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Meter remark DSCP value not reflected in queue selection

 
Highlighted
Frequent Advisor

Meter remark DSCP value not reflected in queue selection

Hi,

I am using 2930F switch/16.03 firmware and I have a simple topology of two hosts and one controller.

I have 2-queue configuration with the default mapping:

 

 sh qos queue-config 

Egress Queue Configuration 

Number of Queues : 2 

802.1p 
Queue Priorities 
----- ---------- 
1 0-3 
2 4-7  

 

 

 

sh qos dscp-map                   
                                                                                
 DSCP Policies                                                                  
                                                                                
  DSCP CodePoint DSCP Value 802.1p tag  DSCP Policy name                        
  -------------- ---------- ----------- --------------------------------        
  000000         0          0           cs0                                     
  000001         1          0                                                   
  000010         2          0                                                   
  000011         3          0                                                   
  000100         4          0                                                   
  000101         5          0                                                   
  000110         6          0                                                   
  000111         7          0                                                   
  001000         8          1           cs1                                     
  001001         9          1                                                   
  001010         10         1           af11                                    
  001011         11         1                                                   
  001100         12         1           af12                                    
  001101         13         1                                                   
  001110         14         1           af13                                    
  001111         15         1                                                   
  010000         16         2           cs2                                     
  010001         17         2                                                   
  010010         18         2           af21                                    
  010011         19         2                                                   
  010100         20         2           af22                                    
  010101         21         2                                                   
  010110         22         2           af23                                    
  010111         23         2                                                   
  011000         24         3           cs3                                     
  011001         25         3                                                   
  011010         26         3           af31                                    
  011011         27         3                                                   
  011100         28         3           af32                                    
  011101         29         3                                                   
  011110         30         3           af33                                    
  011111         31         3                                                   
  100000         32         4           cs4                                     
  100001         33         4                                                   
  100010         34         4           af41                                    
  100011         35         4                                                   
  100100         36         4           af42                                    
  100101         37         4                                                   
  100110         38         4           af43                                    
  100111         39         4                                                   
  101000         40         5           cs5                                     
  101001         41         5                                                   
  101010         42         5                                                   
  101011         43         5                                                   
  101100         44         5                                                   
  101101         45         5                                                   
  101110         46         7           ef                                      
  101111         47         5                                                   
  110000         48         6           cs6                                     
  110001         49         6                                                   
  110010         50         6                                                   
  110011         51         6                                                   
  110100         52         6                                                   
  110101         53         6                                                   
  110110         54         6                                                   
  110111         55         6                                                   
  111000         56         7           cs7                                     
  111001         57         7                                                   
  111010         58         7                                                   
  111011         59         7                                                   
  111100         60         7                                                   
  111101         61         7                                                   
  111110         62         7                                                   
  111111         63         7                                                   
                                  

 

 

Host 1 is sending UDP packets to host 2 at rate 10mbps.  I first try to test the DSCP-queue mapping without using meters. I monitor the queues using sh interface queue <num>.

I send the UDP packets with DSCP mark =40 (101000). The packets are correctly mapped to queue 2.

I send the UDP packets with DSCP mark =5 (000101). The packets are correctly mapped to queue 1.

Now, I send the UDP packets with DSCP mark =40 (101000) at 10mbps rate, however, I set a meter with DSCP remark of rate == 1mbps (so almost all packets will be remarked). and I install a flow entry that maps all UDP packets to this meter. The packets are correctly going into the meter, and at the receiver side the Wireshark capture shows that the DSCP was indeed remarked and set to =24 (011000) instead of 40 (101000), however, the packets are still mapped to queue 2!! 

it seems that the new DSCP mark is not taken into account and the original one is still used for the queue selection.

Have you tested the DSCP-queue-mapping when using meters ??

6 REPLIES 6
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Re: Meter remark DSCP value not reflected in queue selection

Hi Enas,

For completeness (and so that we can replicate your environment) would you mind posting the output of the following commands while this behavior is occurring?

show openflow instance X
show openflow instance X meters
show openflow instance X meters <your-meter-id>
show openflow instance X flows

Shaun

I am an HPE Employee
Highlighted
Frequent Advisor

Re: Meter remark DSCP value not reflected in queue selection

Hi Shaun,

Sure. Here you go:

Aruba-2930F-24G-PoEP-4SFP(of-inst-aggregate)# sh openflow inst agg              
                                                                                
 Configured OF Version         : 1.3 only                                       
 Negotiated OF Version         : 1.3                                            
 Instance Name                 : aggregate                                      
 Data-path Description         : aggregate                                      
 Administrator Status          : Enabled                                        
 Member List                   : VLAN 2                                         
 Pipeline Model                : Custom Pipeline                                
 Listen Port                   : None                                           
 Operational Status            : Up                                             
 Operational Status Reason     : NA                                             
 Datapath ID                   : 0002e0071bc4c7e0                               
 Mode                          : Active                                         
 Flow Location                 : Hardware Only                                  
 No. of Hardware Flows         : 3                                              
 No. of Software Flows         : 0                                              
 Hardware Rate Limit           : 0 kbps                                         
 Software Rate Limit           : 100 pps                                        
 Conn. Interrupt Mode          : Fail-Secure                                    
 Maximum Backoff Interval      : 60 seconds                                     
 Probe Interval                : 10 seconds                                     
 Hardware Table Miss Count     : NA                                             
 No. of Software Flow Tables   : NA                                             
 Egress Only Ports             : None                                           
 Table Model                   : Custom Pipeline                                
 Source MAC Group Table        : Disabled                                       
 Destination MAC Group Table   : Disabled                                       
 Default Miss Action           : Drop                                           
 Packet-In VLAN Tagging        : Default                                        
                                                                                
 Controller Id Connection Status Connection State Secure Role                   
 ------------- ----------------- ---------------- ------ ------                 
 1             Connected         Active           No     Master 
I have two tables. Table one just forwards packets to table 2 (Flow 2). Table two (in Flow 3) directs my UDP packets into meter 3. 

Aruba-2930F-24G-PoEP-4SFP(of-inst-aggregate)# sh openflow inst agg flows        
                                                                                
 OpenFlow Flow Table                                                            
                                                                                
 Flow 1                                                                         
 Match                                                                          
  Incoming Port : Any                   Ethernet Type    : IP                   
  Source MAC    : Any                   Destination MAC  : Any                  
  Source MAC Mask      : 000000-000000                                          
  Destination MAC Mask : 000000-000000                                          
  VLAN ID       : Any                   VLAN Priority    : Any                  
  Source IP Address      : Any                                                  
  Destination IP Address : Any                                                  
  IP Protocol   : UDP                                                           
  IP ECN        : Any                   IP DSCP          : Any                  
  Source Port   : Any                   Destination Port : 9999                 
  Source Port Range      : NA                                                   
  Destination Port Range : NA                                                   
  TCP Flags     : NA                                                            
  Custom Match One         : 0x31335444453839303631343336383730                 
  Custom Match One Mask    : 0xffffffffffffffffffffffffffffffff                 
  Custom Match Two         : Any                                                
  Custom Match Two Mask    : Any                                                
  Custom Match Three       : Any                                                
  Custom Match Three Mask  : Any                                                
  Custom Match Four        : Any                                                
  Custom Match Four Mask   : Any                                                
 Attributes                                                                     
  Priority      : 200                   Duration         : 74 seconds           
  Hard Timeout  : 0 seconds             Idle Timeout     : 0 seconds            
  Byte Count    : 0                     Packet Count     : 0                    
  Flow Table ID : 0                     Controller ID    : 1                    
  Cookie        : 0x0                                                           
  Hardware Index: NA                                                            
 Instructions                                                                   
    Drop                                                                        
                                                                                
 Flow 2                                                                         
 Match                                                                          
  Incoming Port : Any                   Ethernet Type    : Any                  
  Source MAC    : Any                   Destination MAC  : Any                  
  Source MAC Mask      : 000000-000000                                          
  Destination MAC Mask : 000000-000000                                          
  VLAN ID       : Any                   VLAN Priority    : Any                  
  Source IP Address      : Any                                                  
  Destination IP Address : Any                                                  
  IP Protocol   : Any                                                           
  IP ECN        : Any                   IP DSCP          : Any                  
  Source Port   : Any                   Destination Port : Any                  
  Source Port Range      : NA                                                   
  Destination Port Range : NA                                                   
  TCP Flags     : NA                                                            
  Custom Match One         : Any                                                
  Custom Match One Mask    : Any                                                
  Custom Match Two         : Any                                                
  Custom Match Two Mask    : Any                                                
  Custom Match Three       : Any                                                
  Custom Match Three Mask  : Any                                                
  Custom Match Four        : Any                                                
  Custom Match Four Mask   : Any                                                
 Attributes                                                                     
  Priority      : 0                     Duration         : 74 seconds           
  Hard Timeout  : 0 seconds             Idle Timeout     : 0 seconds            
  Byte Count    : 8983947               Packet Count     : 6101                 
  Flow Table ID : 0                     Controller ID    : 1                    
  Cookie        : 0x0                                                           
  Hardware Index: NA                                                            
 Instructions                                                                   
   Goto Table ID                 : 1                                            
                                                                                
 Flow 3                                                                         
 Match                                                                          
  Incoming Port : 2                     Ethernet Type    : IP                   
  Source MAC    : Any                   Destination MAC  : Any                  
  Source MAC Mask      : 000000-000000                                          
  Destination MAC Mask : 000000-000000                                          
  VLAN ID       : Any                   VLAN Priority    : Any                  
  Source IP Address      : Any                                                  
  Destination IP Address : Any                                                  
  IP Protocol   : UDP                                                           
  IP ECN        : Any                   IP DSCP          : Any                  
  Source Port   : Any                   Destination Port : 9999                 
  Source Port Range      : NA                                                   
  Destination Port Range : NA                                                   
  TCP Flags     : NA                                                            
  Custom Match One         : Any                                                
  Custom Match One Mask    : Any                                                
  Custom Match Two         : Any                                                
  Custom Match Two Mask    : Any                                                
  Custom Match Three       : Any                                                
  Custom Match Three Mask  : Any                                                
  Custom Match Four        : Any                                                
  Custom Match Four Mask   : Any                                                
 Attributes                                                                     
  Priority      : 300                   Duration         : 58 seconds           
  Hard Timeout  : 0 seconds             Idle Timeout     : 0 seconds            
  Byte Count    : 8972043               Packet Count     : 6091                 
  Flow Table ID : 1                     Controller ID    : 1                    
  Cookie        : 0x0                                                           
  Hardware Index: NA                                                            
 Instructions                                                                   
   Meter ID                      : 3                                            
   Apply Actions                                                                
     Output                      : 3                                            
                                                                                
 Flow 4                                                                         
 Match                                                                          
  Incoming Port : 3                     Ethernet Type    : ARP                  
  Source MAC    : Any                   Destination MAC  : Any                  
  Source MAC Mask      : 000000-000000                                          
  Destination MAC Mask : 000000-000000                                          
  VLAN ID       : Any                   VLAN Priority    : Any                  
  Source Protocol Address   : Any                                               
  Target Protocol Address   : Any                                               
  Source Hardware Address      : Any                                            
  Source Hardware Address Mask : 000000-000000                                  
  Target Hardware Address      : Any                                            
  Target Hardware Address Mask : 000000-000000                                  
  ARP Opcode    : Any                                                           
  IP ECN        : Any                   IP DSCP          : Any                  
  Source Port   : Any                   Destination Port : Any                  
  Source Port Range      : NA                                                   
  Destination Port Range : NA                                                   
  TCP Flags     : NA                                                            
  Custom Match One         : Any                                                
  Custom Match One Mask    : Any                                                
  Custom Match Two         : Any                                                
  Custom Match Two Mask    : Any                                                
  Custom Match Three       : Any                                                
  Custom Match Three Mask  : Any                                                
  Custom Match Four        : Any                                                
  Custom Match Four Mask   : Any                                                
 Attributes                                                                     
  Priority      : 1                     Duration         : 58 seconds           
  Hard Timeout  : 0 seconds             Idle Timeout     : 0 seconds            
  Byte Count    : 0                     Packet Count     : 0                    
  Flow Table ID : 1                     Controller ID    : 1                    
  Cookie        : 0x20000000000000                                              
  Hardware Index: NA                                                            
 Instructions                                                                   
   Apply Actions                                                                
     Output                      : 2                                            
                                                                                
 Flow 5                                                                         
 Match                                                                          
  Incoming Port : 2                     Ethernet Type    : IP                   
  Source MAC    : Any                   Destination MAC  : Any                  
  Source MAC Mask      : 000000-000000                                          
  Destination MAC Mask : 000000-000000                                          
  VLAN ID       : Any                   VLAN Priority    : Any                  
  Source IP Address      : 10.0.0.4/255.255.255.255                             
  Destination IP Address : 10.0.0.3/255.255.255.255                             
  IP Protocol   : Any                                                           
  IP ECN        : Any                   IP DSCP          : Any                  
  Source Port   : Any                   Destination Port : Any                  
  Source Port Range      : NA                                                   
  Destination Port Range : NA                                                   
  TCP Flags     : NA                                                            
  Custom Match One         : Any                                                
  Custom Match One Mask    : Any                                                
  Custom Match Two         : Any                                                
  Custom Match Two Mask    : Any                                                
  Custom Match Three       : Any                                                
  Custom Match Three Mask  : Any                                                
  Custom Match Four        : Any                                                
  Custom Match Four Mask   : Any                                                
 Attributes                                                                     
  Priority      : 1                     Duration         : 58 seconds           
  Hard Timeout  : 0 seconds             Idle Timeout     : 0 seconds            
  Byte Count    : 0                     Packet Count     : 0                    
  Flow Table ID : 1                     Controller ID    : 1                    
  Cookie        : 0x20000000000000                                              
  Hardware Index: NA                                                            
 Instructions                                                                   
   Apply Actions                                                                
     Output                      : 3                                            
                                                                                
 Flow 6                                                                         
 Match                                                                          
  Incoming Port : Any                   Ethernet Type    : Any                  
  Source MAC    : Any                   Destination MAC  : Any                  
  Source MAC Mask      : 000000-000000                                          
  Destination MAC Mask : 000000-000000                                          
  VLAN ID       : Any                   VLAN Priority    : Any                  
  Source IP Address      : Any                                                  
  Destination IP Address : Any                                                  
  IP Protocol   : Any                                                           
  IP ECN        : Any                   IP DSCP          : Any                  
  Source Port   : Any                   Destination Port : Any                  
  Source Port Range      : NA                                                   
  Destination Port Range : NA                                                   
  TCP Flags     : NA                                                            
  Custom Match One         : Any                                                
  Custom Match One Mask    : Any                                                
  Custom Match Two         : Any                                                
  Custom Match Two Mask    : Any                                                
  Custom Match Three       : Any                                                
  Custom Match Three Mask  : Any                                                
  Custom Match Four        : Any                                                
  Custom Match Four Mask   : Any                                                
 Attributes                                                                     
  Priority      : 0                     Duration         : 74 seconds           
  Hard Timeout  : 0 seconds             Idle Timeout     : 0 seconds            
  Byte Count    : 11904                 Packet Count     : 10                   
  Flow Table ID : 1                     Controller ID    : 1                    
  Cookie        : 0x0                                                           
  Hardware Index: NA                                                            
 Instructions                                                                   
   Apply Actions                                                                
    Controller Port          
Highlighted
Frequent Advisor

Re: Meter remark DSCP value not reflected in queue selection

(I had to split the post into two due to the character limit)

Aruba-2930F-24G-PoEP-4SFP(of-inst-aggregate)# sh openflow inst agg meters       
                                                                                
 OpenFlow Instance Meters                                                       
                                                                                
 Meter ID             : 3                                                       
 Flow Count           : 1                                                       
 Input Packet Count   : 6091                                                    
 Input Byte Count     : 8886769                                                 
 Duration             : 142                                                     
                                                                                
                            Precedence Packet/Byte                              
 Band Type Rate             Level      Count                                    
 --------- ---------------- ---------- ------------------------                 
 Mark      1000 kbps        0          7875682  
Aruba-2930F-24G-PoEP-4SFP(of-inst-aggregate)# sh openflow inst agg meter 3      
                                                                                
 OpenFlow Instance Meters                                                       
                                                                                
 Meter ID             : 3                                                       
 Flow Count           : 1                                                       
 Input Packet Count   : 6091                                                    
 Input Byte Count     : 8886769                                                 
 Duration             : 167                                                     
                                                                                
                            Precedence Packet/Byte                              
 Band Type Rate             Level      Count                                    
 --------- ---------------- ---------- ------------------------                 
 Mark      1000 kbps        0          7875682    
Showing the queues before the transmission

sh interface queue 3              
                                                                                
 Status and Counters - Port Counters for port 3                                 
                                                                                
  Name  :                                                                       
  MAC Address      : e0071b-c4c7fd                                              
  Link Status      : Up                                                         
  Port Enabled     : Yes                                                        
  Port Totals (Since boot or last clear) :                                      
   Rx Packets      : 45                 Tx Packets      : 28                    
   Rx Bytes        : 10,320             Tx Bytes        : 3,488                 
   Rx Drop Packets : 0                  Tx Drop Packets : 0                     
   Rx Drop Bytes   : 0                  Tx Drop Bytes   : 0                     
                                                                                
  Egress Queue Totals (Since boot or last clear) :                              
     Tx Packets         Dropped Packets    Tx Bytes           Dropped Bytes     
 Q1  24                 0                  2,320              0                 
 Q2  4                  0                  1,168              0   
Showing the queues After the transmission. Packets still went into queue 2 althought the DSCP is remarked to 24 (0x18) 

 sh interface queue 3              
                                                                                
 Status and Counters - Port Counters for port 3                                 
                                                                                
  Name  :                                                                       
  MAC Address      : e0071b-c4c7fd                                              
  Link Status      : Up                                                         
  Port Enabled     : Yes                                                        
  Port Totals (Since boot or last clear) :                                      
   Rx Packets      : 50                 Tx Packets      : 6,141                 
   Rx Bytes        : 11,264             Tx Bytes        : 8,988,878             
   Rx Drop Packets : 0                  Tx Drop Packets : 0                     
   Rx Drop Bytes   : 0                  Tx Drop Bytes   : 0                     
                                                                                
  Egress Queue Totals (Since boot or last clear) :                              
     Tx Packets         Dropped Packets    Tx Bytes           Dropped Bytes     
 Q1  43                 0                  14,998             0                 
 Q2  6,098              0                  8,973,880          0   

I have also attached a pcap file from the receiver that proves that the majority of the UDP packets have their DSCP remarked to 24 (0x18) instead of 40 (0x28). 

If you can please just perform a simple test that has a meter that remarks the DSCP and see if that new mark is reflected on the queue selection? 

Thanks!

Enas

Highlighted

Re: Meter remark DSCP value not reflected in queue selection

Hi Enas,

Using the data you've posted, we confirmed that we're seeing the same behavior on prior revisions of firmware as well. Would you be able to open a support ticket for this issue? Then we'd be able to prioritize a resolution into our ongoing development efforts. The data you've provided thusfar should be sufficient for the support ticket, so please submit it alongside the description of the issue (your writeup above will suffice).

Shaun

I am an HPE Employee
Highlighted
Frequent Advisor

Re: Meter remark DSCP value not reflected in queue selection

Thanks Shaun for your reply,

I am trying to open a support case and it keeps failing. I get this message after I fill all the info and click on create a case: (I have tried several times using two browsers)

We're very sorry!
The page you requested can not be found or displayed at this time. 

  • If you typed the URL yourself, please make sure that the spelling is correct.
  • If you clicked on a link to get here, there may be a problem with the link.
  • Try using your browser's "back" button or the "return to previous page" link below to choose a different link on that page.
  • Periodically we need to perform routine maintenance on our site, this usually takes from 3-5 minutes during which our pages are unavailable.
  • If this is a technical problem then we will be alerted and will resolve the issue as quickly as possible.

 

Can you guide me on how to successfully create a support ticket? Can't this thread be used to solve the issue? 

What is the estimation to get this bug solved? It is very urgent for us since the entire feature of remark meters does not work!! and It is the main feature we bought the switches for! (in addition to the custom fields with mask which is also not working, I have another thread opened for it and is still not resolved).

I appreciate any help you can provide us.
Enas

 

Highlighted

Re: Meter remark DSCP value not reflected in queue selection

Hi Enas,

I apologize that the support ticket filing process has added frustration. According to my contacts, you'll need to call 800-633-3600 and open a case with the SDN TEAM. Both the VAN controller and firmware are involved in your solution, but this looks to be an issue with firmware on the switches (not the VAN controller). 

I realize that it's not optimal to re-describe the issue when filing a ticket, but we funnel all support issues through our ticketing system so that they can be properly analyzed, reproduced, and prioritized relative to eachother and to new product development.

Shaun

I am an HPE Employee