8.1 Legacy Frame-Relay (placement of class)

JoeMJoeM ✭✭✭
in IEWB-RS Volume 2 Version 5 Lab 10

I understand the correct numbers for this excercise, and how they were calculated.  No problem here.

But I do have a doubt about where I can put the class -- VC vs Interface.

 

The SolutionGuide places the map-class into the VC's for on all three devices in the frame-relay (R3,R4,R5).

 

My strategy was:

  • R3 (two circuits):  place the map-class into the VC's/DLCI's 
  • R4/R5 (one circuit each):    place the class-map on the interface.

 

This required a little less configuration, and I have not found anything (WB-1) saying that I cannot place legacy MAP-CLASS directly on the interfaces.

 

Thanks for any clarification on this.

 

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Comments

  • JoeMJoeM ✭✭✭

    My output for R4.     It shows extra VC's, even with no frame-relay inverse arp.  I have no idea how those other VC's were populated.

           Access Target    Byte   Sustain   Excess    Interval  Increment Adapt
    VC     List   Rate      Limit  bits/int  bits/int  (ms)      (bytes)   Active
    413           256000    320    2560      0         10        320       -
    405           256000    320    2560      0         10        320       -
    402           256000    320    2560      0         10        320       -
    401           256000    320    2560      0         10        320       -
    403           256000    320    2560      0         10        320       -     <--only active VC

     

    SHOW FRAME-RELAY MAP gives the following. It only shows the one active VC (correct):

    Serial0/0 (up): ip 164.1.34.3 dlci 403(0x193,0x6430), static,
                  broadcast,
                  CISCO, status defined, active

     

     

    EDIT:    this same output also happens on R5.   populated VC's for show traffic-shape ,  but only one active (populated) in frame map.

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  • batouqbatouq

    The FR switch will tel the DTE end of all the PVC provisioned for it. So its normal to see the extra VCs. Though they UNUSED.

    Try show frame pvc | i DLCI you will see that they show up as STATUS: ACTIVE/USAGE: UNUSED

    Only the one you use (403) will show up as ACTIVE/USAGE LOCAL

    BR

    Sal 

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  • JoeMJoeM ✭✭✭

    I just put the command, and they do show up as they should.  UNUSED/USED     This matches the Frame Map

    But this still goes back to my initial QoS doubt about the placement of a legacy MAP-CLASS.      Can the MAP-CLASS be placed on the interface, or should we always place them on the VC's?  I do not seen an example of the legacy shaping being put directly on the interface.

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