NCS 5500: Leven van een pakket (douanevervoer, punt/inspuiting, Ping Path)

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Bijgewerkt:1 augustus 2021

Document-id:217276

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Inhoud

Inleiding

Leven van een pakket in doorsturen van ASIC

ASIC voor doorsturen van leidingen

IRPP (Poortbepaling, parser)

Punt

Pad tussen twee CPU-knooppunten

Pad van NPU naar RP

Injecteren van RP naar NPU of LC CPU

Pad van LC CPU naar NPU injecteren

CLI voor Punt/Injecteer Debugging

Afstandsbediening

Pad: Echo-aanvraag

Pad: Echo-antwoord

Lokale ping

Pad: Echo-aanvraag

Pad: Echo-antwoord

Handige debugs:

Topologie

Opdrachten om afstandsbediening te controleren

Echo-aanvraag: Lokale RP: TX

Echo-aanvraag: Remote LC: RX

Echo-antwoord: Remote-knooppunt (LC): TX

Echo-antwoord: Lokaal knooppunt (LC): RX

Lokale ping

Inleiding

Dit document beschrijft het pad dat is genomen door de pakketten van de echo van het ICMP/Echo Reactie in NCS 55xx (Fretta) vakje.

Leven van een pakket in doorsturen van ASIC

IRPP

Een pakket wordt ontvangen op een interface en doorgegeven naar IRPP, waar de eerste 128 bytes worden verwijderd en verwerkt. Hierdoor wordt de kop van het interne systeem toegevoegd.

ITM

Het pakket wordt opgeslagen in DRAM/OCB

ITPP

Indien nodig herschrijven van de systeemheader (multicast replicatie, poortbewaking, enz.)

Packets worden gesplitst in cellen en geladen om te maken

ERPP

De cellen worden ontvangen en opnieuw gemonteerd. De eerste 128 bytes worden geëxtraheerd en passen alle link-laagfilters, uitgaande ACL’s, uitgaande replicatie (multicast) toe

ETPP/ETM

Het gehele pakket wordt in een buffer opgeslagen totdat het pakket is uitgezet. Systeemkopregels worden verwijderd.

ASIC voor doorsturen van leidingen

IRPP (Poortbepaling, parser)

Poortbeëindiging: Packet dat wordt ontvangen vanaf netwerkinterface/CPU/recirculatie

Bepaal de bronpoort en merk het pakket mee.
Beslissen van het oorspronkelijke programma voor gebruik in Parser.
Identificeer waar de netwerkheader begint.

Parser: Extract EtherSwitch, MAC-adressen, bepalen offset voor de volgende fasen in de pijpleiding.

IRP (Line Layer, VLAN Trans)

Link Layer: Filtering op L2 en bronadresverificatie.

VLAN-omzetting: We stellen de logische interface van het pakje in kaart.

Punt

Door een gebrek aan TCAM-middelen zijn er slechts een paar lpg-items beschikbaar op de NPU.
Belangrijke LPTS-raadpleging wordt uitgevoerd bij SW LPTS Pre-IFIB op LC Netio
LPTS-puntpakket van NPU naar RP rechtstreeks via PMF TCAM raadpleging:
- OSPF, OSPFv3 mcast, ISIS-pakketten worden rechtstreeks naar actieve en standby RP gestraft
LPTS puntpakket van NPU naar lokale CPU via raadpleging van PMF TCAM:
- Elk protocol dat TCP, UDP gebruikt; ICMP, ND
L2-protocolpakketten worden via de BRCM CPU-val naar LC gestraft:
- ARP, RARP, CDP, LACP, LDP, Ether-link OAM, MACSec
Uitzonderingspakketten worden via de BRCM CPU-val naar LC gestraft.
- TTL0, TTL1, MTU Overboden, Optiepakketten

Pad tussen twee CPU-knooppunten

Pad van NPU naar RP

RX Forus-pakketten worden op NPU herhaald. De ene wordt naar de actieve RP gestuurd en de andere naar de Stby RP

Injecteren van RP naar NPU of LC CPU

L3-pakketten worden direct aan NPU geïnjecteerd indien de nabijheid van de voorvoegsel is voltooid of als het een pakketje van vóór de route is

L3-pakketten worden ingespoten op LC CPU’s voor het geval:

De prefixnabijheid is GLEAN.
MPLS-voorroutepakket
Packet size is groter dan MTU.

Pad van LC CPU naar NPU injecteren

Deze pakketten worden van LC CPU aan NPU toegediend:

ARP-, ND-, ICMP-Echo-respons, gefragmenteerde pakketten
CDP, LACP, LLDP, Ether-link OAM-pakketten

CLI voor Punt/Injecteer Debugging

Show SPP node counters location <>

show netio chain 
     
     
       location <> 
     

show netio drop location <>

show ipv4/ipv6 traffic location <>

show fwd statistics location <>

show lpts pifib entry brief statistics location <>

show controllers fia diagshell 
     
     
       "diag counters g cdsp" location <> 
     

show interface <> location <>

Afstandsbediening

Pad: Echo-aanvraag

Local Node[ICMP(RP) -> IP I/O(RP) -> NetIO/Forwarder(RP) -> SPP(RP) -> NPU] -> wire -> Remote[NPU -> LPTS(HW) -> SPP(LC) -> NetIO/Forwarder(LC) -> LPTS(SW)(LC) -> IP I/O (LC) -> ICMP (LC)]

Pad: Echo-antwoord

Remote Node[IPv4/ICMP (LC) -> FWD/NetIO (LC) -> SPP (LC) -> NPU] -> wire -> Local Node[LPTS(HW) -> SPP(LC) -> NetIO/Forwarder(LC) -> NetIO(RP) -> IP I/O (RP) -> ICMP (RP)]

Lokale ping

Pad: Echo-aanvraag

RP(ICMP/IPv4 IO -> netio -> SPP -> CE) -> LC(SPP -> netio -> ICMP/ipv4 IO)

Pad: Echo-antwoord

LC(IPv4 IO/ICMP -> Netio -> SPP -> CE) -> RP(SPP -> net -> ipv4 io/ICMP)

Handige debugs:

debug icmp ipv4 location 0/0/CPU0

debug ipv4 packet location 0/0/CPU0

debug ipv4 ping events location 0/0/CPU0

Topologie

Fretta_1(GigabitEthernet0/0/0/16 ) <---->(GigabitEthernet0/0/0/16 ) Fretta_2



RP/0/RP0/CPU0:fretta_1#  ping 1.1.16.2 count 10000

Opdrachten om afstandsbediening te controleren

Echo-aanvraag: Lokale RP: TX

Path: ICMP(RP) -> IP I/O(RP) -> NetIO/Forwarder(RP) -> SPP(RP) -> NPU

1. I/O via IP: Controleer of Echo-aanvraag is gegenereerd:

show ipv4 traffic brief

ICMP statistics:
  Sent: 0 admin unreachable, 0 network unreachable
        0 host unreachable, 0 protocol unreachable
        0 port unreachable, 0 fragment unreachable
        0 time to live exceeded, 0 reassembly ttl exceeded
        10000 echo request, 0 echo reply
        0 mask request, 0 mask reply
        0 parameter error, 0 redirects
        10000 total

2. NetIO

RP/0/RP0/CPU0:fretta_1#show netio clients location 0/rP0/CPU0 

Counters                  Errors/Total  
----------------------------------------
Output                        0/10019  
Input                         0/11804   
Puntback                      0/0       
Jump                          0/0       
Driver Output                 0/10002   

Mutex Bypass Counters        Total      
----------------------------------------
Egress handled               0           
Egress chainwalked           10006       
Egress dropped               0           
Ingress handled              10000       
Ingress chainwalked          0           
Ingress dropped              0           



ClientID         Drop/Total        Drop/Total      Cur/High/Max    Cur/High/Max 
--------------------------------------------------------------------------------
ipv6_icmp           0/0               0/0             0/0/1000        0/0/1000  
icmp                0/10000           0/0             0/1/1000        0/0/1000  




If ping is failing then check if it is getting dropped in Netio:

RP/0/RP0/CPU0:fretta_1#show netio drops location 0/rP0/CPU0 
Thu Apr 20 20:28:09.577 UTC

Drops for interfaces on node 0/RP0/CPU0

No drops

3. SPP

RP/0/RP0/CPU0:fretta_1#show spp node-counters 
Thu Apr 20 20:29:05.785 UTC
0/0/CPU0:
fretta/classify
      forwarded to spp clients:           10006
 forwarded NPU packet to NetIO:           10006
      dropped in classify node:              24
         Fwded to CoPP sampler:               1
                      PUNT ARP:               1
                     PUNT IFIB:           10006
                IFIB RAWIP4_FM:           10000
                IFIB RAWIP6_FM:               6
-------------------------------
client/inject
        pkts injected into spp:           10002
  NetIO->NPU injected into spp:               2
  NetIO->CPU injected into spp:           10000
          NetIO->NPU PROTO ARP:               2
           NetIO->CPU PKT LPTS:           10000
-------------------------------
socket/rx
                ether raw pkts:           10031
-------------------------------
socket/tx
                       ce pkts:           10002
-------------------------------
client/punt
              punted to client:           10007
-------------------------------

0/RP0/CPU0:
socket/rx
                ether raw pkts:           10002
           mgmt interface pkts:            3204
-------------------------------
socket/tx
                       ce pkts:           10000
           mgmt interface pkts:               5
-------------------------------
fretta/classify
      forwarded to spp clients:           13204
 forwarded CPU packet to NetIO:           10000
forwarded Mgmt packet to NetIO:            3204
      dropped in classify node:               2
-------------------------------
client/inject
        pkts injected into spp:           10005
  NetIO->NPU injected into spp:           10000
     MGMT_IF injected into spp:               5
NetIO->NPU PROTO IPV4_PREROUTE:           10000
-------------------------------
client/punt
              punted to client:           13204
-------------------------------

4. Controleer of Echo-aanvraag via e-mail is verstuurd:

 RP/0/RP0/CPU0:fretta_1#show controllers gigabitEthernet 0/0/0/16 stats | be Egress
Thu Apr 20 21:17:28.176 UTC

Egress:
    Output total bytes          = 1140270
        Output good bytes           = 1140270

    Output total packets        = 10004
    Output 802.1Q frames        = 0
    Output pause frames         = 0
    Output pkts 64 bytes        = 1
    Output pkts 65-127 bytes    = 10003
    Output pkts 128-255 bytes   = 0
    Output pkts 256-511 bytes   = 0
    Output pkts 512-1023 bytes  = 0
    Output pkts 1024-1518 bytes = 0
    Output pkts 1519-Max bytes  = 0

    Output good pkts            = 10004
    Output unicast pkts         = 10000
    Output multicast pkts       = 3
    Output broadcast pkts       = 1

    Output drop underrun        = 0
    Output drop abort           = 0
    Output drop other           = 0

    Output error other          = 0

Echo-aanvraag: Remote LC: RX

Path: NPU -> LPTS(HW) -> SPP(LC) -> NetIO/Forwarder(LC) -> LPTS(SW)(LC) -> IP I/O (LC) -> ICMP (LC)

1. Controleer of de verpakking via de draad is ontvangen:

RP/0/RP0/CPU0:fretta_2#show controllers gigabitEthernet 0/0/0/16 stats 
Thu Apr 20 20:44:22.115 UTC
Statistics for interface GigabitEthernet0/0/0/16 (cached values):

Ingress: 
    Input total bytes           = 1140270
    Input good bytes            = 1140270

    Input total packets         = 10004
    Input 802.1Q frames         = 0
    Input pause frames          = 0
    Input pkts 64 bytes         = 1
    Input pkts 65-127 bytes     = 10003

2. Controleer de lpg-teller.

RP/0/RP0/CPU0:fretta_2#show lpts pifib hardware entry brief location 0/0/CPU0 | i ICMP
Thu Apr 20 20:45:54.687 UTC

DestIP               SrcIP                vrf   L4   LPort/Type   RPort  npu  Flowtype           DestNode     PuntPrio Accept Drop  
0.0.0.0              0.0.0.0              0     1    ECHO         0      0    ICMP-local         Local LC     MEDIUM   10000  0

3. SPP

RP/0/RP0/CPU0:fretta_2#show spp node-counters location 0/0/CPU0

fretta/classify
      forwarded to spp clients:           10006
 forwarded NPU packet to NetIO:           10006
      dropped in classify node:              22
         Fwded to CoPP sampler:               2
                      PUNT ARP:               2
                     PUNT IFIB:           10006
               IFIB IPv4_STACK:           10000
                IFIB RAWIP6_FM:               6
-------------------------------
client/inject
        pkts injected into spp:           10002
  NetIO->NPU injected into spp:           10002
          NetIO->NPU PROTO ARP:               2
         NetIO->NPU PROTO IPV4:           10000
-------------------------------
socket/rx
                ether raw pkts:           10030
-------------------------------
socket/tx
                       ce pkts:           10002
-------------------------------
client/punt
              punted to client:           10008
-------------------------------

4. Opmerking

show netio chains gigabitEthernet 0/0/0/16 location 0/0/cpu0

<12> (ipv4)   Stats IN: 10000 pkts, 1140000 bytes; OUT: 10000 pkts, 1140000 bytes

       Protocol        SAFI       Pkts In    Bytes In    Pkts Out   Bytes Out
---------------  ----------    ----------  ----------  ----------  ----------
           ipv4     Unicast         10000     1140000       10000     1000000
           ipv4   Multicast             0           0           0           0
           ipv4   Broadcast             0           0           0           0
           ipv6     Unicast             0           0           0           0
           ipv6   Multicast             0           0           0           0

RP/0/RP0/CPU0:fretta_2#show netio clients location 0/0/CPU0 
Thu Apr 20 20:52:26.802 UTC

Counters                  Errors/Total  
----------------------------------------
Output                        0/10002   
Input                         0/10008   
Puntback                      0/0       
Jump                          0/0       
Driver Output                 0/10002   

XIPC queues              Dropped/Queued    Cur/High/Max 
------------------------------------------------------------
OutputL                       0/10000         0/1/6000  
OutputH                       0/2             0/1/3000  
Puntback                      0/0             0/0/6000  

                   Input              Punt         XIPC InputQ      XIPC PuntQ  
ClientID         Drop/Total        Drop/Total      Cur/High/Max    Cur/High/Max 
--------------------------------------------------------------------------------
ipv6_icmp           0/0               0/0             0/0/1000        0/0/1000  
icmp                0/10000           0/0             0/1/1000        0/0/1000  
clns              L 0/0               0/0           L 0/0/1000        0/0/0     
                  H 0/0                             H 0/0/1000                  
ipv6_io             0/0               0/0             0/0/1000        0/0/1000  
ipv6_nd             0/0               0/0             0/0/1500        0/0/1000  
l2snoop             0/0               0/0             0/0/1000        0/0/0     
ether_sock          0/0               0/0        
tp_oam              0/0               0/0             0/0/1000        0/0/1000  
icmpv6_unreach_jump        0/0               0/0        
arp                 0/2               0/0             0/1/1000        0/0/1000  
mpls_io             0/0               0/0             0/0/1000        0/0/1000  
ipv4                0/0               0/0             0/0/1000        0/0/1000  
ipv6                0/0               0/0             0/0/1000        0/0/1000  

Key:
  L = queue for lower priority packets
  H = queue for higher priority packets

5. FW-status

RP/0/RP0/CPU0:fretta_2#show fwd statistics all location 0/0/cpu0
Thu Apr 20 20:51:50.347 UTC
RECEIVE STATISTICS SUMMARY:
rx_pkts: 10008 
punt_pkts: 10008 
ingress_total_drops: 0 
TRANSMIT STATISTICS SUMMARY:
inject_pkts: 10002 
tx_pkts: 10002 
egress_total_drops: 0 
RP/0/RP0/CPU0:fretta_2#

6. IP IOS-software

show ipv4 traffic brief location 0/0/CPU0

 Rcvd: 0 admin unreachable, 0 network unreachable
        0 host unreachable, 0 protocol unreachable
        0 port unreachable, 0 fragment unreachable
        0 time to live exceeded, 0 reassembly ttl exceeded
        10000 echo request, 0 echo reply
        0 mask request, 0 mask reply
        0 redirect, 0 parameter error
        0 source quench, 0 timestamp, 0 timestamp reply
        0 router advertisement, 0 router solicitation
        10000 total, 0 checksum errors, 0 unknown

Echo-antwoord: Remote-knooppunt (LC): TX

Path: IPv4/ICMP (LC) -> FWD/NetIO (LC) -> SPP (LC) -> NPU

1. IP IO

RP/0/RP0/CPU0:fretta_2#show ipv4 traffic brief location 0/0/CPU0

ICMP statistics:
  Sent: 0 admin unreachable, 0 network unreachable
        0 host unreachable, 0 protocol unreachable
        0 port unreachable, 0 fragment unreachable
        0 time to live exceeded, 0 reassembly ttl exceeded
        0 echo request, 10000 echo reply
        0 mask request, 0 mask reply
        0 parameter error, 0 redirects
        10000 total

2. Opmerking

show netio chains gigabitEthernet 0/0/0/16 location 0/0/cpu0

<12> (ipv4)   Stats IN: 10000 pkts, 1140000 bytes; OUT: 10000 pkts, 1140000 bytes

       Protocol        SAFI       Pkts In    Bytes In    Pkts Out   Bytes Out
---------------  ----------    ----------  ----------  ----------  ----------
           ipv4     Unicast         10000     1140000       10000     1000000
           ipv4   Multicast             0           0           0           0
           ipv4   Broadcast             0           0           0           0
           ipv6     Unicast             0           0           0           0
           ipv6   Multicast             0           0           0           0

RP/0/RP0/CPU0:fretta_2#show netio clients location 0/0/CPU0 
Thu Apr 20 20:52:26.802 UTC

Counters                  Errors/Total  
----------------------------------------
Output                        0/10002   
Input                         0/10008   
Puntback                      0/0       
Jump                          0/0       
Driver Output                 0/10002   

XIPC queues              Dropped/Queued    Cur/High/Max 
------------------------------------------------------------
OutputL                       0/10000         0/1/6000  
OutputH                       0/2             0/1/3000  
Puntback                      0/0             0/0/6000

3. STATEN VAN DE FWD

 RP/0/RP0/CPU0:fretta_2#show fwd statistics all location 0/0/cpu0
Thu Apr 20 20:51:50.347 UTC
RECEIVE STATISTICS SUMMARY:
rx_pkts: 10008 
punt_pkts: 10008 
ingress_total_drops: 0 
TRANSMIT STATISTICS SUMMARY:
inject_pkts: 10002 
tx_pkts: 10002 
egress_total_drops: 0

4. SPP

 show spp node-counters location 0/0/CPU0

fretta/classify
      forwarded to spp clients:           10006
 forwarded NPU packet to NetIO:           10006
      dropped in classify node:              22
         Fwded to CoPP sampler:               2
                      PUNT ARP:               2
                     PUNT IFIB:           10006
               IFIB IPv4_STACK:           10000
                IFIB RAWIP6_FM:               6
-------------------------------
client/inject
        pkts injected into spp:           10002
  NetIO->NPU injected into spp:           10002
          NetIO->NPU PROTO ARP:               2
         NetIO->NPU PROTO IPV4:           10000
-------------------------------
socket/rx
                ether raw pkts:           10030
-------------------------------
socket/tx
                       ce pkts:           10002
-------------------------------
client/punt
              punted to client:           10008
-------------------------------

5. Controleer of het pakje naar buiten is gestuurd.

RP/0/RP0/CPU0:fretta_2#show controllers gigabitEthernet 0/0/0/16 stats 
Thu Apr 20 21:20:22.593 UTC
Statistics for interface GigabitEthernet0/0/0/16 (cached values):
Egress:
    Output total bytes          = 1140270
    Output good bytes           = 1140270

    Output total packets        = 10004
    Output 802.1Q frames        = 0
    Output pause frames         = 0
    Output pkts 64 bytes        = 1
    Output pkts 65-127 bytes    = 10003
    Output pkts 128-255 bytes   = 0
    Output pkts 256-511 bytes   = 0
    Output pkts 512-1023 bytes  = 0
    Output pkts 1024-1518 bytes = 0
    Output pkts 1519-Max bytes  = 0

    Output good pkts            = 10004
    Output unicast pkts         = 10000
    Output multicast pkts       = 3
    Output broadcast pkts       = 1

    Output drop underrun        = 0
    Output drop abort           = 0
    Output drop other           = 0

    Output error other          = 0

6. Interfacestatistieken

RP/0/RP0/CPU0:fretta_2#show int gigabitEthernet 0/0/0/16
Thu Apr 20 21:21:37.942 UTC
GigabitEthernet0/0/0/16 is up, line protocol is up 
  Interface state transitions: 1
  Hardware is GigabitEthernet, address is 008a.964a.7040 (bia 008a.964a.7040)
  Internet address is 1.1.16.2/24
  MTU 1514 bytes, BW 1000000 Kbit (Max: 1000000 Kbit)
     reliability 255/255, txload 0/255, rxload 0/255
  Encapsulation ARPA,
  Full-duplex, 1000Mb/s, link type is force-up
  output flow control is off, input flow control is off
  Carrier delay (up) is 10 msec
  loopback not set,
  Last link flapped 01:00:13
  ARP type ARPA, ARP timeout 04:00:00
  Last input 00:56:58, output 00:56:58
  Last clearing of "show interface" counters never
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     10004 packets input, 1140270 bytes, 0 total input drops
     3 drops for unrecognized upper-level protocol
     Received 1 broadcast packets, 3 multicast packets
              0 runts, 0 giants, 0 throttles, 0 parity
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     10004 packets output, 1140270 bytes, 0 total output drops
     Output 1 broadcast packets, 3 multicast packets
     0 output errors, 0 underruns, 0 applique, 0 resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

Echo-antwoord: Lokaal knooppunt (LC): RX

LPTS(HW) -> SPP(LC) -> NetIO/Forwarder(LC) -> LPTS PreIFIB Lookup -> SPP(LC) -> CE(LC) -> SPP(RP) -> NetIO(RP) -> IP I/O (RP) -> ICMP (RP)

1. Controleer of pakketten via draad worden ingevoerd.

RP/0/RP0/CPU0:fretta_1#show controllers gigabitEthernet 0/0/0/16 stats 
Thu Apr 20 21:17:28.176 UTC
Statistics for interface GigabitEthernet0/0/0/16 (cached values):

Ingress: 
    Input total bytes           = 1140270
    Input good bytes            = 1140270

    Input total packets         = 10004
    Input 802.1Q frames         = 0
    Input pause frames          = 0
    Input pkts 64 bytes         = 1
   Input pkts 65-127 bytes     = 10003
    Input pkts 128-255 bytes    = 0
    Input pkts 256-511 bytes    = 0
    Input pkts 512-1023 bytes   = 0
    Input pkts 1024-1518 bytes  = 0
    Input pkts 1519-Max bytes   = 0

    Input good pkts             = 10004
    Input unicast pkts          = 10000
    Input multicast pkts        = 3
    Input broadcast pkts        = 1

    Input drop overrun          = 0
    Input drop abort            = 0
    Input drop invalid VLAN     = 0
    Input drop invalid DMAC     = 0
    Input drop invalid encap    = 0
    Input drop other            = 0

    Input error giant           = 0
    Input error runt            = 0
    Input error jabbers         = 0
    Input error fragments       = 0
    Input error CRC             = 0
    Input error collisions      = 0
    Input error symbol          = 0
    Input error other           = 0

    Input MIB giant             = 0
    Input MIB jabber            = 0
    Input MIB CRC               = 0

2. LPTS-tellers

RP/0/RP0/CPU0:fretta_1#show lpts pifib hardware entry brief locatio 0/0/CPU0

0.0.0.0              0.0.0.0              0     1    ECHOREPLY    0      0    ICMP-app-default   Local LC     LOW      10000  0

3. SPP op LC

RP/0/RP0/CPU0:fretta_1#show spp node-counters location 0/0/CPU0 
Thu Apr 20 21:01:31.974 UTC
fretta/classify
      forwarded to spp clients:           10006
 forwarded NPU packet to NetIO:           10006
      dropped in classify node:              24
         Fwded to CoPP sampler:               1
                      PUNT ARP:               1
                     PUNT IFIB:           10006
                IFIB RAWIP4_FM:           10000
                IFIB RAWIP6_FM:               6
-------------------------------
client/inject
        pkts injected into spp:           10002
  NetIO->NPU injected into spp:               2
  NetIO->CPU injected into spp:           10000
          NetIO->NPU PROTO ARP:               2
           NetIO->CPU PKT LPTS:           10000
-------------------------------
socket/rx
                ether raw pkts:           10031
-------------------------------
socket/tx
                       ce pkts:           10002
-------------------------------
client/punt
              punted to client:           10007
-------------------------------

4. Netisering op LC

RP/0/RP0/CPU0:fretta_1# show netio chains gigabitEthernet 0/0/0/16 location 0/0/cpu0

<12> (ipv4)   Stats IN: 10000 pkts, 1140000 bytes; OUT: 0 pkts, 0 bytes

Protocol SAFI counts:
--------------------

       Protocol        SAFI       Pkts In    Bytes In    Pkts Out   Bytes Out
---------------  ----------    ----------  ----------  ----------  ----------
           ipv4     Unicast         10000     1140000           0           0
           ipv4   Multicast             0           0           0           0
           ipv4   Broadcast             0           0           0           0
           ipv6     Unicast             0           0           0           0
           ipv6   Multicast             0           0           0           0

5. De FWD staat op LC.

RP/0/RP0/CPU0:fretta_1#show fwd statistics all location 0/0/CPU0 
Thu Apr 20 21:04:27.767 UTC
RECEIVE STATISTICS SUMMARY:
rx_pkts: 10007 
punt_pkts: 10007 
ingress_total_drops: 0 
TRANSMIT STATISTICS SUMMARY:
inject_pkts: 10002 
tx_pkts: 10002 
egress_total_drops: 0 
RP/0/RP0/CPU0:fretta_1#

5. SPP op LC om naar SPP te sturen op RP.

RP/0/RP0/CPU0:fretta_1#show spp node-counters location 0/0/CPU0 
Thu Apr 20 21:01:31.974 UTC
fretta/classify
      forwarded to spp clients:           10006
 forwarded NPU packet to NetIO:           10006
      dropped in classify node:              24
         Fwded to CoPP sampler:               1
                      PUNT ARP:               1
                     PUNT IFIB:           10006
                IFIB RAWIP4_FM:           10000
                IFIB RAWIP6_FM:               6
-------------------------------
client/inject
        pkts injected into spp:           10002
  NetIO->NPU injected into spp:               2
  NetIO->CPU injected into spp:           10000
          NetIO->NPU PROTO ARP:               2
           NetIO->CPU PKT LPTS:           10000
-------------------------------
socket/rx
                ether raw pkts:           10031
-------------------------------
socket/tx
                       ce pkts:           10002
-------------------------------
client/punt
              punted to client:           10007
-------------------------------

6. SPP op RP

RP/0/RP0/CPU0:fretta_1#show spp node-counters location 0/rP0/CPU0 
Thu Apr 20 21:06:33.045 UTC
socket/rx
                ether raw pkts:           10002
           mgmt interface pkts:           16651
-------------------------------
socket/tx
                       ce pkts:           10000
           mgmt interface pkts:              14
-------------------------------
fretta/classify
      forwarded to spp clients:           26651
 forwarded CPU packet to NetIO:           10000
forwarded Mgmt packet to NetIO:           16651
      dropped in classify node:               2
-------------------------------
client/inject
        pkts injected into spp:           10014
  NetIO->NPU injected into spp:           10000
     MGMT_IF injected into spp:              14
NetIO->NPU PROTO IPV4_PREROUTE:           10000
-------------------------------
client/punt
              punted to client:           26651
-------------------------------

7. Netio op RP.

RP/0/RP0/CPU0:fretta_1#show netio clients location 0/RP0/CPU0
Thu Apr 20 21:05:05.977 UTC

Counters                  Errors/Total  
----------------------------------------
Output                        0/10031   
Input                         0/25872   
Puntback                      0/0       
Jump                          0/0       
Driver Output                 0/10014   

Mutex Bypass Counters        Total      
----------------------------------------
Egress handled               0           
Egress chainwalked           10018       
Egress dropped               0           
Ingress handled              10000       
Ingress chainwalked          0           
Ingress dropped              0           

XIPC queues              Dropped/Queued    Cur/High/Max 
------------------------------------------------------------
OutputL                       0/10004         0/1/6000  
OutputH                       0/14            0/1/3000  
Puntback                      0/0             0/0/6000  
PMutex_egressL                0/10004         0/1/6000  
PMutex_egressH                0/14            0/1/1500  
PMutex_ingressL               0/0             0/0/6000  
PMutex_ingressH               0/0             0/0/1500  

                   Input              Punt         XIPC InputQ      XIPC PuntQ  
ClientID         Drop/Total        Drop/Total      Cur/High/Max    Cur/High/Max 
--------------------------------------------------------------------------------
ipv6_icmp           0/0               0/0             0/0/1000        0/0/1000  
icmp                0/10000           0/0             0/1/1000        0/0/1000  
clns              L 0/0               0/0           L 0/0/1000        0/0/0     
                  H 0/0                             H 0/0/1000                  
eth_mgmt            0/0               0/0        
ipv6_io             0/0               0/4             0/0/1000        0/1/1000  
ipv6_nd             0/4               0/0             0/1/1500        0/0/1000  
l2snoop             0/0               0/0             0/0/1000        0/0/0     
ether_sock          0/0               0/0        
icmpv6_unreach_jump        0/0               0/0        
raw               L 0/0               0/0           L 0/0/1600        0/0/0     
                  H 0/0                             H 0/0/1600                  
tcp               L 0/0               0/0           L 0/0/1600        0/0/0     
                  H 0/0                             H 0/0/1600                  
udp               L 0/307             0/0           L 0/1/1600        0/0/0     
                  H 0/0                             H 0/0/1600                  
arp                 0/15565           0/0             0/4/1000        0/0/1000  
mpls_io             0/0               0/0             0/0/1000        0/0/1000  
lspv_server         0/0               0/0        
ipv4                0/0               0/0             0/0/1000        0/0/1000  
ipv6                0/0               0/0             0/0/1000        0/0/1000  

Key:
  L = queue for lower priority packets
  H = queue for higher priority packets

8. IP-O

RP/0/RP0/CPU0:fretta_1#

RP/0/RP0/CPU0:fretta_1#show ipv4 traffic brief

  Rcvd: 0 admin unreachable, 0 network unreachable
        0 host unreachable, 0 protocol unreachable
        0 port unreachable, 0 fragment unreachable
        0 time to live exceeded, 0 reassembly ttl exceeded
        0 echo request, 10000 echo reply
        0 mask request, 0 mask reply
        0 redirect, 0 parameter error
        0 source quench, 0 timestamp, 0 timestamp reply
        0 router advertisement, 0 router solicitation
        10000 total, 0 checksum errors, 0 unknown

9. Interfacestatistieken:

RP/0/RP0/CPU0:fretta_1# show int gigabitEthernet 0/0/0/16
Thu Apr 20 21:22:12.822 UTC
GigabitEthernet0/0/0/16 is up, line protocol is up 
  Interface state transitions: 1
  Hardware is GigabitEthernet, address is 008a.964b.7040 (bia 008a.964b.7040)
  Internet address is 1.1.16.1/24
  MTU 1514 bytes, BW 1000000 Kbit (Max: 1000000 Kbit)
     reliability 255/255, txload 0/255, rxload 0/255
  Encapsulation ARPA,
  Full-duplex, 1000Mb/s, link type is force-up
  output flow control is off, input flow control is off
  Carrier delay (up) is 10 msec
  loopback not set,
  Last link flapped 01:01:11
  ARP type ARPA, ARP timeout 04:00:00
  Last input 00:58:03, output 00:58:03
  Last clearing of "show interface" counters never
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     10004 packets input, 1140270 bytes, 0 total input drops
     3 drops for unrecognized upper-level protocol
     Received 1 broadcast packets, 3 multicast packets
              0 runts, 0 giants, 0 throttles, 0 parity
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     10004 packets output, 1140270 bytes, 0 total output drops
     Output 1 broadcast packets, 3 multicast packets
     0 output errors, 0 underruns, 0 applique, 0 resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions


RP/0/RP0/CPU0:fretta_1#

Lokale ping

<TBD>

Revisiegeschiedenis

Revisie	Publicatiedatum	Opmerkingen
1.0	01-Aug-2021	Eerste vrijgave

Bijdrage van

Santosh Sharma
Cisco Engineering

NCS 5500: Leven van een pakket (douanevervoer, punt/inspuiting, Ping Path)

Downloadopties

Inclusief taalgebruik

Over deze vertaling

Inhoud

Inleiding

Leven van een pakket in doorsturen van ASIC

ASIC voor doorsturen van leidingen

IRPP (Poortbepaling, parser)

Punt

Pad tussen twee CPU-knooppunten

Pad van NPU naar RP

Injecteren van RP naar NPU of LC CPU

Pad van LC CPU naar NPU injecteren

CLI voor Punt/Injecteer Debugging

Afstandsbediening

Pad: Echo-aanvraag

Pad: Echo-antwoord

Lokale ping

Pad: Echo-aanvraag

Pad: Echo-antwoord

Handige debugs:

Topologie

Opdrachten om afstandsbediening te controleren

Echo-aanvraag: Lokale RP: TX

Echo-aanvraag: Remote LC: RX

Echo-antwoord: Remote-knooppunt (LC): TX

Echo-antwoord: Lokaal knooppunt (LC): RX

Lokale ping

Revisiegeschiedenis

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