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Issues with HPE 2530-48G and trunks.

erBabi1
Occasional Contributor

Issues with HPE 2530-48G and trunks.

Hi to all,

I have four units of the HPE 2530-48G switch. These switches are connected in a ring between them for redundancy purposes. These are configured as a switch stack (one commander and three memebers in the stack)

In the units 2 and 4, I have got configured four trunks in each switch with two ports each. In the trunk ports, I have got connected access points which let us to access to the WIFI network.

When I try yo ping to IP address of this WIFI network, I loose a lot of packets and the users can't to work cause the applications can't not establish the comunication (they can't map units pe)....

I have configured the trunks with this configuration:

trunk 39-40 trk1 trunk
trunk 41-42 trk2 trunk
trunk 43-44 trk3 trunk
trunk 45-46 trk4 trunk
vlan XX
name "XXX"
untagged Trk1-Trk4
tagged 47-48
no ip address
exit
vlan XX
name "XXX"
tagged 47-48,Trk1-Trk4
no ip address
exit
vlan XX
name "XXX"
tagged 47-48,Trk1-Trk4
no ip address
exit
vlan XX
name "XXX"
tagged 47-48,Trk1-Trk4
no ip address
exit
spanning-tree
spanning-tree Trk1 admin-edge-port
spanning-tree Trk1 priority 4
spanning-tree Trk2 admin-edge-port
spanning-tree Trk2 priority 4
spanning-tree Trk3 admin-edge-port
spanning-tree Trk3 priority 4
spanning-tree Trk4 admin-edge-port
spanning-tree Trk4 priority 4
spanning-tree instance ist Trk1 path-cost 20000
spanning-tree instance ist Trk2 path-cost 20000
spanning-tree instance ist Trk3 path-cost 20000
spanning-tree instance ist Trk4 path-cost 20000
spanning-tree priority 4
trunk-load-balance L2-based


Is correct this configuration?? Is there any mistake which can be breaking the communication?? The trunks aren't LACP trunks.

Thanks in advance.

Kind Regards.
David.

7 REPLIES
Vince-Whirlwind
Honored Contributor

Re: Issues with HPE 2530-48G and trunks.

What is the Trunk config on the attached access points?

erBabi1
Occasional Contributor

Re: Issues with HPE 2530-48G and trunks.

HI Vince,

I don't know.... The APs are managed by one external provider and I can't access to the configuration. But when we installed the APs, we made some tests and this way was the only way which the APs are kept running properly...

You can say me if the spanning-tree configuration is correct???

Thanks for all.

Regards.

David.

Vince-Whirlwind
Honored Contributor

Re: Issues with HPE 2530-48G and trunks.

I don't really see the point of any of that spanning-tree config.

It is hard to know what to suggest without knowing what make/model the APs are, and what their config is.

You could infer something by checking, what is the status of both switchports in each trunk? Are they both up? Are they both passing traffic? What is your STP status? What does your log contain?

16again
Respected Contributor

Re: Issues with HPE 2530-48G and trunks.

Since the setup already doesn't work....what happens after disconnecting ports 40 , 42, 44 and 46 ?  Problem related to trunk might not show up when using only single connection.

Also, beware when roaming:  Some HP switches use  a MAC time-out to prevent flapping of MAC addresses.

erBabi1
Occasional Contributor

Re: Issues with HPE 2530-48G and trunks.

Hi Vince,

the AP models are Xirrus XR620 or XR2436, the ports configuration is the same for all the devices. The AP has two gigaethernet ports, the two ports are in a no LACP teaming. They have got fixed IP for each AP.

In the switches the trunks ports have the following states:

All the trunks ports are in up state and are configured in auto negotiation (speed and duplex).
All the trunks ports are in forwarding state (STP).
In the logs, there isn't any event which make reference to these ports. There are ports blocked but none is a trunk port.

Regards.

 

erBabi1
Occasional Contributor

Re: Issues with HPE 2530-48G and trunks.

HI 

We had a lot of problems when we setup the network....... There are some AP, which only I can see one MAC address (each AP has two MACs).

How can I check if the MAC time-out is actived?? Or if that is the problem??

Thanks

Regards. 

 

Vince-Whirlwind
Honored Contributor

Re: Issues with HPE 2530-48G and trunks.

I had a read of this:
http://docplayer.net/5773244-Application-note-gigabit-ethernet-port-modes.html

Which contains this:

 

Interaction with Other Features
The WiFi Array Gigabit port modes interact with VLANs in the following ways:
1.
802.3ad mode does not
currently
support VLANs
.
2.
Load Balancing
mode
does not
currently
support VLANs
.
3.
Broadcast
mode
supports VLANs
.
4.
Link Backup
mode
supports VLANs