Trunk between HPE FlexFabric 5930 and Aruba 2930 48G

[jotfco]

Hi,

I've some issue about communication between  HPE (H3c) comware 5930 and aruba 2930 switch.

On the 5930 (core switch) I have 2 routers connected, one for the Data on Vlan 1 and the second on VLAN 20 for the voice.

I configured the port as follows:

interface Ten-GigabitEthernet1/2/23
port link-mode bridge
description FIREWALL-GATEWAY
port access vlan 1
stp edged-port enable
#

interface Ten-GigabitEthernet1/2/24
port link-mode bridge
description VOICE
port access vlan 20
stp edged-port enable

I need also to transport those VLAN to 10 Aruba 2930 access switches connected via optical fiber in trunk mode.

I configured the interfaces on the 5930 as follows:

interface GigabitEthernet1/1/1
port link-mode bridge
port link-type trunk
port trunk permit vlan all

And on the Aruba I configured the interface 48 in this way:

vlan 1
name "Data"
untagged 1/1-1/46
tagged 1/47-1/48
ip address 192.168.66.2 255.255.0.0
exit

vlan 20
name "VoIP"
tagged 1/1-1/48
ip address dhcp-bootp
exit

It seems that the VLANs are not propagated to the remote Aruba switches, in fact if I connect a Pc to a copper interface it doesn't get the IP from the DHCP server that is connected on the core switch (HPE 5930). Same situation If I connect an IP phone that requires a tagged port on the vlan 20...

CORE_SWITCH 5930-------------------trunk-----------------------Aruba 2930 Access switch

         I                         I                                                                                 I                 I

data router           voice                                                                           PC          ip-phone

vlan 1                       vlan 20                      permit all                               vlan 1        vlan 20

Thanks

[mmilev]

Hi,

I understand that any end devices on the Aruba 2930 do not get an IP address over DHCP.

Does Aruba 2930 get an IP in VLAN 20? If not, can you please add a static IP in VLAN 20 and check the IP connectivity between 2930 and the core 5930 in VLAN 20.

Please verify if Aruba 2930 ping 5930 in VLAN 1?

Please verify if there is any default route on 2930 pointing 5930 VLAN 1 IP as a next hop.

If 2930 and 5930 can reach each other in both VLANs then please verify if 2930 can reach the DHCP server from both VLANs.

Also as a test you can give a static IP on a PC (in VLAN 1)  and you can verify if it can reach its gateway, the DHCP server etc.

If the connectivity using static IPs is fine then continue troubleshooting the DHCP.

If the DHCP server is on a different subnet than the DCHP clients then a DHCP relay is needed on the VLAN interfaces on the core 5930.

5930 config guides you can find below:

R2702-HPE FlexFabric 5940 & 5930 Switch Series Configuration Guides Portfolio

Best regards

[parnassus]

Hi! can you provide the outputs of these two commands:

• display interface GigabitEthernet1/1/1 (on HPE 5930)
• show vlan port 1/48 detail (on Aruba 2930)

[Nalla_VS]

Hi,

Configuration looks okay and have you configured ip helper-address properly on the Core Switch.

Please check the dhcp scope and helper-address in core switch and Try.