Configureren en probleemoplossing bij multicast-serviceresultaten op Catalyst 8000
Inleiding
Dit document beschrijft het proces om de functie Multicast-servicereflectie op Catalyst 8000 op te lossen.
Voorwaarden
Vereisten
Cisco raadt kennis van de volgende onderwerpen aan:
- Kennis van basismulticast routing
- Kennis van Cisco IOS® XE-opdrachtregel
Gebruikte componenten
De informatie in dit document is gebaseerd op de volgende software- en hardware-versies:
- Catalyst 8500 routermodule
- Cisco IOS XE 17.9.4
De informatie in dit document is gebaseerd op de apparaten in een specifieke laboratoriumomgeving. Alle apparaten die in dit document worden beschreven, hadden een opgeschoonde (standaard)configuratie. Als uw netwerk live is, moet u zorgen dat u de potentiële impact van elke opdracht begrijpt.
Achtergrondinformatie
Het doel van dit document is de basisconfiguratie en -probleemoplossing van de functie Multicast-servicereflectie aan te tonen om een Multicast-to-Multicast doelvertaalscenario met een Cisco Catalyst 8000 te valideren.
Multicast Service Reflection is een veelzijdige functie die op verschillende punten in een netwerk kan worden geïmplementeerd om aan specifieke multicast-vereisten te voldoen. Het helpt de efficiëntie en betrouwbaarheid van multicast-services te verbeteren in complexe netwerkomgevingen omdat het gebruikers in staat stelt ontvangen multicast- of unicastdoeladressen te vertalen naar multicast- of unicastadressen die in overeenstemming zijn met hun interne adresseringsbeleid.
Multicast-servicereslectie heeft de mogelijkheid om zowel bron en doeladressen in de IPv4-header. Het identificeert de multicast verkeersstromen (gekoppeld aan specifieke multicast groepen en bronnen) die moeten worden vertaald (gebaseerd op de vooraf gedefinieerde configuratie) en wanneer het verkeer het reflectiepunt bereikt, weerspiegelt de router die de vertaling uitvoert deze pakketten selectief.
Een van de belangrijkste onderdelen van deze functie is de Virtual Interface (Vif). Deze Vif interface is een logische interface die zich statisch bij de groep kan aansluiten die moet worden weerspiegeld in om de multicast boom te bouwen. Met andere woorden, deze Vif interface fungeert als multicast ontvanger voor de oorspronkelijke stroom en zodra het verkeer naar de Vif-interface is doorgestuurd, worden de pakketten weergegeven en worden de bron-/doeladressen vertaald naar de nieuwe gewenste IPv4-adressen.
Opmerking: om deze functie te implementeren moet uw router ten minste een netwerkvoordeel licentie geïnstalleerd hebben, anders kan een fout worden gezien bij het configureren van de Vif interface.
Topologie
Topologiediagram
Configuratie
Om de functie in deze setup te configureren moet multicast routing zijn ingeschakeld over het pad en is ook een eenvoudige IPv4-connectiviteit tussen de multicast-bron en de ontvanger vereist. In dit geval is er een Catalyst 9K switch (C9000) die fungeert als First Hop Router (FHR), vervolgens de Catalyst 8K router (C8000) die de Multicast Service Reflector is en ook het Rendezvous Point (RP) voor de verschillende multicast groepen en een ASR1K router (ASR1000) is de Last Hop Router (LHR) waar de ontvanger is aangesloten. In dit voorbeeld wordt het external border gateway protocol (eBGP) gebruikt om deze apparaten onderling te verbinden, maar er is geen vereiste om een bepaald routing protocol te implementeren.
Opmerking: in dit voorbeeld wordt slechts één RP gebruikt voor de verschillende multicast stromen. Voor meer informatie over scenario's waarin verschillende RP's worden gebruikt voor de multicast domeinen, raadpleegt u de sectie Configuratievoorbeelden voor multicast servicereslectie uit de IP Multicast Configuration Guide, Cisco IOS XE 17.x
FE (C9000)
Om de configuratie op de FHR te starten, dient u multicast routing in te schakelen, het IPv4-adres van de RP toe te voegen en Protocol Independent Multicast Sparse Mode (PIM-SM) te configureren op interfaces die zijn aangesloten op de Multicast-bron en op de Multicast Service Reflector-router (C800).
C9000#show run | i multicast|rp-address ip multicast-routing class-map match-any system-cpp-police-multicast-end-station class-map match-any system-cpp-police-multicast ip pim rp-address 10.100.100.1
C9000#show run interface Ten 1/0/6 Building configuration... Current configuration : 116 bytes ! interface TenGigabitEthernet1/0/6 no switchport ip address 192.168.0.1 255.255.255.252 ip pim sparse-mode end C9000#show run interface Ten 1/0/3 Building configuration... Current configuration : 116 bytes ! interface TenGigabitEthernet1/0/3 no switchport ip address 192.168.0.5 255.255.255.252 ip pim sparse-mode endDe C9000 switch doet een eBGP-nabijheid met de C800-router om de aangesloten routes te adverteren.
C9000#show run | section router bgp
router bgp 65003
bgp log-neighbor-changes
redistribute connected
neighbor 192.168.0.6 remote-as 65001Multicast-serviceflectorrouter (C800)
Bij de Catalyst 8K router, voor de eerste configuratie toelaten multicast routing, voeg het juiste IPv4-adres toe en vorm ook PIM-SM op de interfaces die zijn aangesloten op C9000- en ASR1000-apparaten en op de Loopback0-interface.
Mcast_SR#show run | i multicast|rp-address ip multicast-routing distributed ip pim rp-address 10.100.100.1
Mcast_SR#show run interface Ten 0/0/2 Building configuration... Current configuration : 156 bytes ! interface TenGigabitEthernet0/0/2 description to C9000 ip address 192.168.0.6 255.255.255.252 ip pim sparse-mode no negotiation auto cdp enable end Mcast_SR#show run interface Ten 0/0/5 Building configuration... Current configuration : 157 bytes ! interface TenGigabitEthernet0/0/5 description to ASR1000 ip address 172.16.0.1 255.255.255.252 ip pim sparse-mode no negotiation auto cdp enable endMcast_SR#show run interface loopback 0 Building configuration... Current configuration : 88 bytes ! interface Loopback0 ip address 10.100.100.1 255.255.255.255 ip pim sparse-mode end
Deze router heeft twee eBGP-buren, 192.168.0.5 buur is de C9000 switch die de prefixes verstuurt om de Multicast Source te bereiken en de tweede buur is de ASR1000 router die wordt gebruikt om de ontvanger te bereiken. Bericht dat deze router zijn lokale Loopback0 adverteert en ook het Subnet van Vif adverteert.
Mcast_SR#show run | section router bgp router bgp 65001 bgp log-neighbor-changes network 10.100.100.1 mask 255.255.255.255 network 172.16.101.0 mask 255.255.255.252 neighbor 172.16.0.2 remote-as 65002 neighbor 192.168.0.5 remote-as 65003
Nu is het tijd om de Vif interface te configureren, die helpt om de multicast groep van 239.5.5.5 tot 239.55.55.5 te vertalen. Deze logische interface moet een IP-adres hebben en dit subnet moet routeerbaar zijn, daarnaast moet PIM-SM worden geconfigureerd. Om de Multicast Service Reflection-functie in te schakelen, reflecteert de opdrachtinformatie van de <interface_id>-bestemming <destation_ip1> naar <destroom_ip2>-maskerlens <subnetmasker_length>-bron <source_ip> wordt gebruikt, waarbij de interface_id de interface is die het oorspronkelijke multicast-verkeer ontvangt, de bestemming_ip1 het oorspronkelijke IPv4-adres is dat moet worden vertaald (239.5.5) en bestemming_ip2 het nieuwe IPv4-adres is dat wordt verwacht na de vertaling (255) 55,55). Last but not least, is de opdracht ip igmp statisch-groep <groep-adres> vereist om van deze interface een statisch verbonden lid van de oorspronkelijke multicast groep te maken.
Mcast_SR#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Mcast_SR(config)#interface Vif1
Mcast_SR(config-if)#ip address 172.16.101.1 255.255.255.252
Mcast_SR(config-if)#ip pim sparse-mode
Mcast_SR(config-if)#ip service reflect TenGigabitEthernet0/0/2 destination 239.5.5.5 to 239.55.55.55 mask-len 32 source 172.16.101.2
Mcast_SR(config-if)#ip igmp static-group 239.5.5.5
Mcast_SR(config-if)#endOpmerking: interface "Vif1" is strikt geassocieerd met de standaard Virtual Route Forwarding (VRF) voor de Multicast Service Reflection-functie, als er een ander nummer voor deze interface is geselecteerd, kan er een bericht worden weergegeven in de console dat lijkt op "Alleen Vif1 kan worden gebruikt voor Service Reflect in global table".
De volgende output toont de interface van Vif nadat de configuratie is toegepast, merkt op dat de interfaceverrichting UP/UP wordt en de outputeigenschap de DIENST reflecteert met behulp van het bevel van de show ip interface <interface>:
Mcast_SR#show run interface Vif1 Building configuration... Current configuration : 229 bytes ! interface Vif1 ip address 172.16.101.1 255.255.255.252 ip pim sparse-mode ip service reflect TenGigabitEthernet0/0/2 destination 239.5.5.5 to 239.55.55.55 mask-len 32 source 172.16.101.2 ip igmp static-group 239.5.5.5 endMcast_SR#show ip interface vif1 Vif1 is up, line protocol is up Internet address is 172.16.101.1/30 Broadcast address is 255.255.255.255 Address determined by non-volatile memory MTU is 1514 bytes Helper address is not set Directed broadcast forwarding is disabled Multicast reserved groups joined: 224.0.0.1 224.0.0.2 224.0.0.22 224.0.0.13 Outgoing Common access list is not set Outgoing access list is not set Inbound Common access list is not set Inbound access list is not set Proxy ARP is enabled Local Proxy ARP is disabled Security level is default Split horizon is enabled ICMP redirects are always sent ICMP unreachables are always sent ICMP mask replies are never sent IP fast switching is enabled IP Flow switching is disabled IP CEF switching is enabled IP CEF switching turbo vector IP Null turbo vector Associated unicast routing topologies: Topology "base", operation state is UP Associated multicast routing topologies: Topology "base", operation state is UP IP multicast fast switching is enabled IP multicast distributed fast switching is disabled IP route-cache flags are Fast, CEF Router Discovery is disabled IP output packet accounting is disabled IP access violation accounting is disabled TCP/IP header compression is disabled RTP/IP header compression is disabled Probe proxy name replies are disabled Policy routing is disabled Network address translation is disabled BGP Policy Mapping is disabled Input features: MCI Check Output features: SERVICE REFLECT IPv4 WCCP Redirect outbound is disabled IPv4 WCCP Redirect inbound is disabled IPv4 WCCP Redirect exclude is disabled IP Clear Dont Fragment is disabled
LHR (ASR 1000)
Voor de configuratie op de LHR moet u op dezelfde manier multicast routing en PIM-SM op de interfaces die zijn aangesloten op de Multicast Service Reflector-router en op de ontvanger inschakelen en bovendien het IPv4-adres van de RP configureren:
ASR1000#show run | i multicast|rp-address ip multicast-routing distributed ip pim rp-address 10.100.100.1
ASR1000#show run interface Ten 0/1/1 Building configuration... Current configuration : 133 bytes ! interface TenGigabitEthernet0/1/1 ip address 172.16.0.2 255.255.255.252 ip pim sparse-mode no negotiation auto cdp enable end ASR1000#show run interface GigabitEthernet0/0/0 Building configuration... Current configuration : 127 bytes ! interface GigabitEthernet0/0/0 ip address 172.16.0.5 255.255.255.252 ip pim sparse-mode negotiation auto cdp enable end
Voor de IP-verbinding gebruikt deze router ook BGP om de aangesloten prefixes uit te wisselen:
ASR1000#show run | section router bgp
router bgp 65002
bgp log-neighbor-changes
redistribute connected
neighbor 172.16.0.1 remote-as 65001Eerste verificatie
Als een eerste verificatie kunt u de basisIP-connectiviteit, routeuitwisseling tussen apparaten en PIM-status gaan controleren. De volgende output werd genomen van Catalyst 9K en toont de routes die naar de ontvanger zijn geïnstalleerd (172.16.0.6), RP Loopback0 (10.100.100.1), en Vif (172.16.101.1). Ook kan worden gezien dat er een PIM-nabijheid is met de C8000 router en dat de RP-mapping ook naar het 10.100.100.1-adres wijst.
C9000#show ip route 172.16.0.6 Routing entry for 172.16.0.4/30 Known via "bgp 65003", distance 20, metric 0 Tag 65001, type external Last update from 192.168.0.6 2d22h ago Routing Descriptor Blocks: * 192.168.0.6, from 192.168.0.6, 2d22h ago opaque_ptr 0x7FD797D4BA18 Route metric is 0, traffic share count is 1 AS Hops 2 Route tag 65001 MPLS label: none C9000#ping 172.16.0.6 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.0.6, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms C9000#show ip route 10.100.100.1 Routing entry for 10.100.100.1/32 Known via "bgp 65003", distance 20, metric 0 Tag 65001, type external Last update from 192.168.0.6 2d22h ago Routing Descriptor Blocks: * 192.168.0.6, from 192.168.0.6, 2d22h ago opaque_ptr 0x7FD797D4B8D8 Route metric is 0, traffic share count is 1 AS Hops 1 Route tag 65001 MPLS label: none C9000#ping 10.100.100.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.100.100.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms C9000#show ip route 172.16.101.1 Routing entry for 172.16.101.0/30 Known via "bgp 65003", distance 20, metric 0 Tag 65001, type external Last update from 192.168.0.6 2d00h ago Routing Descriptor Blocks: * 192.168.0.6, from 192.168.0.6, 2d00h ago opaque_ptr 0x7FD797D4B8D8 Route metric is 0, traffic share count is 1 AS Hops 1 Route tag 65001 MPLS label: none C9000#ping 172.16.101.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.101.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms C9000#show ip pim neighbor PIM Neighbor Table Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority, P - Proxy Capable, S - State Refresh Capable, G - GenID Capable, L - DR Load-balancing Capable Neighbor Interface Uptime/Expires Ver DR Address Prio/Mode 192.168.0.6 TenGigabitEthernet1/0/3 2d22h/00:01:29 v2 1 / DR S P G C9000#show ip pim interface Address Interface Ver/ Nbr Query DR DR Mode Count Intvl Prior 192.168.0.5 TenGigabitEthernet1/0/3 v2/S 1 30 1 192.168.0.6 192.168.0.1 TenGigabitEthernet1/0/6 v2/S 0 30 1 192.168.0.1C9000#show ip pim rp mapping PIM Group-to-RP Mappings Group(s): 224.0.0.0/4, Static RP: 10.100.100.1 (?)
De Multicast Service Reflector toont zowel adressen 172.16.101.1 (Vif) en 10.100.100.1 (Loopback0) zoals direct verbonden, als routes naar bron en ontvanger die worden geleerd via BGP:
Mcast_SR#show ip route 10.100.100.1 Routing entry for 10.100.100.1/32 Known via "connected", distance 0, metric 0 (connected, via interface) Advertised by bgp 65001 Routing Descriptor Blocks: * directly connected, via Loopback0 Route metric is 0, traffic share count is 1
Mcast_SR#show ip route 172.16.101.1 Routing entry for 172.16.101.1/32 Known via "connected", distance 0, metric 0 (connected) Routing Descriptor Blocks: * directly connected, via Vif1 Route metric is 0, traffic share count is 1Mcast_SR#show ip route 172.16.0.6 Routing entry for 172.16.0.4/30 Known via "bgp 65001", distance 20, metric 0 Tag 65002, type external Last update from 172.16.0.2 5d20h ago Routing Descriptor Blocks: * 172.16.0.2, from 172.16.0.2, 5d20h ago opaque_ptr 0x7F841CBD53D0 Route metric is 0, traffic share count is 1 AS Hops 1 Route tag 65002 MPLS label: none
Mcast_SR#show ip route 192.168.0.2 Routing entry for 192.168.0.0/30 Known via "bgp 65001", distance 20, metric 0 Tag 65003, type external Last update from 192.168.0.5 5d20h ago Routing Descriptor Blocks: * 192.168.0.5, from 192.168.0.5, 5d20h ago opaque_ptr 0x7F841CBD5290 Route metric is 0, traffic share count is 1 AS Hops 1 Route tag 65003 MPLS label: none
De router C8000 toont ook twee buren PIM met vier interfaces die met PIM-SM (met inbegrip van Vif en Loopback0) worden toegelaten, wordt de correcte afbeelding van RP ook getoond en met het gebruik van bevel toon ip multicast kunt u de Multicast mogelijkheden van de Reflect van de Dienst van het apparaat verifiëren:
Mcast_SR#show ip pim neighbor PIM Neighbor Table Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority, P - Proxy Capable, S - State Refresh Capable, G - GenID Capable, L - DR Load-balancing Capable Neighbor Interface Uptime/Expires Ver DR Address Prio/Mode 192.168.0.5 TenGigabitEthernet0/0/2 5d20h/00:01:34 v2 1 / S P G 172.16.0.2 TenGigabitEthernet0/0/5 5d20h/00:01:15 v2 1 / DR S P G Mcast_SR#show ip pim interface Address Interface Ver/ Nbr Query DR DR Mode Count Intvl Prior 10.100.100.1 Loopback0 v2/S 0 30 1 10.100.100.1 192.168.0.6 TenGigabitEthernet0/0/2 v2/S 1 30 1 192.168.0.6 172.16.0.1 TenGigabitEthernet0/0/5 v2/S 1 30 1 172.16.0.2 172.16.101.1 Vif1 v2/S 0 30 1 0.0.0.0 Mcast_SR#show ip pim rp mapping PIM Group-to-RP Mappings Group(s): 224.0.0.0/4, Static RP: 10.100.100.1 (?)Mcast_SR#show ip multicast Multicast Routing: enabled Multicast Multipath: disabled Multicast Route limit: No limit Multicast Fallback group mode: Sparse Number of multicast boundaries configured with filter-autorp option: 0 MoFRR: Disabled Multicast Service-Reflect Capabilities: Multicast to Multicast Unicast to Multicast Multicast to Unicast
Bij de LHR zijn vergelijkbare verificaties afgerond. De volgende output die van de ASR1000 router wordt genomen toont de routes die voor de vertaalde Multicastbron 172.16.101.2 worden geïnstalleerd (dit is belangrijk om op te merken aangezien op dit punt het multicaststroompakket met een nieuwe bron en bestemmingsIPv4 kopbal) en voor het IPv4 adres 10.100.100.1 van de RP worden ontvangen. Het bericht dat LHR ook bereikbaarheid aan de originele Multicastbron 192.168.0.2 heeft, echter op dit punt in de topologie is belangrijker om bereikbaarheid aan Subnet van Vif te hebben (172.16.101.0/30):
ASR1000#show ip route 10.100.100.1 Routing entry for 10.100.100.1/32 Known via "bgp 65002", distance 20, metric 0 Tag 65001, type external Last update from 172.16.0.1 2d22h ago Routing Descriptor Blocks: * 172.16.0.1, from 172.16.0.1, 2d22h ago opaque_ptr 0x7F2BFA855B80 Route metric is 0, traffic share count is 1 AS Hops 1 Route tag 65001 MPLS label: none ASR1000#ping 10.100.100.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.100.100.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms ASR1000#show ip route 172.16.101.1 Routing entry for 172.16.101.0/30 Known via "bgp 65002", distance 20, metric 0 Tag 65001, type external Last update from 172.16.0.1 2d00h ago Routing Descriptor Blocks: * 172.16.0.1, from 172.16.0.1, 2d00h ago opaque_ptr 0x7F2BFA855B80 Route metric is 0, traffic share count is 1 AS Hops 1 Route tag 65001 MPLS label: none ASR1000#ping 172.16.101.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.101.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms ASR1000#show ip pim neighbor PIM Neighbor Table Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority, P - Proxy Capable, S - State Refresh Capable, G - GenID Capable, L - DR Load-balancing Capable Neighbor Interface Uptime/Expires Ver DR Address Prio/Mode 172.16.0.1 TenGigabitEthernet0/1/1 2d22h/00:01:24 v2 1 / S P G ASR1000#show ip pim interface Address Interface Ver/ Nbr Query DR DR Mode Count Intvl Prior 172.16.0.5 GigabitEthernet0/0/0 v2/S 0 30 1 172.16.0.5 172.16.0.2 TenGigabitEthernet0/1/1 v2/S 1 30 1 172.16.0.2ASR1000#show ip route 192.168.0.2 Routing entry for 192.168.0.0/30 Known via "bgp 65002", distance 20, metric 0 Tag 65001, type external Last update from 172.16.0.1 5d21h ago Routing Descriptor Blocks: * 172.16.0.1, from 172.16.0.1, 5d21h ago opaque_ptr 0x7F2BFA855E00 Route metric is 0, traffic share count is 1 AS Hops 2 Route tag 65001 MPLS label: none ASR1000#ping 192.168.0.2 source 172.16.0.5 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds: Packet sent with a source address of 172.16.0.5 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
Probleemoplossing
Nadat de Multicastbron de stroom voor groep 239.5.5.5 begint te verzenden, en terwijl het inschakelen van debug ip pim op de verschillende apparaten over de topologie, kan worden bevestigd dat de FHR de Multicastbron 192.168.0.2 aan de RP registreert en de interface TenGigabit Ethernet1/0/3 aan de Uitgaande Interfacelijst (OIL) toevoegt.
C9000#
*Oct 16 16:23:01.817: PIM(0)[default]: Re-check RP 10.100.100.1 into the (*, 239.5.5.5) entry
*Oct 16 16:23:01.817: PIM(0)[default]: Building Triggered (*,G) Join / (S,G,RP-bit) Prune message for 239.5.5.5
*Oct 16 16:23:01.817: PIM(0)[default]: Adding register encap tunnel (Tunnel0) as forwarding interface of (192.168.0.2, 239.5.5.5).
*Oct 16 16:23:01.839: PIM(0)[default]: Received v2 Join/Prune on TenGigabitEthernet1/0/3 from 192.168.0.6, to us
*Oct 16 16:23:01.839: PIM(0)[default]: Join-list: (192.168.0.2/32, 239.5.5.5), S-bit set
*Oct 16 16:23:01.839: PIM(0)[default]: MIDB Add TenGigabitEthernet1/0/3/192.168.0.6 to (192.168.0.2, 239.5.5.5), Forward state, by PIM SG Join
*Oct 16 16:23:01.839: PIM(0)[default]: Join to 0.0.0.0 on TenGigabitEthernet1/0/6 for (192.168.0.2, 239.5.5.5), Ignored.
*Oct 16 16:23:03.869: PIM(0)[default]: Received v2 Join/Prune on TenGigabitEthernet1/0/3 from 192.168.0.6, to us
*Oct 16 16:23:03.869: PIM(0)[default]: Join-list: (192.168.0.2/32, 239.5.5.5), S-bit set
*Oct 16 16:23:03.869: PIM(0)[default]: MIDB Update TenGigabitEthernet1/0/3/192.168.0.6 to (192.168.0.2, 239.5.5.5), Forward state, by PIM SG Join
*Oct 16 16:23:05.818: PIM(0)[default]: Received v2 Register-Stop on TenGigabitEthernet1/0/3 from 10.100.100.1 *Oct 16 16:23:05.818: PIM(0)[default]: for source 192.168.0.2, group 239.5.5.5
*Oct 16 16:23:05.818: PIM(0)[default]: Removing register encap tunnel (Tunnel0) as forwarding interface of (192.168.0.2, 239.5.5.5).
*Oct 16 16:23:05.818: PIM(0)[default]: Clear Registering flag to 10.100.100.1 for (192.168.0.2/32, 239.5.5.5)
*Oct 16 16:23:11.997: PIM(0)[default]: Send v2 join/prune to 192.168.0.6 (TenGigabitEthernet1/0/3)
C9000#show ip mroute 239.5.5.5 IP Multicast Routing Table Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected, L - Local, P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet, X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement, U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel, z - MDT-data group sender, Y - Joined MDT-data group, y - Sending to MDT-data group, G - Received BGP C-Mroute, g - Sent BGP C-Mroute, N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed, Q - Received BGP S-A Route, q - Sent BGP S-A Route, V - RD & Vector, v - Vector, p - PIM Joins on route, x - VxLAN group, c - PFP-SA cache created entry, * - determined by Assert, # - iif-starg configured on rpf intf, e - encap-helper tunnel flag, l - LISP decap ref count contributor Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join t - LISP transit group Timers: Uptime/Expires Interface state: Interface, Next-Hop or VCD, State/Mode (*, 239.5.5.5), 00:24:22/stopped, RP 10.100.100.1, flags: SPF Incoming interface: TenGigabitEthernet1/0/3, RPF nbr 192.168.0.6 Outgoing interface list: Null (192.168.0.2, 239.5.5.5), 00:24:22/00:03:11, flags: FT Incoming interface: TenGigabitEthernet1/0/6, RPF nbr 0.0.0.0 Outgoing interface list: TenGigabitEthernet1/0/3, Forward/Sparse, 00:24:22/00:02:47, flags: Tegelijkertijd ontvangt de Multicast Service Reflector router (dat ook de RP voor beide groepen is) de registratie voor de S,G (192.168.0.2, 239.5.5.5) en detecteert onmiddellijk dat deze groep valt onder de eerder gedefinieerde reflectieregel. Het voegt vervolgens de TenGigabit Ethernet0/0/2 toe als de inkomende interface voor de 239.5.5.5 stroom, en registreert later de nieuwe S,G (172.16.101.2, 239.55.55.55) aan zichzelf. De router voegt Vif1 als inkomende interface voor de 239.55.55.55 stroom toe en plaatst TenGigabit Ethernet0/0/5 (die met ASR1000 verbinden) in de OLIE zoals getoond in debug en de output van het showip routebevel:
Mcast_SR#
*Oct 16 15:46:11.758: PIM(0)[default]: Received v2 Register on TenGigabitEthernet0/0/2 from 192.168.0.5 *Oct 16 15:46:11.758: for 192.168.0.2, group 239.5.5.5
*Oct 16 15:46:11.758: PIM(0)[default]: Adding register decap tunnel (Tunnel1) as accepting interface of (192.168.0.2, 239.5.5.5). *Oct 16 15:46:11.758: MSR(0)[default]: Add 239.5.5.5 to all the SR rules *Oct 16 15:46:11.758: MSR: Found Grp idx 553648130 for rule 239.5.5.5->239.55.55.55 *Oct 16 15:46:11.758: MSR: Found Grp idx 553648130 for rule 239.5.5.5->239.55.55.55
*Oct 16 15:46:11.758: PIM(0)[default]: Insert (192.168.0.2,239.5.5.5) join in nbr 192.168.0.5's queue
*Oct 16 15:46:11.758: PIM(0)[default]: Building Join/Prune packet for nbr 192.168.0.5
*Oct 16 15:46:11.758: PIM(0)[default]: Adding v2 (192.168.0.2/32, 239.5.5.5), S-bit Join
*Oct 16 15:46:11.758: PIM(0)[default]: Send v2 join/prune to 192.168.0.5 (TenGigabitEthernet0/0/2)
*Oct 16 15:46:12.929: PIM(0)[default]: Building Periodic (*,G) Join / (S,G,RP-bit) Prune message for 239.55.55.55
*Oct 16 15:46:12.929: PIM(0)[default]: rp our address for group 239.55.55.55
*Oct 16 15:46:13.251: PIM(0)[default]: Received v2 Join/Prune on TenGigabitEthernet0/0/5 from 172.16.0.2, to us
*Oct 16 15:46:13.251: PIM(0)[default]: Join-list: (*, 239.55.55.55), RPT-bit set, WC-bit set, S-bit set
*Oct 16 15:46:13.252: PIM(0)[default]: MIDB Update TenGigabitEthernet0/0/5/172.16.0.2 to (*, 239.55.55.55), Forward state, by PIM *G Join
*Oct 16 15:46:13.732: PIM(0)[default]: Received v2 Register on TenGigabitEthernet0/0/2 from 192.168.0.5
*Oct 16 15:46:13.732: for 192.168.0.2, group 239.5.5.5
*Oct 16 15:46:13.732: PIM(0)[default]: Removing register decap tunnel (Tunnel1) as accepting interface of (192.168.0.2, 239.5.5.5).
*Oct 16 15:46:13.732: PIM(0)[default]: Installing TenGigabitEthernet0/0/2 as accepting interface for (192.168.0.2, 239.5.5.5).
*Oct 16 15:46:13.732: PIM(0)[default]: Prune to 0.0.0.0 on for (192.168.0.2, 239.5.5.5), Ignored.
*Oct 16 15:46:13.773: PIM(0)[default]: Adding register decap tunnel (Tunnel1) as accepting interface of (172.16.101.2, 239.55.55.55). *Oct 16 15:46:13.773: PIM(0)[default]: Adding register encap tunnel (Tunnel0) as forwarding interface of (172.16.101.2, 239.55.55.55).
*Oct 16 15:46:13.773: PIM(0)[default]: Removing register decap tunnel (Tunnel1) as accepting interface of (172.16.101.2, 239.55.55.55).
*Oct 16 15:46:13.773: PIM(0)[default]: Installing Vif1 as accepting interface for (172.16.101.2, 239.55.55.55).
*Oct 16 15:46:13.788: PIM(0)[default]: Insert (192.168.0.2,239.5.5.5) join in nbr 192.168.0.5's queue
*Oct 16 15:46:13.788: PIM(0)[default]: Building Join/Prune packet for nbr 192.168.0.5
*Oct 16 15:46:13.788: PIM(0)[default]: Adding v2 (192.168.0.2/32, 239.5.5.5), S-bit Join
*Oct 16 15:46:13.788: PIM(0)[default]: Send v2 join/prune to 192.168.0.5 (TenGigabitEthernet0/0/2)
*Oct 16 15:46:13.794: PIM(0)[default]: Received v2 Register on Vif1 from 10.100.100.1
*Oct 16 15:46:13.794: for 172.16.101.2, group 239.55.55.55
*Oct 16 15:46:13.794: PIM(0)[default]: Send v2 Register-Stop to 10.100.100.1 for 172.16.101.2, group 239.55.55.55
*Oct 16 15:46:13.794: PIM(0)[default]: Received v2 Register-Stop on Loopback0 from 10.100.100.1
*Oct 16 15:46:13.794: PIM(0)[default]: for source 172.16.101.2, group 239.55.55.55
*Oct 16 15:46:13.794: PIM(0)[default]: Removing register encap tunnel (Tunnel0) as forwarding interface of (172.16.101.2, 239.55.55.55).
*Oct 16 15:46:13.794: PIM(0)[default]: Clear Registering flag to 10.100.100.1 for (172.16.101.2/32, 239.55.55.55)
*Oct 16 15:46:13.809: PIM(0)[default]: Received v2 Join/Prune on TenGigabitEthernet0/0/5 from 172.16.0.2, to us
*Oct 16 15:46:13.809: PIM(0)[default]: Join-list: (172.16.101.2/32, 239.55.55.55), S-bit set
*Oct 16 15:46:13.809: PIM(0)[default]: MIDB Update TenGigabitEthernet0/0/5/172.16.0.2 to (172.16.101.2, 239.55.55.55), Forward state, by PIM SG Join
Mcast_SR#show ip mroute IP Multicast Routing Table Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected, L - Local, P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet, X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement, U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel, z - MDT-data group sender, Y - Joined MDT-data group, y - Sending to MDT-data group, G - Received BGP C-Mroute, g - Sent BGP C-Mroute, N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed, Q - Received BGP S-A Route, q - Sent BGP S-A Route, V - RD & Vector, v - Vector, p - PIM Joins on route, x - VxLAN group, c - PFP-SA cache created entry, * - determined by Assert, # - iif-starg configured on rpf intf, e - encap-helper tunnel flag, l - LISP decap ref count contributor Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join t - LISP transit group Timers: Uptime/Expires Interface state: Interface, Next-Hop or VCD, State/Mode (*, 239.5.5.5), 00:50:36/stopped, RP 10.100.100.1, flags: SJC Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: Vif1, Forward/Sparse, 00:50:36/00:00:23, flags: (192.168.0.2, 239.5.5.5), 00:10:08/00:02:36, flags: T Incoming interface: TenGigabitEthernet0/0/2, RPF nbr 192.168.0.5 Outgoing interface list: Vif1, Forward/Sparse, 00:10:08/00:01:51, flags: (*, 239.55.55.55), 00:50:21/00:03:11, RP 10.100.100.1, flags: SF Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: TenGigabitEthernet0/0/5, Forward/Sparse, 00:50:21/00:03:11, flags: (172.16.101.2, 239.55.55.55), 00:10:06/00:03:23, flags: FT Incoming interface: Vif1, RPF nbr 0.0.0.0 Outgoing interface list: TenGigabitEthernet0/0/5, Forward/Sparse, 00:10:06/00:03:16, flags: (*, 224.0.1.40), 00:50:36/00:03:28, RP 10.100.100.1, flags: SJCL Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: TenGigabitEthernet0/0/2, Forward/Sparse, 00:50:13/00:03:28, flags: TenGigabitEthernet0/0/5, Forward/Sparse, 00:50:28/00:03:10, flags: Loopback0, Forward/Sparse, 00:50:36/00:02:17, flags: Opmerking: om de regels voor multicast-servicereflectie te kunnen naleven die in de debug-uitvoer worden gebruikt, moet debug-ip multicast-service worden ingeschakeld. Houd er rekening mee dat deze specifieke debug is geïntroduceerd in Cisco IOS-XE release 17.9.1a. Voor extra informatie raadpleegt u de sectie Functiegegevens voor multicast-servicereflectie uit de IP Multicast Configuration Guide, Cisco IOS XE 17.x
Uit de vorige show ip route output kan worden gezien dat er *, G en S, G ingangen voor zowel de originele als nieuwe multicast groepen zijn. Bovendien kan het gebruik van de opdracht show ip route <group> count een idee geven van de pakketten die worden ontvangen en doorgestuurd voor elke multicast stream. Deze output is ook nuttig omdat het helpt om het verkeer door te sturen door bevestiging van de incrementerende tellers:
Mcast_SR#show ip mroute 239.5.5.5 count
Use "show ip mfib count" to get better response time for a large number of mroutes.
IP Multicast Statistics
5 routes using 5796 bytes of memory
3 groups, 0.66 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 239.5.5.5, Source count: 1, Packets forwarded: 4053, Packets received: 4056
RP-tree: Forwarding: 11/0/100/0, Other: 12/1/0
Source: 192.168.0.2/32, Forwarding: 4042/0/113/0, Other: 4044/2/0
Mcast_SR#show ip mroute 239.5.5.5 count
Use "show ip mfib count" to get better response time for a large number of mroutes.
IP Multicast Statistics
5 routes using 5796 bytes of memory
3 groups, 0.66 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 239.5.5.5, Source count: 1, Packets forwarded: 4058, Packets received: 4061
RP-tree: Forwarding: 11/0/100/0, Other: 12/1/0
Source: 192.168.0.2/32, Forwarding: 4047/0/113/0, Other: 4049/2/0
Mcast_SR#show ip mroute 239.55.55.55 count
Use "show ip mfib count" to get better response time for a large number of mroutes.
IP Multicast Statistics
5 routes using 5796 bytes of memory
3 groups, 0.66 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 239.55.55.55, Source count: 1, Packets forwarded: 4046, Packets received: 4046
RP-tree: Forwarding: 0/0/0/0, Other: 0/0/0
Source: 172.16.101.2/32, Forwarding: 4046/0/114/0, Other: 4046/0/0
Mcast_SR#show ip mroute 239.55.55.55 count
Use "show ip mfib count" to get better response time for a large number of mroutes.
IP Multicast Statistics
5 routes using 5796 bytes of memory
3 groups, 0.66 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 239.55.55.55, Source count: 1, Packets forwarded: 4051, Packets received: 4051
RP-tree: Forwarding: 0/0/0/0, Other: 0/0/0
Source: 172.16.101.2/32, Forwarding: 4051/0/114/0, Other: 4051/0/0Als de S,G-vermeldingen niet worden gemaakt, is het belangrijk om te bepalen of de multicast-pakketten worden ontvangen op de verwachte interface. Er zijn een aantal opties om deze situatie te bevestigen met behulp van een ingesloten pakketvastlegging (EPC) of met een pakkettracering, in de volgende output werd een EPC genomen in de inkomende (Te0/0/2) en uitgaande (Te0/0/5) interfaces van de C800 router. In dit werkende scenario kunt u de originele multicast stroom 239.5.5.5 inkomende en de nieuwe 239.55.55.55 stroom waarnemen die de router egresseren:
Mcast_SR#monitor capture msr buffer size 10 match any interface tenGigabitEthernet 0/0/2 in
Mcast_SR#monitor capture msr start
Started capture point : msr
*Oct 16 17:59:06.986: %BUFCAP-6-ENABLE: Capture Point msr enabled.
Mcast_SR#monitor capture msr stop
Stopped capture point : msr
Mcast_SR#s
*Oct 16 17:59:25.699: %BUFCAP-6-DISABLE: Capture Point msr disabled
Mcast_SR#show monitor capture msr buffer brief
----------------------------------------------------------------------------
# size timestamp source destination dscp protocol
----------------------------------------------------------------------------
0 114 0.000000 192.168.0.2 -> 239.5.5.5 0 BE ICMP
1 114 2.000000 192.168.0.2 -> 239.5.5.5 0 BE ICMP
2 68 2.979961 192.168.0.5 -> 224.0.0.13 48 CS6 PIM
3 114 4.000000 192.168.0.2 -> 239.5.5.5 0 BE ICMP
4 114 6.000000 192.168.0.2 -> 239.5.5.5 0 BE ICMP
5 114 8.000000 192.168.0.2 -> 239.5.5.5 0 BE ICMP
6 114 10.000000 192.168.0.2 -> 239.5.5.5 0 BE ICMP
7 114 12.000000 192.168.0.2 -> 239.5.5.5 0 BE ICMP
8 114 14.001007 192.168.0.2 -> 239.5.5.5 0 BE ICMP
9 114 16.001999 192.168.0.2 -> 239.5.5.5 0 BE ICMP
10 114 18.001007 192.168.0.2 -> 239.5.5.5 0 BE ICMP
Mcast_SR#monitor capture msr buffer size 10 match any interface tenGigabitEthernet0/0/5 out
Mcast_SR#monitor capture msr start
Started capture point : msr
*Oct 16 18:07:26.846: %BUFCAP-6-ENABLE: Capture Point msr enabled.
Mcast_SR#monitor capture msr stop
Stopped capture point : msr
*Oct 16 18:07:50.360: %BUFCAP-6-DISABLE: Capture Point msr disabled.
Mcast_SR#show monitor capture msr buffer brief
----------------------------------------------------------------------------
# size timestamp source destination dscp protocol
----------------------------------------------------------------------------
0 73 0.000000 172.16.0.1 -> 172.16.0.2 48 CS6 TCP
1 114 0.172040 172.16.101.2 -> 239.55.55.55 0 BE ICMP 2 114 2.173047 172.16.101.2 -> 239.55.55.55 0 BE ICMP
3 114 4.172040 172.16.101.2 -> 239.55.55.55 0 BE ICMP
4 114 6.173047 172.16.101.2 -> 239.55.55.55 0 BE ICMP
5 114 8.172040 172.16.101.2 -> 239.55.55.55 0 BE ICMP
6 114 10.172040 172.16.101.2 -> 239.55.55.55 0 BE ICMP
7 114 12.173047 172.16.101.2 -> 239.55.55.55 0 BE ICMP
8 114 14.175046 172.16.101.2 -> 239.55.55.55 0 BE ICMP
9 114 16.176038 172.16.101.2 -> 239.55.55.55 0 BE ICMP
10 114 18.176038 172.16.101.2 -> 239.55.55.55 0 BE ICMP
11 46 19.318029 172.16.0.1 -> 224.0.0.1 48 CS6 IGMP
12 114 20.177045 172.16.101.2 -> 239.55.55.55 0 BE ICMP
13 72 20.629017 172.16.0.1 -> 224.0.0.13 48 CS6 PIM
14 114 22.178037 172.16.101.2 -> 239.55.55.55 0 BE ICMP
15 430 23.273033 90:77:EE:3C:80:05 -> 01:00:0C:CC:CC:CC -- LLCEr is ook een Packet Trace met een uitgebreide toegangscontrolelijst (ACL) met filtering op de 239.5.5.5 geïmplementeerd. Van de volgende output kan worden opgemerkt dat de pakketten worden ontvangen bij de interface Te0/0/2 en aanvankelijk worden verbruikt en intern gekopieerd om later als inputpakketten in Vif1 interface te worden gebruikt en dan door:sturen vertaald door interface Te0/0/5:
Mcast_SR#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Mcast_SR(config)#ip access-list extended original-mcast Mcast_SR(config-ext-nacl)#permit ip any host 239.5.5.5 Mcast_SR(config-ext-nacl)#end Mcast_SR# *Oct 16 18:31:49.187: %SYS-5-CONFIG_I: Configured from console by console Mcast_SR#debug platform packet-trace packet 16 Please remember to turn on 'debug platform condition start' for packet-trace to work Mcast_SR#debug platform condition ipv4 access-list original-mcast ingress Mcast_SR#debug platform condition start Mcast_SR#show platform packet-trace packet all Packet: 0 CBUG ID: 0 Summary Input : TenGigabitEthernet0/0/2 Output :State : CONS Packet Consumed Silently Timestamp Start : 521286121898055 ns (10/16/2023 18:33:39.36879 UTC) Stop : 521286122522268 ns (10/16/2023 18:33:39.37503 UTC) Path Trace Feature: IPV4(Input) Input : TenGigabitEthernet0/0/2 Output : Source : 192.168.0.2 Destination : 239.5.5.5 Protocol : 1 (ICMP) Packet: 1 CBUG ID: 0 Summary Input : TenGigabitEthernet0/0/2 Output : State : CONS Packet Consumed Silently Timestamp Start : 521286121980895 ns (10/16/2023 18:33:39.36962 UTC) Stop : 521286122618968 ns (10/16/2023 18:33:39.37600 UTC) Path Trace Feature: PACKET_COPY Original packet number: 0 Feature: IPV4(Input) Input : TenGigabitEthernet0/0/2 Output : Source : 192.168.0.2 Destination : 239.5.5.5 Protocol : 1 (ICMP) Packet: 2 CBUG ID: 0 Summary Input : Vif1 Output : TenGigabitEthernet0/0/5 State : FWD Timestamp Start : 521286122038938 ns (10/16/2023 18:33:39.37020 UTC) Stop : 521286122694795 ns (10/16/2023 18:33:39.37676 UTC) Path Trace Feature: PACKET_COPY Original packet number: 1 Feature: IPV4(Input) Input : Vif1 Output : Source : 172.16.101.2 Destination : 239.55.55.55 Protocol : 1 (ICMP)
Het is belangrijk om ook de Multicast Routing Information Base (MRIB) en Multicast Forwarding Information Base (MFIB) op Catalyst 8K te controleren. Merk op dat de hardware geïnstalleerde (HW) vlaggen en de hardware-doorsturen tellers toenemen met in het meest ideale geval zeer weinig RPF-fouten (Reverse Path Forwarding) of druppels die worden gezien. Let ook op de voorwaartse (F) vlag die gekoppeld is aan de uitgang interface (Te0/0/5) naar ASR1000 router:
Mcast_SR#show ip mrib route IP Multicast Routing Information Base Entry flags: L - Domain-Local Source, E - External Source to the Domain, C - Directly-Connected Check, S - Signal, IA - Inherit Accept, D - Drop ET - Data Rate Exceeds Threshold,K - Keepalive,DDE - Data Driven Event ME - MoFRR ECMP Flow based, MNE - MoFRR Non-ECMP Flow based, MP - Primary MoFRR Non-ECMP Flow based entry, e - Encap helper tunnel flag Interface flags: F - Forward, A - Accept, IC - Internal Copy, NS - Negate Signal, DP - Don't Preserve, SP - Signal Present, II - Internal Interest, ID - Internal Disinterest, LI - Local Interest, LD - Local Disinterest, MD - mCAC Denied, MI - mLDP Interest A2 - MoFRR ECMP Backup Accept (*,224.0.0.0/4) Flags: C (*,224.0.1.40) RPF nbr: 0.0.0.0 Flags: C TenGigabitEthernet0/0/2 Flags: F NS TenGigabitEthernet0/0/5 Flags: F NS Loopback0 Flags: F IC NS Tunnel1 Flags: A (*,239.5.5.5) RPF nbr: 0.0.0.0 Flags: C Vif1 Flags: F NS SR(172.16.101.2, 239.55.55.55) Index(2, 2) Tunnel1 Flags: A (*,239.55.55.55) RPF nbr: 0.0.0.0 Flags: C TenGigabitEthernet0/0/5 Flags: F NS Tunnel1 Flags: A (172.16.101.2,239.55.55.55) RPF nbr: 0.0.0.0 Flags: Vif1 Flags: A TenGigabitEthernet0/0/5 Flags: F NS (192.168.0.2,239.5.5.5) RPF nbr: 192.168.0.5 Flags: TenGigabitEthernet0/0/2 Flags: A NS Vif1 Flags: F NS SR(172.16.101.2, 239.55.55.55) Index(2, 2) Mcast_SR#show ip mfib 192.168.0.2 239.5.5.5 Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag, ET - Data Rate Exceeds Threshold, K - Keepalive DDE - Data Driven Event, HW - Hardware Installed ME - MoFRR ECMP entry, MNE - MoFRR Non-ECMP entry, MP - MFIB MoFRR Primary, RP - MRIB MoFRR Primary, P - MoFRR Primary MS - MoFRR Entry in Sync, MC - MoFRR entry in MoFRR Client, e - Encap helper tunnel flag. I/O Item Flags: IC - Internal Copy, NP - Not platform switched, NS - Negate Signalling, SP - Signal Present, A - Accept, F - Forward, RA - MRIB Accept, RF - MRIB Forward, MA - MFIB Accept, A2 - Accept backup, RA2 - MRIB Accept backup, MA2 - MFIB Accept backup Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second Other counts: Total/RPF failed/Other drops I/O Item Counts: HW Pkt Count/FS Pkt Count/PS Pkt Count Egress Rate in pps Default (192.168.0.2,239.5.5.5) Flags: HW SW Forwarding: 1/0/100/0, Other: 0/0/0 HW Forwarding: 6530/0/114/0, Other: 2/2/0 TenGigabitEthernet0/0/2 Flags: A Vif1, SR/(172.16.101.2,239.55.55.55):553648130 Flags: F NS Pkts: 0/0/1 Rate: 0 pps Mcast_SR#show ip mfib 172.16.101.2 239.55.55.55 Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag, ET - Data Rate Exceeds Threshold, K - Keepalive DDE - Data Driven Event, HW - Hardware Installed ME - MoFRR ECMP entry, MNE - MoFRR Non-ECMP entry, MP - MFIB MoFRR Primary, RP - MRIB MoFRR Primary, P - MoFRR Primary MS - MoFRR Entry in Sync, MC - MoFRR entry in MoFRR Client, e - Encap helper tunnel flag. I/O Item Flags: IC - Internal Copy, NP - Not platform switched, NS - Negate Signalling, SP - Signal Present, A - Accept, F - Forward, RA - MRIB Accept, RF - MRIB Forward, MA - MFIB Accept, A2 - Accept backup, RA2 - MRIB Accept backup, MA2 - MFIB Accept backup Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second Other counts: Total/RPF failed/Other drops I/O Item Counts: HW Pkt Count/FS Pkt Count/PS Pkt Count Egress Rate in pps Default (172.16.101.2,239.55.55.55) Flags: HW SW Forwarding: 0/0/0/0, Other: 0/0/0 HW Forwarding: 6550/0/114/0, Other: 0/0/0 Vif1 Flags: A TenGigabitEthernet0/0/5 Flags: F NS Pkts: 0/0/0 Rate: 0 pps Mcast_SR#show adjacency vif1 detail Protocol Interface Address IP Vif1 point2point(8) 13270 packets, 657502 bytes epoch 0 sourced in sev-epoch 0 empty encap string P2P-ADJMcast_SR#show platform software ip rp active mfib group 239.5.5.5/32 Route flags: S - Signal; C - Directly connected; IA - Inherit A Flag; L - Local; BR - Bidir route *, 239.5.5.5/32 --> OBJ_INTF_LIST (0x15) Obj id: 0x15, Flags: C OM handle: 0x3480200a50 Mcast_SR#show platform software ip rp active mfib group 239.55.55.55/32 Route flags: S - Signal; C - Directly connected; IA - Inherit A Flag; L - Local; BR - Bidir route *, 239.55.55.55/32 --> OBJ_INTF_LIST (0x36) Obj id: 0x36, Flags: C OM handle: 0x34801fa988 Mcast_SR#show platform software mlist rp active index 0x15 Multicast List entries OCE Flags: NS - Negate Signalling; IC - Internal copy; A - Accept; F - Forward; OCE Type OCE Flags Interface -------------------------------------------------------------------------------------- 0xf8000029 OBJ_ADJACENCY NS, F Vif1 0xf8000186 OBJ_ADJACENCY A Tunnel1 Mcast_SR#show platform software mlist rp active index 0x36 Multicast List entries OCE Flags: NS - Negate Signalling; IC - Internal copy; A - Accept; F - Forward; OCE Type OCE Flags Interface -------------------------------------------------------------------------------------- 0xf80000d1 OBJ_ADJACENCY NS, F TenGigabitEthernet0/0/5 0xf8000186 OBJ_ADJACENCY A Tunnel1
Voor de RPF-controle is het belangrijk om dit over de verschillende apparaten in het multicastpad te verifiëren.
C9000#show ip rpf 192.168.0.2
RPF information for ? (192.168.0.2)
RPF interface: TenGigabitEthernet1/0/6
RPF neighbor: ? (192.168.0.2) - directly connected
RPF route/mask: 192.168.0.0/30
RPF type: multicast (connected)
Doing distance-preferred lookups across tables
RPF topology: ipv4 multicast base
Mcast_SR#show ip rpf 192.168.0.2
RPF information for ? (192.168.0.2)
RPF interface: TenGigabitEthernet0/0/2
RPF neighbor: ? (192.168.0.5)
RPF route/mask: 192.168.0.0/30
RPF type: unicast (bgp 65001)
Doing distance-preferred lookups across tables
RPF topology: ipv4 multicast base, originated from ipv4 unicast base
Mcast_SR#show ip rpf 172.16.101.2
RPF information for ? (172.16.101.2)
RPF interface: Vif1
RPF neighbor: ? (172.16.101.2) - directly connected
RPF route/mask: 172.16.101.0/30
RPF type: multicast (connected)
Doing distance-preferred lookups across tables
RPF topology: ipv4 multicast base
ASR1000#show ip rpf 172.16.101.2
RPF information for ? (172.16.101.2)
RPF interface: TenGigabitEthernet0/1/1
RPF neighbor: ? (172.16.0.1)
RPF route/mask: 172.16.101.0/30
RPF type: unicast (bgp 65002)
Doing distance-preferred lookups across tables
RPF topology: ipv4 multicast base, originated from ipv4 unicast baseTen slotte kunt u bevestigen dat het verkeer wordt ontvangen en doorgestuurd bij de LHR, de eerste opname laat zien hoe ASR1000 de pakketten heeft ontvangen uit de nieuwe stream (172.16.101.2, 239.55.55.55) waar de IPv4-adressen zijn vertaald zoals verwacht. De tweede opname toont het verkeer dat naar de ontvanger wordt doorgestuurd.
ASR1000#monitor capture LHR buffer size 10 match any interface TenGigabitEthernet 0/1/1 in
ASR1000#monitor capture LHR start
Started capture point : LHR
*Oct 17 15:16:06.192: %BUFCAP-6-ENABLE: Capture Point LHR enabled.show moni
ASR1000#show monitor capture LHR buffer brief
----------------------------------------------------------------------------
# size timestamp source destination dscp protocol
----------------------------------------------------------------------------
0 73 0.000000 172.16.0.1 -> 172.16.0.2 48 CS6 TCP
1 114 0.050992 172.16.101.2 -> 239.55.55.55 0 BE ICMP 2 114 2.051984 172.16.101.2 -> 239.55.55.55 0 BE ICMP
3 54 2.896993 172.16.0.1 -> 172.16.0.2 48 CS6 TCP
4 114 4.051984 172.16.101.2 -> 239.55.55.55 0 BE ICMP
5 72 4.967989 172.16.0.1 -> 224.0.0.13 48 CS6 PIM
6 114 6.052991 172.16.101.2 -> 239.55.55.55 0 BE ICMP
7 114 8.053983 172.16.101.2 -> 239.55.55.55 0 BE ICMP
8 114 10.053983 172.16.101.2 -> 239.55.55.55 0 BE ICMP
9 114 12.053983 172.16.101.2 -> 239.55.55.55 0 BE ICMP
10 114 14.055997 172.16.101.2 -> 239.55.55.55 0 BE ICMP
11 114 16.056989 172.16.101.2 -> 239.55.55.55 0 BE ICMP
12 114 18.055997 172.16.101.2 -> 239.55.55.55 0 BE ICMP
ASR1000#monitor capture LHR stop
Stopped capture point : LHR
ASR1000#
*Oct 17 15:16:32.029: %BUFCAP-6-DISABLE: Capture Point LHR disabled.
ASR1000#monitor capture TO_RECEIVER buffer size 10 match any interface GigabitEthernet 0/0/0 out
ASR1000#monitor capture TO_RECEIVER start
Started capture point : TO_RECEIVER
*Oct 17 15:19:00.309: %BUFCAP-6-ENABLE: Capture Point TO_RECEIVER enabled.ni
ASR1000#show monitor capture TO_RECEIVER buffer brief
----------------------------------------------------------------------------
# size timestamp source destination dscp protocol
----------------------------------------------------------------------------
0 114 0.000000 172.16.101.2 -> 239.55.55.55 0 BE ICMP
1 46 0.276994 172.16.0.5 -> 224.0.0.1 48 CS6 IGMP
2 114 1.999009 172.16.101.2 -> 239.55.55.55 0 BE ICMP 3 114 4.000000 172.16.101.2 -> 239.55.55.55 0 BE ICMP
4 46 5.550027 172.16.0.5 -> 224.0.1.40 48 CS6 IGMP
5 114 5.999009 172.16.101.2 -> 239.55.55.55 0 BE ICMP
6 114 8.000000 172.16.101.2 -> 239.55.55.55 0 BE ICMP
7 114 10.001007 172.16.101.2 -> 239.55.55.55 0 BE ICMP
8 114 12.001999 172.16.101.2 -> 239.55.55.55 0 BE ICMP
9 114 14.003006 172.16.101.2 -> 239.55.55.55 0 BE ICMP
10 114 16.003998 172.16.101.2 -> 239.55.55.55 0 BE ICMP
ASR1000#monitor capture TO_RECEIVER stop
Stopped capture point : TO_RECEIVER
*Oct 17 15:19:24.938: %BUFCAP-6-DISABLE: Capture Point TO_RECEIVER disabled. Als de *,G op een bepaald moment ontbreekt, kunt u de Internet Group Management Protocol (IGMP)-status valideren met de opdrachten ip igmp-lidmaatschap <groep> tonen en ip igmp-groepen <groep> tonen. In dit scenario wordt verwacht dat er een vermelding wordt weergegeven voor de vertaalde multicastgroep 239.55.55.55.
ASR1000#show ip igmp membership 239.55.55.55
Flags: A - aggregate, T - tracked
L - Local, S - static, V - virtual, R - Reported through v3
I - v3lite, U - Urd, M - SSM (S,G) channel
1,2,3 - The version of IGMP, the group is in
Channel/Group-Flags:
/ - Filtering entry (Exclude mode (S,G), Include mode (G))
Reporter:
- last reporter if group is not explicitly tracked
/
-
reporter in include mode,
reporter in exclude Channel/Group Reporter Uptime Exp. Flags Interface
*,239.55.55.55 172.16.0.6 1w0d 02:40 2A Gi0/0/0
ASR1000#show ip igmp groups 239.55.55.55 IGMP Connected Group Membership Group Address Interface Uptime Expires Last Reporter Group Accounted 239.55.55.55 GigabitEthernet0/0/0 01:11:56 00:02:49 172.16.0.6
Daarnaast kan bij de LHR een verificatie van de route worden gebruikt om te bevestigen dat de interface naar de ontvanger wordt toegevoegd aan de OLIE en het gebruik van een mtrace om het omgekeerde pad naar beide bronnen te bevestigen.
ASR1000#show ip mroute 239.55.55.55
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag, l - LISP Decap Refcnt Contributor
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 239.55.55.55), 23:28:12/stopped, RP 10.100.100.1, flags: SJC
Incoming interface: TenGigabitEthernet0/1/1, RPF nbr 172.16.0.1
Outgoing interface list:
GigabitEthernet0/0/0, Forward/Sparse, 00:01:52/00:02:48
(172.16.101.2, 239.55.55.55), 00:10:11/00:02:40, flags: JT
Incoming interface: TenGigabitEthernet0/1/1, RPF nbr 172.16.0.1
Outgoing interface list:
GigabitEthernet0/0/0, Forward/Sparse, 00:01:52/00:02:48
ASR1000#mtrace 172.16.101.2 Type escape sequence to abort. Mtrace from 172.16.101.2 to 172.16.0.2 via RPF From source (?) to destination (?) Querying full reverse path... 0 172.16.0.2 -1 172.16.0.2 ==> 172.16.0.2 PIM/MBGP [172.16.101.0/30] -2 172.16.0.1 ==> 172.16.101.1 PIM_MT [172.16.101.0/30] -3 172.16.101.2
ASR1000#mtrace 192.168.0.2 Type escape sequence to abort. Mtrace from 192.168.0.2 to 172.16.0.2 via RPF From source (?) to destination (?) Querying full reverse path... 0 172.16.0.2 -1 172.16.0.2 ==> 172.16.0.2 PIM/MBGP [192.168.0.0/30] -2 172.16.0.1 ==> 192.168.0.6 PIM/MBGP [192.168.0.0/30] -3 192.168.0.5 ==> 192.168.0.1 PIM_MT [192.168.0.0/30] -4 192.168.0.2Gerelateerde informatie
Revisiegeschiedenis
| Revisie | Publicatiedatum | Opmerkingen |
|---|---|---|
1.0 |
20-Oct-2023 |
Eerste vrijgave |
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