[j-nsp] Aggregated SONET: Incorrect load balancing

[Andrew Degtiariov]

Hello!
We have problems with incorrect balancing on asX interfaces: one of
interfaces from bundle always full loaded but other have a free
bandwidth.

ad at host> show interfaces as0 detail
Physical interface: as0, Enabled, Physical link is Up
  Interface index: 128, SNMP ifIndex: 38, Generation: 11
  Description: XXXXXX
  Link-level type: Cisco-HDLC, MTU: 4474, Speed: 311040kbps, Minimum
links needed: 1
  Device flags   : Present Running
  Interface flags: SNMP-Traps Internal: 0x4000
  Link flags     : Keepalives
  Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
  Last flapped   : Never
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :       88014189685409            100101256 bps
   Output bytes  :      233504346126377            224426680 bps
   Input  packets:         215881346509                39284 pps
   Output packets:         320492035869                36532 pps

  Logical interface as0.0 (Index 67) (SNMP ifIndex 42) (Generation 6)
    Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: Cisco-HDLC
    Statistics        Packets        pps         Bytes          bps
    Bundle:
        Input :  215879698457      39284 88014153428265    100101256
        Output:  320490390799      36490 233504161135208    224369696
    Link:
      so-1/3/0:0.0
        Input :   15050048922      27106 6085042177400     66550112
        Output:   16070445975      12811 11743234420336     76498040
      so-1/3/0:1.0
        Input :      13382313      12178    4479819115     33551144
        Output:      26537823      23679   20157131134    147871656
    Protocol inet, MTU: 4470, Generation: 13, Route table: 0
      Flags: None
      Addresses, Flags: Is-Preferred Is-Primary
        ----cut-cut----
    Protocol mpls, MTU: 4458, Generation: 14, Route table: 0
      Flags: None

ad at host> show configuration interfaces as0
description XXXX;
encapsulation cisco-hdlc;
aggregated-sonet-options {
    minimum-links 1;
    link-speed oc3;
}
unit 0 {
    family inet {
        address ---cut--cut---;
    }
    family mpls;
}

ad at host> show configuration interfaces so-1/3/0:0
clocking external;
sonet-options {
    no-payload-scrambler;
    aggregate as0;
}
ad at host> show configuration interfaces so-1/3/0:1
clocking external;
sonet-options {
    no-payload-scrambler;
    aggregate as0;
}

ad at host>

Platform: Juniper M20, JUNOS 7.5R2.8

Is there any ways to load interfaces in bundle as0 more fairly?

-- 
Andrew Degtiariov
DA-RIPE