly), so one of the three switches will be the root of the STP topology (highest priority = 0), others will follow in terms of STP Priority.

 

So OK with your topology. Each trk<trunk-id> should be set via:

 

trunk x,y trk1 lacp

trunk m,n trk2 lacp

 

provided that id 1 and id 2 are freely available for new Port Trunks configuration.

 

Switch 1:

  • Port Trunk trk1 (interface x,y) <- from Switch 3 Trk 2 (m on x, n on y) <-- connect those links as the latest ones so Spanning Tree will block them by blocking their logical interface.
  • Port Trunk trk2 (interface m,n) -> to Switch 2 Trk 1 (m on x, n on y)

Switch 2:

  • Port Trunk trk1 (interface x,y) <- to Switch 1 Trk 2 (x on m, y on n)
  • Port Trunk trk2 (interface m,n) -> to Switch 3 Trk 1 (m on x, n on y)

Switch 3:

  • Port Trunk trk1 (interface x,y) <- to Switch 2 Trk 2 (x on m, y on n)
  • Port Trunk trk2 (interface m,n) -> to Switch 1 Trk 1 (m on x, n on y)

Enable Jumbo Frame at VLAN level, I don't recall if it is necessary to enable Jumbo Frame (9000 Bytes) support at interface level or if that is already enabled by default.

 

View solution in original post


All Replies
Highlighted
MVP Guru

Re: Aruba 2530-48G Trunk

Jumbo Frames and Spanning Tree aren't features directly interconnected so they can coexist at the same time.

 

I would define on each switch a pair of Port Trunks by using, for each Port Trunk, a pair of physical interfaces (and then use LACP as control protocol).

 

I would also use RSTP (setting priorities accordingly), so one of the three switches will be the root of the STP topology (highest priority = 0), others will follow in terms of STP Priority.

 

So OK with your topology. Each trk<trunk-id> should be set via:

 

trunk x,y trk1 lacp

trunk m,n trk2 lacp

 

provided that id 1 and id 2 are freely available for new Port Trunks configuration.

 

Switch 1:

  • Port Trunk trk1 (interface x,y) <- from Switch 3 Trk 2 (m on x, n on y) <-- connect those links as the latest ones so Spanning Tree will block them by blocking their logical interface.
  • Port Trunk trk2 (interface m,n) -> to Switch 2 Trk 1 (m on x, n on y)

Switch 2:

  • Port Trunk trk1 (interface x,y) <- to Switch 1 Trk 2 (x on m, y on n)
  • Port Trunk trk2 (interface m,n) -> to Switch 3 Trk 1 (m on x, n on y)

Switch 3:

  • Port Trunk trk1 (interface x,y) <- to Switch 2 Trk 2 (x on m, y on n)
  • Port Trunk trk2 (interface m,n) -> to Switch 1 Trk 1 (m on x, n on y)

Enable Jumbo Frame at VLAN level, I don't recall if it is necessary to enable Jumbo Frame (9000 Bytes) support at interface level or if that is already enabled by default.

 

View solution in original post

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