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Este documento describe por qué el router de la sucursal secundaria no puede aprender el mapeo de RP automático (punto de encuentro) y proporciona los pasos para resolver el problema.
En una configuración de router de borde dual en una sucursal SD-WAN, el router SD-WAN principal puede aprender los mensajes de asignación Auto-RP mientras que el router SD-WAN secundario no. Si el router SD-WAN elegido como Protocol Independent Multicast (PIM) Assert Forwarder no aprendió las asignaciones de RP automático, los switches de flujo descendente de la sucursal tampoco recibirán estas asignaciones.
ip pim rp-address 169.1.224.1 override
ip pim autorp listener
ip pim send-rp-announce Loopback1 scope 30 group-list RP-Groups
ip pim send-rp-discovery Loopback0 scope 30
ip pim ssm range PIM-SSM-Range
dc1-9k-01#sh ip access-lists RP-Groups
Standard IP access list RP-Groups
30 permit 239.1.0.0, wildcard bits 0.0.255.255
Branch-9k#sh ip pim rp mapping
PIM Group-to-RP Mappings
Branch-9k#
Configuraciones de PIM en el switch:
Branch-9k#sh run | in pim
ip pim sparse-mode
ip pim sparse-mode
ip pim sparse-mode
ip pim autorp listener
ip pim ssm range PIM-SSM-Range
Branch-9k#
Branch-C8300-01#sh ip mfib vrf 10 224.0.1.40
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
VRF 10
(*,224.0.1.40) Flags: C HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 1741/1741/0
Lspvif0, LSM/0, RPF-ID: *, Flags: F NS
Pkts: 0/0/0 Rate: 0 pps
GigabitEthernet0/0/0.100 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
(169.1.10.3,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 29642/29642/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: IC
(169.1.10.4,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 29939/29939/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A NS
GigabitEthernet0/0/0.100 Flags: IC
(169.1.20.2,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 47783/47783/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: IC
(169.1.20.6,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 47720/47720/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: IC
(169.1.20.10,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 47784/47784/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: IC
(169.1.20.14,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 47724/47724/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: IC
(169.1.100.7,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 60088/60088/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: IC
(169.2.20.2,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 47680/47680/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: IC
(169.2.20.6,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 47640/47640/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: IC
Branch-C8300-01#
Branch-C8300-02#sh ip mfib vrf 10 224.0.1.40
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
VRF 10
(*,224.0.1.40) Flags: C HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 10549/10549/0
Lspvif0, LSM/0, RPF-ID: *, Flags: F NS
Pkts: 0/0/0 Rate: 0 pps
GigabitEthernet0/0/0.100 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
(169.1.10.3,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A NS
GigabitEthernet0/0/0.100 Flags: F IC NS <==
Pkts: 0/0/0 Rate: 0 pps
(169.1.10.4,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A NS
GigabitEthernet0/0/0.100 Flags: F IC NS <==
Pkts: 0/0/0 Rate: 0 pps
(169.1.20.2,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
(169.1.20.6,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
(169.1.20.10,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A NS
GigabitEthernet0/0/0.100 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
(169.1.20.14,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A NS
GigabitEthernet0/0/0.100 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
(169.2.20.2,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
(169.2.20.6,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
Lspvif0, LSM/0, RPF-ID: *, Flags: A
GigabitEthernet0/0/0.100 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
Branch-C8300-02#
El indicador F que se está estableciendo indica que el router Branch-C8300-02 es el reenviador designado para AutoRP y para el tráfico multicast. Cuando los vecinos PIM están en el mismo dominio de difusión, se elige el reenviador PIM Assert/Reenviador designado. El router con la dirección IP más alta se elige como reenviador PIM Assert/reenviador designado. (La distancia administrativa (AD) y la métrica eran iguales.) En esta situación, el router de sucursal 2 tiene una dirección IP más alta en comparación con el router de sucursal 1:
Branch-C8300-01#sh run interface Gi0/0/0.100
Building configuration...
Current configuration : 336 bytes
!
interface GigabitEthernet0/0/0.100
description OSPF peering interface1
encapsulation dot1Q 100
vrf forwarding 10
ip address 169.101.10.1 255.255.255.240
no ip redirects
ip pim sparse-mode
ip nbar protocol-discovery
ip ospf network broadcast
ip ospf dead-interval 40
ip ospf 10 area 0
ip ospf cost 10
arp timeout 1200
end
Branch-C8300-02#sh run interface Gi0/0/0.100
Building configuration...
Current configuration : 336 bytes
!
interface GigabitEthernet0/0/0.100
description OSPF peering interface1
encapsulation dot1Q 100
vrf forwarding 10
ip address 169.101.10.2 255.255.255.240
no ip redirects
ip pim sparse-mode
ip nbar protocol-discovery
ip ospf network broadcast
ip ospf dead-interval 40
ip ospf 10 area 0
ip ospf cost 15
arp timeout 1200
end
Branch-C8300-01#sh ip pim vrf 10 rp mapping
PIM Group-to-RP Mappings
Group(s) 239.195.0.0/16
RP 10.125.125.1 (?), v2v1
Info source: 169.254.100.9 (?), elected via Auto-RP
Uptime: 1w0d, expires: 00:02:31
Branch-C8300-01#
Branch-C8300-02#sh ip pim vrf 10 rp mapping
PIM Group-to-RP Mappings
Branch-C8300-02#
DC-8500-01#sh ip mfib vrf 10 224.0.1.40
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
VRF 10
(*,224.0.1.40) Flags: C HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 294/294/0
TenGigabitEthernet0/0/0.10 Flags: F IC NS
Pkts: 0/0/0 Rate: 0 pps
Lspvif0, LSM/1, RPF-ID: *, Flags: F NS
Pkts: 0/0/0 Rate: 0 pps
(169.1.10.4,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
TenGigabitEthernet0/0/0.10 Flags: A IC
Lspvif0, LSM/1, RPF-ID: *, Flags: F
Pkts: 0/0/0 Rate: 0 pps
(169.1.20.2,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
TenGigabitEthernet0/0/0.10 Flags: A IC
Lspvif0, LSM/1, RPF-ID: *, Flags: F
Pkts: 0/0/0 Rate: 0 pps
(169.1.20.6,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
TenGigabitEthernet0/0/0.10 Flags: A IC
Lspvif0, LSM/1, RPF-ID: *, Flags: F
Pkts: 0/0/0 Rate: 0 pps
(169.1.20.10,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
TenGigabitEthernet0/0/0.10 Flags: A IC
Lspvif0, LSM/1, RPF-ID: *, Flags: F
Pkts: 0/0/0 Rate: 0 pps
(169.1.20.14,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
TenGigabitEthernet0/0/0.10 Flags: A IC
Lspvif0, LSM/1, RPF-ID: *, Flags: F
Pkts: 0/0/0 Rate: 0 pps
(169.1.100.7,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
TenGigabitEthernet0/0/0.10 Flags: A IC
Lspvif0, LSM/1, RPF-ID: *, Flags: F <==
Pkts: 0/0/0 Rate: 0 pps
(169.2.20.2,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
TenGigabitEthernet0/0/0.10 Flags: A IC
Lspvif0, LSM/1, RPF-ID: *, Flags: F
Pkts: 0/0/0 Rate: 0 pps
(169.2.20.6,224.0.1.40) Flags: HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
TenGigabitEthernet0/0/0.10 Flags: A IC
Lspvif0, LSM/1, RPF-ID: *, Flags: F
Pkts: 0/0/0 Rate: 0 pps
Lspvif0 es la interfaz de túnel virtual como el túnel punto a multipunto (P2MP), es decir, un terminal a varios terminales remotos. El túnel Lspvif0 se utiliza en la multidifusión SD-WAN. Lspvif0 es el túnel virtual que indica que los paquetes se transmiten a través de la superposición SD-WAN.
DC-8500-01#sh interfaces Lspvif0
Lspvif0 is up, line protocol is up
Hardware is
Interface is unnumbered. Using address of SD-WAN-system-intf (169.1.100.3)
MTU 17892 bytes, BW 10000000 Kbit/sec, DLY 5000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation LOOPBACK, loopback not set
Keepalive set (10 sec)
Last input never, output 00:00:10, output hang never
Last clearing of "show interface" counters never
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
3 packets input, 210 bytes, 0 no buffer
Received 0 broadcasts (3 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
1628856 packets output, 71967520 bytes, 0 underruns
Output 0 broadcasts (1289488 IP multicasts)
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
LSM/1 en la salida MFIB indica la lista de replicación asociada al túnel Lspvif0.
Según el diseño de Cisco SD-WAN Multicast, el router DC aprende los routers de sucursal habilitados para PIM a través del protocolo de administración de superposición (OMP) y la IP del sistema de estos routers de sucursal se agrega a la lista de replicación.
DC-8500-01#sh SD-WAN omp multicast-auto-discover
Code:
C -> chosen
I -> installed
Red -> redistributed
Rej -> rejected
L -> looped
R -> resolved
S -> stale
Ext -> extranet
Stg -> staged
IA -> On-demand inactive
Inv -> invalid
BR-R -> border-router reoriginated
TGW-R -> transport-gateway reoriginated
ADDRESS SOURCE FROM
FAMILY TENANT VPN ORIGINATOR PEER STATUS
---------------------------------------------------------
ipv4 0 10 169.1.100.3 0.0.0.0 C,Red,R
0 10 169.1.100.4 2.2.2.1 Inv,U
2.2.2.2 Inv,U
0 10 169.101.100.1 2.2.2.1 C,R
2.2.2.2 C,I,R
0 10 169.101.100.2 2.2.2.1 C,R
2.2.2.2 C,I,R
Nota: Los paquetes AutoRP del router DC se enviarán a los routers de sucursal a través del túnel BFD SD-WAN (plano de datos). El router DC encapsulará los paquetes AutoRP al túnel IPsec y lo reenviará a los routers de sucursal.
DC-8500-01#sh mvpn replication lsm-id 1
Repl ID : 1FFFFF LSM ID : 1 Uptime : 1w3d
Path Set ID : 25
Replication branches: 2
IR (169.101.100.1)
Uptime : 1w3d Refcount : 2
Remote Label : 1006
IR (169.101.100.2)
Uptime : 1w3d Refcount : 2
Remote Label : 1004
DC-8500-01#sh platform software SD-WAN f0 next-hop indirect all
Show SD-WAN next-hop oce all :
OCE ID: 0xf8000d9f, OCE Type: SD-WAN_NH_INDIRECT
Indirect: client_handle 0x5649f38aaa80, ppe addr 418b02c0
nhobj_type: SD-WAN_NH_LOCAL_SLA_CLASS, nhobj_handle: 0xf80805cf
label: 1006, dst_vpn: 10, nexthop sys_ip: 169.101.100.1, sla_class: 1
La cadena OCE indirecta es la cadena de reenvío interna creada cuando el router DC detecta las rutas de unidifusión del router de sucursal respectivo. Esto es según el diseño de la multidifusión SD-WAN, donde la multidifusión aprovechará el routing de unidifusión para reenviar información RP de multidifusión.
El motivo por el cual el router DC no reenvía la asignación AutoRP al router 02 de la sucursal es que el OCE indirecto está creado sólo para el router 01 de la sucursal, pero no para el router 02 de la sucursal. Sólo cuando se establece la cadena de reenvío interna al router de la sucursal respectivo, el router DC reenviará la asignación AutoRP a ese router de la sucursal.
DC-8500-01#sh ip route vrf 10 omp
Routing Table: 10
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, m - OMP
n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
H - NHRP, G - NHRP registered, g - NHRP registration summary
o - ODR, P - periodic downloaded static route, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
& - replicated local route overrides by connected
Gateway of last resort is 169.1.10.1 to network 0.0.0.0
m 169.101.0.0/16 [251/0] via 169.101.100.1, 2w0d, SD-WAN-system-intf
DC-8500-01#
DC-8500-01#sh SD-WAN omp routes 169.101.0.0/16
Code:
C -> chosen
I -> installed
Red -> redistributed
Rej -> rejected
L -> looped
R -> resolved
S -> stale
Ext -> extranet
Inv -> invalid
Stg -> staged
IA -> On-demand inactive
U -> TLOC unresolved
BR-R -> border-router reoriginated
TGW-R -> transport-gateway reoriginated
AFFINITY
PATH ATTRIBUTE GROUP
TENANT VPN PREFIX FROM PEER ID LABEL STATUS TYPE TLOC IP COLOR ENCAP PREFERENCE NUMBER REGION ID REGION PATH
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
0 10 169.101.0.0/16 2.2.2.1 15 1004 R installed 169.101.100.2 public-internet ipsec - None None -
2.2.2.1 19 1006 C,I,R installed 169.101.100.1 biz-internet ipsec - None None -
2.2.2.2 16 1004 R installed 169.101.100.2 public-internet ipsec - None None -
2.2.2.2 21 1006 C,R installed 169.101.100.1 biz-internet ipsec - None None -
DC-8500-01#
La razón por la que las rutas aprendidas del router secundario no se instalan en la RIB es porque las rutas aprendidas del router secundario tienen un costo OSPF más alto en comparación con el router primario:
DC-8500-01#sh SD-WAN omp routes 169.101.0.0/16 detail
--------------------------------------------------------------------------
omp route entries for tenant-id 0 vpn 10 route 169.101.0.0/16
--------------------------------------------------------------------------
RECEIVED FROM:
peer 2.2.2.1
path-id 15
label 1004
status R
loss-reason origin-metric
lost-to-peer 2.2.2.1
lost-to-path-id 19
Attributes:
originator 169.101.100.2
type installed
tloc 169.101.100.2, public-internet, ipsec
ultimate-tloc not set
domain-id not set
overlay-id 1
site-id 10
preference not set
affinity-group None
region-id None
region-path not set
route-reoriginator not set
tag not set
origin-proto OSPF-external-1
origin-metric 35
as-path not set
community not set
unknown-attr-len not set
RECEIVED FROM:
peer 2.2.2.1
path-id 19
label 1006
status C,I,R
loss-reason not set
lost-to-peer not set
lost-to-path-id not set
Attributes:
originator 169.101.100.1
type installed
tloc 169.101.100.1, biz-internet, ipsec
ultimate-tloc not set
domain-id not set
overlay-id 1
site-id 10
preference not set
affinity-group None
region-id None
region-path not set
route-reoriginator not set
tag not set
origin-proto OSPF-external-1
origin-metric 30
as-path not set
community not set
unknown-attr-len not set
RECEIVED FROM:
peer 2.2.2.2
path-id 16
label 1004
status R
loss-reason origin-metric
lost-to-peer 2.2.2.2
lost-to-path-id 21
Attributes:
originator 169.101.100.2
type installed
tloc 169.101.100.2, public-internet, ipsec
ultimate-tloc not set
domain-id not set
overlay-id 1
site-id 10
preference not set
affinity-group None
region-id None
region-path not set
route-reoriginator not set
tag not set
origin-proto OSPF-external-1
origin-metric 35
as-path not set
community not set
unknown-attr-len not set
RECEIVED FROM:
peer 2.2.2.2
path-id 21
label 1006
status C,R
loss-reason not set
lost-to-peer not set
lost-to-path-id not set
Attributes:
originator 169.101.100.1
type installed
tloc 169.101.100.1, biz-internet, ipsec
ultimate-tloc not set
domain-id not set
overlay-id 1
site-id 10
preference not set
affinity-group None
region-id None
region-path not set
route-reoriginator not set
tag not set
origin-proto OSPF-external-1
origin-metric 30
as-path not set
community not set
unknown-attr-len not set
DC-8500-01#
omp
no shutdown
send-path-limit 16
ecmp-limit 16
graceful-restart
no as-dot-notation
timers
holdtime 300
advertisement-interval 1
graceful-restart-timer 43200
eor-timer 300
exit
address-family ipv4 vrf 10
advertise ospf external <==
!
address-family ipv6
advertise connected
advertise static
Branch-C8300-02#sh run interface Lo0
Building configuration...
Current configuration : 151 bytes
!
interface Loopback0
description Management loopback
vrf forwarding 10
ip address 169.101.100.2 255.255.255.255
no ip redirects
ip mtu 1500
end
Configuraciones de OMP en el router 02 de la sucursal para anunciar las rutas conectadas:
omp
no shutdown
overlay-as 65376
send-path-limit 16
ecmp-limit 16
graceful-restart
no as-dot-notation
timers
holdtime 60
advertisement-interval 1
graceful-restart-timer 43200
eor-timer 300
exit
address-family ipv4 vrf 10
advertise ospf external
advertise connected <==
!
address-family ipv6
advertise connected
advertise static
!
!
Ahora puede ver la asignación AutoRP aprendida en el router de sucursal 02:
Branch-C8300-02# sh ip pim vrf 10 rp mapping
PIM Group-to-RP Mappings
Group(s) 239.195.0.0/16
RP 10.125.125.1 (?), v2v1
Info source: 169.1.10.4 (terin.net.afrihost.co.za), elected via Auto-RP
Uptime: 00:02:18, expires: 00:02:47
Branch-C8300-02#
De manera similar, también puede ver la asignación AutoRP aprendida en el switch de sucursal:
Branch-9k#sh ip pim rp mapping
PIM Group-to-RP Mappings
Group(s) 239.195.0.0/16
RP 10.125.125.1 (?), v2v1
Info source: 169.254.100.9 (?), elected via Auto-RP
Uptime: 00:03:36, expires: 00:02:46
Acl: RP-Region-Ent-Sites, Static-Override
RP: 10.125.125.1 (?)
Cuando inspecciona la salida de la cadena Indirect OCE/Forwarding en el router DC, tiene entradas para system-ip de los routers de sucursal principal y secundario:
DC-8500-01#sh platform software SD-WAN f0 next-hop indirect all
Show SD-WAN next-hop oce all :
OCE ID: 0xf80009bf, OCE Type: SD-WAN_NH_INDIRECT
Indirect: client_handle 0x5649f389fbc0, ppe addr 418b05c0
nhobj_type: SD-WAN_NH_LOCAL_SLA_CLASS, nhobj_handle: 0xf808044f
label: 1006, dst_vpn: 10, nexthop sys_ip: 169.101.100.1, sla_class: 1
OCE ID: 0xf80009df, OCE Type: SD-WAN_NH_INDIRECT
Indirect: client_handle 0x5649f38a11f0, ppe addr 418b06d0
nhobj_type: SD-WAN_NH_LOCAL_SLA_CLASS, nhobj_handle: 0xf808045f
label: 1004, dst_vpn: 10, nexthop sys_ip: 169.101.100.2, sla_class: 1
Ahora puede ver que el router DC RIB también tiene instalados prefijos aprendidos del router 02 de la sucursal.
DC-8500-01#sh ip route vrf 10 omp
Routing Table: 10
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, m - OMP
n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
H - NHRP, G - NHRP registered, g - NHRP registration summary
o - ODR, P - periodic downloaded static route, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
& - replicated local route overrides by connected
Gateway of last resort is 169.1.10.1 to network 0.0.0.0
169.101.0.0/16 is variably subnetted, 3 subnets, 3 masks
m 169.101.0.0/16 [251/0] via 169.101.100.1, 13:59:47, SD-WAN-system-intf
m 169.101.10.0/28
[251/0] via 169.101.100.2, 00:07:50, SD-WAN-system-intf
m 169.101.100.2/32
[251/0] via 169.101.100.2, 00:07:50, SD-WAN-system-intf
Al implementar la multidifusión en la SD-WAN de Cisco, debe asegurarse de que todos los routers remotos (incluidos los routers principal y secundario) anuncian el prefijo de unidifusión al router SD-WAN más cercano al RP a través de OMP. La multidifusión SD-WAN aprovecha el routing unidifusión para crear una cadena de reenvío que es necesaria para transmitir la información del plano de control de multidifusión.
Revisión | Fecha de publicación | Comentarios |
---|---|---|
1.0 |
15-May-2025
|
Versión inicial |