HP 5500-HI/5800/5900/5930/7900 - number of MPLS labels

[MichaelM55]

Hello,

what´s the (maximum) number of MPLS labels being supported on

• 5500-HI
• 5800
• 5900
• 5930
• 7900

switches?

Thanks in advance

[Carsick0]

Hi

I don't have all of the switches listed, but on checking the 5900, the info is all in the manuals (see HP 5920 5900 Switch Series MPLS configuration Guide). The MPLS label field is a 20 bit field and this equates to 1048575 which is the same as shown in the user guide. I've not used MPLS, but this would appear to the info you are after.

Carrick

[MichaelM55]

Well, I´m actually interested in the hardware limit of the switches. All mentioned devices have different ASICs.

Within the datasheets we learn about the maximum ARP table, maximum MAC table,... It´s all about TCAM size.

Therefore it would be great to know many MPLS labels can I get on those different devices.

[SBaker]

Hi Michael,

MPLS Label number support:

• 5500-HI =4,000
• 5800 = 4,000 (exluding the 5820 and 5810)
• 5900 = 4,000
• 5930 = 4,000
• 7900 = Current code does not yet support MPLS

[MichaelM55]

Thanks Baker,

I´m actually asking myself how I can count those labels, currently being in use, as I´m just playing with MPLS, e.g. on a A5500-HI, display mpls label all says:

  dis mpls label all
 Label alloc state: '.' means not used, '$' means used....... ........ ........
----------------------------------Static Label---------------------------------                                                                                                                  16:........ ........ ........ ........  ........ ........ ........ ........
    80:........ ........ ........ ........  ........ ........ ........ ........                                                                                                                 144:........ ........ ........ ........  ........ ........ ........ ........
   208:........ ........ ........ ........  ........ ........ ........ ........
   272:........ ........ ........ ........  ........ ........ ........ ........
   336:........ ........ ........ ........  ........ ........ ........ ........
   400:........ ........ ........ ........  ........ ........ ........ ........
   464:........ ........ ........ ........  ........ ........ ........ ........
   528:........ ........ ........ ........  ........ ........ ........ ........
   592:........ ........ ........ ........  ........ ........ ........ ........

   656:........ ........ ........ ........  ........ ........ ........ ........
   720:........ ........ ........ ........  ........ ........ ........ ........
   784:........ ........ ........ ........  ........ ........ ........ ........
   848:........ ........ ........ ........  ........ ........ ........ ........
   912:........ ........ ........ ........  ........ ........ ........ ........
   976:........ ........ ........ ........  ........ ........
----------------------------------Dynamic Label--------------------------------
  1024:$.$$$$.$ $$$$$$$$ $$$.$$$$ $$$$$$.$  $$$..... ..$....$ $$$$$$.. ........
  1088:........ ........ ........ ........  ........ ........ ........ ........
  1152:........ ........ ........ ........  ........ ........ ........ ........
  1216:........ ........ ........ ........  ........ ........ ........ ........
  1280:........ ........ ........ ........  ........ ........ ........ ........
  1344:........ ........ ........ ........  ........ ........ ........ ........
  1408:........ ........ ........ ........  ........ ........ ........ ........
  1472:........ ........ ........ ........  ........ ........ ........ ........
  1536:........ ........ ........ ........  ........ ........ ........ ........
  1600:........ ........ ........ ........  ........ ........ ........ ........

  1664:........ ........ ........ ........  ........ ........ ........ ........
  1728:........ ........ ........ ........  ........ ........ ........ ........
  1792:........ ........ ........ ........  ........ ........ ........ ........
  1856:........ ........ ........ ........  ........ ........ ........ ........
  1920:........ ........ ........ ........  ........ ........ ........ ........
  1984:........ ........ ........ ........  ........ ........ ........ ........

:
:
:

204480:........ ........ ........ ........  ........ ........ ........ ........

204544:........ ........ ........ ........  ........ ........ ........ ........
204608:........ ........ ........ ........  ........ ........ ........ ........
204672:........ ........ ........ ........  ........ ........ ........ ........
204736:........ ........ ........ ........  ........ ........ ........ ........

On a A5900, I get:

display mpl label ?
  INTEGER<16-1048575>  A label or the start label of a label range
  all                  Specify all labels

display mpl label all
Label          Owner          State
16             -              Idle
17             -              Idle
18             -              Idle
19             -              Idle
20             -              Idle
21             -              Idle
22             -              Idle
23             -              Idle
24             -              Idle
25             -              Idle
26             -              Idle
27             -              Idle
28             -              Idle
29             -              Idle
30             -              Idle
31             -              Idle
32             -              Idle
33             -              Idle
34             -              Idle
35             -              Idle