- Community Home
- >
- Networking
- >
- Switching and Routing
- >
- LAN Routing
- >
- Re: Two Stacked HP 2920-24G Switch (J9726A)
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-09-2019 07:05 AM - edited тАО12-09-2019 07:07 AM
тАО12-09-2019 07:05 AM - edited тАО12-09-2019 07:07 AM
Two Stacked HP 2920-24G Switch (J9726A)
Hi!
I have two HP 2920-24G Switch (J9726A) switches Stacked (Topology Ring). (STP is Disabled)
Parrent up links is LACP group TRK1 1/16;2/16 to Juniper Router. Work well.
I want to connect two new Mikrotik optical swiches CRS309-1G-8S (SWOS) (1=Ethernet port and optical ports) connected them to Mikrotik side one ETH port and HP 2920-24G side 1/20 and 2/20
Between CRS309 I made two to two optical LACP active connections.
On the HP 2920-24G I made ports 1/20 and 2/20 Trunk type = LACP, Trunk Group = Trk3
I'm afraid to enable this configuration. I'm afraid of the loop..
Can you help?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-10-2019 04:17 AM
тАО12-10-2019 04:17 AM
Re: Two Stacked HP 2920-24G Switch (J9726A)
You're right to be afraid -> desired scenario will create a loop involving the HP 2920 Stack and the two added (inter-linked together [*]) Mikrotik CRS309-1G-8S switches.
I suggest you - in any case - to FIRST enable (R)STP on HP 2920 Stack and assign highest priority (0) to it.
[*] Here with inter-linked I mean simply (up)linked together...not being stacked (or stackable) as HP 2920 switches do (stack = virtual switch).
I'm not an HPE Employee
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-10-2019 07:14 AM - edited тАО12-10-2019 07:39 AM
тАО12-10-2019 07:14 AM - edited тАО12-10-2019 07:39 AM
Re: Two Stacked HP 2920-24G Switch (J9726A)
Ok, I wanted enable STP but i see only Enable checkbox. Where is possible write it down priority I don't see?
In Configuration Report I see:
spanning-tree Trk3 priority 4
4=16384
I currently see this strange situation. SWOS1 and SWOS2 from the begining pinged well. But after some time SWOS1 are disappeared. Ok, I try to disable on HP switch port to worked SWOS2. But HP sw turned it on automaticly ?!
Ok, I go and physicaly emptu cable for SWOS2. Started working SWOS1. I renewed the connection. to SWOS2. And SWOS1 stoped working. Why is it? It may be normal for the LACP protocol, if I connect in HP switch one LACP group two different switch without any LACP and one ethernet cable in each.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-10-2019 02:58 PM
тАО12-10-2019 02:58 PM
Re: Two Stacked HP 2920-24G Switch (J9726A)
Mate, stop any link aggregation (LACP or Static, doesn't matter) between HP 2920 Stack (1/20+2/20) and the two Mikrotik Switches...Link Aggregation requires member links are co-terminus...so they can leave and depart all and only from a single standalone switch (or a Virtual Switch as the HP 2920 Stack actually is) to a single standalone switch (or a Virtual Switch as the HP 2920 Stack actually is)...since Mikrotiks aren't doing Virtual Switching (they are simple inter-linked together)...the link aggregation will (partially) fail once 1/20 is connected to Mikrotik 1 and 2/20 is connected to Mikrotik 2 (and the fact both Mirkotiks are just inter-linked together adds a loop too).
You need to carefully think about what you're doing (Network Topology) with what you have...
On the HP 2920 Stack via CLI setting the spannig tree is a matter of seconds...are you working with CLI?
I'm not an HPE Employee
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-11-2019 12:46 AM
тАО12-11-2019 12:46 AM
Re: Two Stacked HP 2920-24G Switch (J9726A)
Unfortunately this 2920-24G model CLI isn't full functionality CLI.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-11-2019 04:37 AM
тАО12-11-2019 04:37 AM
Re: Two Stacked HP 2920-24G Switch (J9726A)
I'm not an HPE Employee
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-13-2019 06:50 AM
тАО12-13-2019 06:50 AM
Re: Two Stacked HP 2920-24G Switch (J9726A)
Ok, I check it, but I seeam the CLI allow configured only same things.. Currently I refused to use both connections to HP sw. SWOS4 are connected between SWOS03. Bad! If SWOS03 die, both will disappear.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-13-2019 08:01 AM
тАО12-13-2019 08:01 AM
Re: Two Stacked HP 2920-24G Switch (J9726A)
With CLI you have 100% control over all configuration features.
What is your actual network topology? who is connected to who?
I'm not an HPE Employee
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-17-2019 06:06 AM
тАО12-17-2019 06:06 AM
Re: Two Stacked HP 2920-24G Switch (J9726A)
You are right! Yes CLi work well, telnet and ssh too. I used Layer2.
Firt (router Juniper two ports LACP active-active) to second HP 2920 Stacked to third new two Mikrotic Optic SW (1 ethernet and 8 Optical ports). This network is for iSCSI traffic.