NCS5500: Vida útil de um pacote (Trânsito, Punt/Injeção, Caminho do ping)

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Atualizado:1 de agosto de 2021

ID do documento:217276

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Introdução

Este documento descreve o caminho percorrido pelos pacotes ICMP echo request/Echo Reply dentro da caixa NCS55xx(Fretta).

Vida de um pacote no ASIC de encaminhamento

IRPP

Um pacote é recebido em uma interface e passado para o RIP, onde os primeiros 128 bytes serão extraídos e processados. Como resultado, o cabeçalho interno do sistema é colocado no início.

ITM

O pacote é armazenado na DRAM/OCB

ITPP

Se necessário, regravar o cabeçalho do sistema (replicação multicast, espelhamento de porta, etc.)

Os pacotes são divididos em células e carregados de forma balanceada na estrutura

ERPP

As células são recebidas e remontadas. Os primeiros 128 bytes são extraídos e aplicam todos os filtros da camada de enlace, ACL de saída, Replicação de saída (Multicast)

ETPP/ETM

O pacote inteiro é armazenado em um buffer até que o pacote de saída seja agendado. Os cabeçalhos do sistema são removidos.

ASIC de encaminhamento de pipeline

IRPP (Port Term, Parser)

Terminação de porta: Pacotes recebidos da interface de rede/CPU/recirculação

Determine a porta de origem e marque o pacote com ela.
Decida o programa inicial a ser usado no Analisador.
Identifique onde começa o cabeçalho da rede.

Analisador: Extraia Ethertype, Endereços MAC, Determine o deslocamento para os próximos estágios no pipeline.

IRPP (Camada de linha, VLAN Trans.)

Camada de Link: Filtragem na autenticação de endereço de origem e L2.

Conversão de VLAN: Mapeamos a interface lógica do pacote.

Caminho de punt

Somente algumas entradas de TCAM LPTS estão disponíveis na NPU devido à falta de recursos de TCAM.
A pesquisa principal de LPTS é feita no SW LPTS Pre-IFIB no LC Netio
Pacote punt LPTS de NPU para RP diretamente via consulta de TCAM PMF:
- Os pacotes OSPF, OSPFv3 mcast, ISIS são direcionados diretamente para o RP ativo e em standby
Pacote punt LPTS de NPU para CPU local via consulta de TCAM PMF:
- Qualquer protocolo que use TCP, UDP; ICMP, ND
Os pacotes de protocolo L2 são encaminhados para a LC por armadilha de CPU BRCM:
- ARP, RARP, CDP, LACP, LLDP, OAM Ether-link, MACSec
Os pacotes de exceção são encaminhados para a LC por armadilha de CPU BRCM.
- TTL0, TTL1, MTU Exceed, pacotes de opção

Caminho de punt entre dois nós de CPU

Caminho de punt de NPU para RP CPU

Os pacotes RX Forus são replicados no NPU. Um é enviado para o RP ativo e outro para o RP em standby

Injetar da CPU do RP para a NPU ou a CPU da LC

Os pacotes L3 são injetados diretamente na NPU se a adjacência de prefixo estiver completa ou se for um pacote pré-rota

Os pacotes L3 são injetados na CPU da LC no caso:

A adjacência do prefixo é GLEAN.
pacote de pré-rota MPLS
O tamanho do pacote excede a MTU.

Injetar caminho da CPU da LC para a NPU

Esses pacotes são injetados da CPU da LC para a NPU:

ARP, ND, Resposta de Eco ICMP, Pacotes Fragmentados
Pacotes CDP, LACP, LLDP, Ether-link OAM

CLI para Depuração Punt/Inject

Show SPP node counters location <>

show netio chain <interface> 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 <npu> "diag counters g cdsp" location <>

show interface <> location <>

Ping remoto

Caminho do pacote: Solicitação de Eco

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)]

Caminho do pacote: Resposta de Eco

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)]

Ping Local

Caminho do pacote: Solicitação de Eco

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

Caminho do pacote: Resposta de Eco

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

Debugs úteis:

debug icmp ipv4 location 0/0/CPU0

debug ipv4 packet location 0/0/CPU0

debug ipv4 ping events location 0/0/CPU0

Topologia

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

Comandos para verificar o ping remoto

Solicitação de Eco: RP local: TX

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

1. E/S IP: Verifique se a Solicitação de Eco foi gerada:

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. Verifique se a Solicitação de Eco foi enviada por cabo:

 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

Solicitação de Eco: LC remoto: RX

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

1. Verifique se o pacote é recebido do fio:

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. Verifique o contador LPTS.

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. Netio

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. Estatísticas 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 
RP/0/RP0/CPU0:fretta_2#

6. IOS IP

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

Resposta de Eco: Nó remoto(LC): TX

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

1. E/S IP

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. Netio

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. Estatísticas da DQA

 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. Verifique se o pacote é enviado para cabeamento.

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. Estatísticas da interface

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

Resposta de Eco: Nó local(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. Verifique se os pacotes estão vindo do fio.

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. Contadores LPTS

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 no 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. Netio sobre 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. Estatísticas de FWD no 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 no LC para enviar ao SPP no 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 no PR

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 sobre PR.

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. E/S IP

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. Estatísticas da interface:

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#

Ping Local

<a ser definido>

Histórico de revisões

Revisão	Data de publicação	Comentários
1.0	01-Aug-2021	Versão inicial

Colaboração de

Santosh Sharma
Engenharia da Cisco

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Network Convergence System 5500 Series

NCS5500: Vida útil de um pacote (Trânsito, Punt/Injeção, Caminho do ping)

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Linguagem imparcial

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Contents

Introdução

Vida de um pacote no ASIC de encaminhamento

ASIC de encaminhamento de pipeline

IRPP (Port Term, Parser)

Caminho de punt

Caminho de punt entre dois nós de CPU

Caminho de punt de NPU para RP CPU

Injetar da CPU do RP para a NPU ou a CPU da LC

Injetar caminho da CPU da LC para a NPU

CLI para Depuração Punt/Inject

Ping remoto

Caminho do pacote: Solicitação de Eco

Caminho do pacote: Resposta de Eco

Ping Local

Caminho do pacote: Solicitação de Eco

Caminho do pacote: Resposta de Eco

Debugs úteis:

Topologia

Comandos para verificar o ping remoto

Solicitação de Eco: RP local: TX

Solicitação de Eco: LC remoto: RX

Resposta de Eco: Nó remoto(LC): TX

Resposta de Eco: Nó local(LC): RX

Ping Local

Histórico de revisões

Colaboração de

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