[j-nsp] Destination Class Accounting: counters are zero

[Alex Arseniev]

Hello there,
This might help
http://www.juniper.net/techpubs/en_US/junos12.1/topics/concept/source-class-usage-guidelines-solution.html
<quote>
A source or destination class is applied to a packet only once during the 
routing table lookup. When a network prefix matches a class-usage policy, 
SCU is assigned to packets first; DCU is assigned only if SCU has not been 
assigned. Be careful when using both class types, since misconfiguration can 
result in uncounted packets.
</quote>
Rgds
Alex

----- Original Message ----- 
From: "Alexander Shikoff" <minotaur at crete.org.ua>
To: <juniper-nsp at puck.nether.net>
Sent: Tuesday, May 15, 2012 9:25 AM
Subject: [j-nsp] Destination Class Accounting: counters are zero


> Hello List,
>
> I have MX240 router (10.0 R4.7) with two peering links and two upstream 
> links.
> I need separate accounting of customer's traffic: to/from upstreams and
> to/from peerings.
> I configured an SCU input accounting on peering and upstream links,
> DCU and SCU output accounting on customer's link:
>
> minotaur at br1-gdr.ki# show interfaces ae0 unit 753
> vlan-id 753;
> family inet {
>    accounting {
>        source-class-usage {
>            output;
>        }
>        destination-class-usage;
>    }
>    no-redirects;
>    filter {
>        output bw-100M-U;
>    }
>    address 109.68.41.133/30;
> }
>
>
> Then I applied export policy to forwarding table, now every route
> has an assigned class, for example:
>
> minotaur at br1-gdr.ki# run show route juniper.net table Salt extensive | 
> match class
> Destination class: to-Upstream
> Source class: from-Upstream
>
>
> Now let's check extensive information about customer's interface:
> minotaur at br1-gdr.ki# run show interfaces ae0.753 extensive
>  Logical interface ae0.753 (Index 97) (SNMP ifIndex 197) (Generation 168)
>    Description: Downstream: Digital Screens Kurenevka
>    Flags: SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.753 ]  Encapsulation: ENET2
>    Statistics        Packets        pps         Bytes          bps
>    Bundle:
>        Input :    1355645712      10824 1744298393787    125788672
>        Output:     676249013       3535   50730352637      1954232
>    Link:
>      ge-2/0/5.753
>        Input :    1355645712      10824 1744298393787    125788672
>        Output:     676249013       3535   50730352637      1954232
>    Marker Statistics:   Marker Rx     Resp Tx   Unknown Rx   Illegal Rx
>      ge-2/0/5.753               0           0            0            0
>    Protocol inet, MTU: 1500, Generation: 198, Route table: 6
>      Flags: No-Redirects, DCU, SCU-out
>                                               Packets                Bytes
>      Destination class            (packet-per-second)    (bits-per-second)
>
>                         to-Other              1966210            997515326
>                                  (                  9) ( 
> 4129)
>                       to-Peering               904424           1216778711
>                                  (               2932) ( 
> 32529971)
>                      to-Upstream                    0                    0
>                                  (                  0) ( 
> 0)
>                                               Packets                Bytes
>      Source class                 (packet-per-second)    (bits-per-second)
>
>                       from-Other                88128              5568059
>                                  (                  0) ( 
> 53)
>                     from-Peering               534506             37189579
>                                  (               1136) ( 
> 664770)
>                    from-Upstream                16017              1066310
>                                  (                 97) ( 
> 49421)
>      Output Filters: bw-100M-U-ae0.753-o,
>      Addresses, Flags: Is-Preferred Is-Primary
>        Destination: 109.68.41.132/30, Local: 109.68.41.133, Broadcast: 
> 109.68.41.135, Generation: 177
>    Protocol multiservice, MTU: Unlimited, Generation: 199, Route table: 6
>      Policer: Input: __default_arp_policer__
>
>
> Why 'to-Upstream' counters are zeroes?
> Thanks in advance!
>
> -- 
> MINO-RIPE
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