Wired Intelligent Edge (Campus Switching and Routing)

Reply
Highlighted

AOS-CX 8325 Port Speed Settings (following "Group speed mismatch" error)

Overview

The (newish) 8325 switch has SFP28 ports that support 1, 10, 25Gb connections. These are organised into interface groups of 12 ports each, and the default speed setting is 25Gb. You may not find the command to change it by looking around the CLI, hence this post.

 

Group speed mismatch Error

The flashing orange port light or this error is likely to be first indication you have that the port is not configured to support 1 or 10Gb transceivers.

 

8325 group speed mismatch.jpg

 

 

8325# sh int brief
----------------------------------------------------------------------------------
Port      Native  Mode   Type        Enabled Status  Reason                 Speed
          VLAN                                                              (Mb/s)
----------------------------------------------------------------------------------
1/1/1     --      routed --          no      down    No XCVR installed      --
1/1/2     --      routed --          no      down    No XCVR installed      --
1/1/3     --      routed SFP+DA3     no      down    Group speed mismatch   --
1/1/4     --      routed --          no      down    No XCVR installed      --
1/1/5     --      routed --          no      down    No XCVR installed      --
1/1/6     --      routed --          no      down    No XCVR installed      --
1/1/7     --      routed --          no      down    No XCVR installed      --
1/1/8     --      routed --          no      down    No XCVR installed      --
1/1/9     --      routed --          no      down    No XCVR installed      --
1/1/10    --      routed --          no      down    No XCVR installed      --
1/1/11    --      routed --          no      down    No XCVR installed      --
1/1/12    --      routed --          no      down    No XCVR installed      --
1/1/13    --      routed 1000BT      no      down    Group speed mismatch   --
1/1/14    --      routed --          no      down    No XCVR installed      --
1/1/15    --      routed --          no      down    No XCVR installed      --
1/1/16    --      routed --          no      down    No XCVR installed      --

In this example, there is a 10Gb DAC in 1/1/3, and a 1Gb RJ45 transceiver in 1/1/13 that are mismatched.

 

Standard commands do not show anything, and there are no pointers in the running config.

 

8325# sh int 1/1/3

Interface 1/1/3 is down (Administratively down)
 Admin state is down
 State information: Group speed mismatch
 Description:
 Hardware: Ethernet, MAC Address: 54:80:28:fc:86:00
 MTU 1500
 Type SFP+DA3
 qos trust none
 Speed 0 Mb/s
 Auto-Negotiation is on
 Flow-control: off
 Error-control: off
 Rx
             0 input packets               0 bytes
             0 input error                 0 dropped
             0 CRC/FCS
 Tx
             0 output packets              0 bytes
             0 input error                 0 dropped
             0 collision

8325# sh run int 1/1/3
[nothing at all in a default config]

Interface Group

We need to look specifically at the interface-group.

 

8325# sh system interface-group
------------------------------------------------
Group  Speed  Member Ports      Mismatched Ports
------------------------------------------------
1      25g    1/1/1-1/1/12      1/1/3
2      25g    1/1/13-1/1/24     1/1/13
3      25g    1/1/25-1/1/36
4      25g    1/1/37-1/1/48

 

8325 Interface groups.png

 

 

We need to change the config to 10g (which also supports 1Gb).

 

8325(config)# system interface-group 1 speed 10g
Changing the group speed will disable all member interfaces that
do not match the new speed.

Continue (y/n)? y
8325(config)# system interface-group 2 speed 10g
Changing the group speed will disable all member interfaces that
do not match the new speed.

Continue (y/n)? y
8325(config)# system interface-group 3 speed 10g
Changing the group speed will disable all member interfaces that
do not match the new speed.

Continue (y/n)? y
8325(config)# system interface-group 4 speed 10g
Changing the group speed will disable all member interfaces that
do not match the new speed.

Continue (y/n)? y

Working!

It now works OK.

 

8325(config)# sh int brief
----------------------------------------------------------------------------------
Port      Native  Mode   Type        Enabled Status  Reason                 Speed
          VLAN                                                              (Mb/s)
----------------------------------------------------------------------------------
1/1/1     --      routed --          no      down    No XCVR installed      --
1/1/2     --      routed --          no      down    No XCVR installed      --
1/1/3     --      routed SFP+DA3     no      down    Administratively down  --
1/1/4     --      routed --          no      down    No XCVR installed      --
1/1/5     --      routed --          no      down    No XCVR installed      --
1/1/6     --      routed --          no      down    No XCVR installed      --
1/1/7     --      routed --          no      down    No XCVR installed      --
1/1/8     --      routed --          no      down    No XCVR installed      --
1/1/9     --      routed --          no      down    No XCVR installed      --
1/1/10    --      routed --          no      down    No XCVR installed      --
1/1/11    --      routed --          no      down    No XCVR installed      --
1/1/12    --      routed --          no      down    No XCVR installed      --
1/1/13    --      routed 1000BT      no      down    Administratively down  --
1/1/14    --      routed --          no      down    No XCVR installed      --
1/1/15    --      routed --          no      down    No XCVR installed      --
1/1/16    --      routed --          no      down    No XCVR installed      --

 

And you can also see the commands in the config.

 

8325# sh run
Current configuration:
!
!Version ArubaOS-CX GL.10.03.0030
!
!
!
ssh server vrf mgmt
!
!
!
!
!
vlan 1
spanning-tree config-name 54:80:28:fc:86:00
interface mgmt
    no shutdown
    ip dhcp
! interface group 1 contains ports 1/1/1-1/1/12
system interface-group 1 speed 10g
! interface group 2 contains ports 1/1/13-1/1/24
system interface-group 2 speed 10g
! interface group 3 contains ports 1/1/25-1/1/36
system interface-group 3 speed 10g
! interface group 4 contains ports 1/1/37-1/1/48
system interface-group 4 speed 10g
interface 1/1/3
interface 1/1/55
   no shutdown

1Gb Optical Transceivers

There is an additional setting for 1Gb optical transceivers to force them to 1000-full. In fact this is the only parameter for "speed".

speed 1000-full

 



Richard Litchfield, HPE Aruba
Regional Product Manager, APJ – Aruba Branded Switching
Highlighted
MVP Guru

Re: AOS-CX 8325 Port Speed Settings (following "Group speed mismatch" error)

Greetings! great article!

 

Worth to add just a little note (IIRC): SFP Transceivers (Optical/Copper) are supported on Aruba 8325 starting from the ArubaOS-CX 10.03 CPE release (10.03.0001).

Highlighted
MVP Guru Elite

Re: AOS-CX 8325 Port Speed Settings (following "Group speed mismatch" error)

Thans Richard !!!



PowerArubaSW: Powershell Module to use Aruba Switch API for Vlan, VlanPorts, LACP, LLDP... More info

PowerArubaCP: Powershell Module to use ClearPass API (create NAD, Guest...) More info

PowerArubaCX: Powershell Module to use ArubaCX API (get interface/vlan/ports info)

PowerArubaIAP: Powershell Module to use Aruba Instant AP

PowerArubaMC: Powershell Module to use Mobility Controller / Master


ACMP 6.4 / ACMX #107 / ACCP 6.5 / ACSP
Highlighted
Occasional Contributor II

Re: AOS-CX 8325 Port Speed Settings (following "Group speed mismatch" error)

 

Thanks for this post.

 

I lose 12 Ports just for the keepalive link (which is a 1G SFP LR Transceiver).

 

Not nice.

- - - - -
ACSA, ACSP, ACMA, ACMP
Highlighted
MVP Guru

Re: AOS-CX 8325 Port Speed Settings (following "Group speed mismatch" error)

Hello, 

Regarding the dedicated port for keepalive. This is a recommendation for simplification and robustness, not a must. If you prefer to have keepalive transiting over upstream L3 network, this is possible under some restrictions: uplinks should not be VSX LAGS.

Please read the VSX Best Practice Appendix D

https://support.hpe.com/hpsc/doc/public/display?docId=a00094242en_us

 

This is explained in details.

Search Airheads
cancel
Showing results for 
Search instead for 
Did you mean: