Setting up Qos on an HP Switch

Hello:

We are using HP ProCurve 2910al-48G ethernet switches.  At my work we network 2 separate locations that are connected via a 10 mbps fiber point-to-point connection.  Lets call the primary office = Office#1 and the secondary office = office#2.

I probably should mention that we are a small company with 32 employee and Office#2 will have 5 employees at the most at any given time. Hence, the majority of the fiber point to point traffic, during business hours, is used for telephony.  For the past year we have been replicating backups from Office#1 to Office#2 using the fiber point-to-point connection during the evening hours.  I have scheduled the replication to transfer the data at full blast (10 mbps) at 11:00 pm - 7:00 am.  the other times (8:00 pm - 11:00 pm it is set to replicate at a lower rate 7.0 mbps).  The problem that we are dealing with is that once every month the Phone system at Office#2 is non-functional and it must be restarted.  I can do that remotely, I can connect to the appliance from Office #1 and remotely restart the appliance.  The everything is fine again; but, I should not have to remotely restart that appliance once every 2-3 months.

The telephony vendor stated that we should enable QoS on the ethernet switches.  We already have that on the Office#1 switch; but, not on the Office#2 switch.  Please see some configurations below.

Office#1 switch
vlan 101
   name "Office1_Voice"
   untagged 2-4
   qos priority 5
   ip address XX.XX.X.254 255.255.255.0
   exit


Office#2 switch
vlan 102
   name "Office2_Voice"
   untagged 3
   ip address XX.XX.X.254 255.255.255.0
   exit

To properly utilize QoS will QoS need to be configured on both the switches at both locations?  I am just wondering what I can do to help prevent the telephony system from going down and then needing a restart every once in a while.  This never happened before we began replicating our backups to Office#2.

It it is required to setup QoS on the Office#2 switch tehn how may I do that?  I did not setup QoS on the Office#1 switch.
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PkafkasNetwork EngineerAsked:
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PkafkasNetwork EngineerAuthor Commented:
I know that the fiber point to point is designed to be used 24/7/365.  Perhaps we are pushing it too much in the evening; but, why would that only affect the Voicemail?
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PkafkasNetwork EngineerAuthor Commented:
I did a little research regading the syntax in created a qos vlan rule.

>vlan < vid > qos priority < 0 - 7 >
>show qos vlan-priority
>write memory

To properly utilize QoS will QoS need to be configured on both the switches at both locations?  I am just wondering what I can do to help prevent the telephony system from going down and then needing a restart every once in a while.  This never happened before we began replicating our backups to Office#2.

This other experts question verifies the syntax above:  http://www.experts-exchange.com/Hardware/Networking_Hardware/Switches/Q_27284643.html

But what else can I do for maintenance on the switch regarding the VLan 101 packet loss?
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PkafkasNetwork EngineerAuthor Commented:
After reading some more about QoS.  Quality of service is about prioritizing outbound packets.

1.  Office#1 prioritize VLan-101 at '5' for outbound packets.
       a.  There are currenlty 2 other Vlan's on that switch.
       b.  Perhaps I should change that priority to 3 instead of 5?

MKE-DIST-48G-1-254(config)# show qos vlan-priority

  VLAN priorities

  VLAN ID Apply rule  | DSCP   Priority
  ------- ----------- + ------ -----------
  1         No-override |        No-override
  100     No-override |        No-override
  101     Priority         |        5

2.  The Office #2 VLan, at least I do not think, does not have a lot of traffic to justify any priority settings, where it would transfer back to through the fiber connection.  Perhaps we do not need to put a QoS setting on that switch?  We never had a QoS setting on that switch before.



Lets keep track of the issue at hand, the issue is that the Voicemail Appliance must be restarted after 1-3 months.  I can still remotely connect to the appliance and remotely restart that appliance;hence, there is not connectivity problem.  Perhaps the issue is with that appliance and not the network connectivity?
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PkafkasNetwork EngineerAuthor Commented:
I ended up adding the rule, it was easy and I do not think it will hurt anything.  At least we can eliminate it from the equation as a possible fix if the problem happens again.

Perhaps that since no other VLan has any priority assigned to it, then that may mean that the Voice Vlan has the top priory.  

show qos vlan-priority
  VLAN priorities
  VLAN ID Apply rule  | DSCP   Priority
  ------- ----------- + ------ -----------
  1          No-override |              No-override
  50        No-override |              No-override
  100     No-override  |              No-override
  102      Priority          |              5
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PkafkasNetwork EngineerAuthor Commented:
Now office#2

vlan 102
   name "office2"
   untagged 3
   qos priority 5
   ip address XX.XX.XX.254 255.255.255.0
   exit
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TimotiStDatacenter TechnicianCommented:
For QOS, just giving a voice vlan a higher priority like you did should be okay; on more recent Procurve platform you should be able to put the 'voice' statement under the vlan config as well.

Voice vendors are quick to blame every issue on QoS, but having to reboot a device is not a quality issue, it's a stability issue... I'd start with the usual "check latest firmware..." way of doing things. But no harm in setting up the QoS, both for voice quality and to avoid finger pointing.
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PkafkasNetwork EngineerAuthor Commented:
So have a QoS priority of '5' is the same as having is set as a priority of '1' if there is no other priority assigned to that switch?
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TimotiStDatacenter TechnicianCommented:
If there's only one priority in use, then all traffic is treated the same way, as they have the same priority.
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PkafkasNetwork EngineerAuthor Commented:
OK, so in my situation there is only 1 priority in use (see below):

show qos vlan-priority
  VLAN priorities
  VLAN ID Apply rule  | DSCP   Priority
  ------- ----------- + ------ -----------
  1          No-override |              No-override
  50        No-override |              No-override
  100     No-override  |              No-override
  102      Priority          |              5

Does this mean that VLan-102 is treated with the Top Priority for outbound traffic and then the remainder of the VLan's  are equally treated as secondary?  I just want to make sure my understand is correct and I do not want to assume.
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TimotiStDatacenter TechnicianCommented:
Yes, traffic in VLAN 102 will be given priority over traffic in VLANs 1,50,100.
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