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本文档介绍辅助分支路由器无法学习自动RP(交汇点)映射的原因,并提供解决此问题的步骤。
在SD-WAN分支站点的双边界路由器设置中,主SD-WAN路由器可以获取自动RP映射消息,而辅助SD-WAN路由器无法获取自动映射消息。如果被选为协议无关组播(PIM)断言转发器的SD-WAN路由器未获知自动RP映射,则分支处的下游交换机也不会收到这些映射。
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#
交换机上的PIM配置:
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#
设置的F标志表示路由器Branch-C8300-02是AutoRP和组播流量的指定转发器。当PIM邻居位于同一广播域中时,会选择PIM断言转发器/指定转发器。具有最高IP地址的路由器被选为PIM断言转发器/指定转发器。(管理距离(AD)和度量相同。) 在此场景中,Branch路由器2的IP地址比Branch路由器1的IP地址高:
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是类似点对多点(P2MP)隧道的虚拟隧道接口,即一个终端到多个远程终端。Lspvif0隧道用于SD-WAN组播。Lspvif0是指示数据包通过SD-WAN重叠传输的虚拟隧道。
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
MFIB输出中的LSM/1表示连接到Lspvif0隧道的复制列表。
根据Cisco SD-WAN组播的设计,DC路由器通过重叠管理协议(OMP)学习启用PIM的分支路由器,这些分支路由器的系统IP已添加到复制列表中。
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
注意:来自DC路由器的AutoRP数据包将通过SD-WAN BFD隧道(数据平面)发送到分支路由器。 DC路由器会将AutoRP数据包封装到IPsec隧道并将其转发到分支路由器。
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
间接OCE链是在DC路由器从各自的分支路由器获取单播路由时构建的内部转发链。这与SD-WAN组播的设计一致,在该设计中,组播将利用单播路由来转发组播RP信息。
DC路由器不将AutoRP映射转发到分支路由器02的原因在于,间接OCE只为Branch Router 01而非Branch Router 02而构建。只有当内部转发链建立到相应分支路由器时,DC路由器才会将AutoRP映射转发到该分支路由器。
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#
从辅助路由器获知的路由没有安装到RIB的原因是,从辅助路由器获知的路由与主路由器相比具有更高的OSPF开销:
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
在分支路由器02上进行OMP配置,以通告连接的路由:
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
!
!
现在您会看到分支路由器02上学习的AutoRP映射:
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#
同样,您还可以看到在分支机构交换机上学习的AutoRP映射:
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 (?)
当您检查DC路由器上的Indirect OCE/Forwarding chain输出时,它包含主分支路由器和辅助分支路由器的system-ip条目:
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
现在您会看到DC路由器RIB还安装了从分支路由器02学习的前缀。
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
在思科SD-WAN上实施组播时,您必须确保所有远程路由器(包括主路由器和辅助路由器)都通过OMP将单播前缀通告到靠近RP的SD-WAN路由器。SD-WAN组播利用单播路由建立转发链,这是传输组播控制平面信息所必需的。
版本 | 发布日期 | 备注 |
---|---|---|
1.0 |
15-May-2025
|
初始版本 |