【解決】PIM-DM【戒め】
午後の私宛
基本設定
マルチキャストのルーティングがわかってない
vIOS1=>vIOS3のマルチキャスト239.1.1.5が届かない
原因はvIOS2でマルチキャストが破棄されている。
そもそも何を参考にしてマルチキャストルーティングが行われるかがわかっていない。ユニキャストならルーティングテーブルだけど…。
vIOS2: showいろいろ
vIOS2#show ip igmp groups
IGMP Connected Group Membership
Group Address Interface Uptime Expires Last Reporter Group Accounted
239.1.1.5 GigabitEthernet0/0 00:50:48 00:02:17 172.16.1.1
224.0.1.40 GigabitEthernet0/1 00:37:25 00:02:33 10.0.0.1
224.0.1.40 GigabitEthernet0/0 00:59:49 00:02:18 172.16.1.254
vIOS2#show ip igmp interface
GigabitEthernet0/0 is up, line protocol is up
Internet address is 172.16.1.254/24
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 2 joins, 0 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 172.16.1.254 (this system)
IGMP querying router is 172.16.1.254 (this system)
Multicast groups joined by this system (number of users):
224.0.1.40(1)
GigabitEthernet0/1 is up, line protocol is up
Internet address is 10.0.0.2/24
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 1 joins, 0 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 10.0.0.2 (this system)
IGMP querying router is 10.0.0.1
No multicast groups joined by this system
vIOS2#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
10.0.0.1 GigabitEthernet0/1 00:43:16/00:01:42 v2 1 / S P G
vIOS2#show ip mroute summary
IP Multicast Forwarding is not enabled.
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
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
vIOS2#show ip mroute
IP Multicast Forwarding is not enabled.
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
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
vIOS2#show ip mroute active
Use "show ip mfib active" to get better response time for a large number of mroutes.
Active IP Multicast Sources - sending >= 4 kbps
vIOS2#vIOS1: show
vIOS1#show ip igmp groups
IGMP Connected Group Membership
Group Address Interface Uptime Expires Last Reporter Gd
224.0.1.40 GigabitEthernet0/0 00:49:32 00:02:35 10.0.0.1⇒vIOS2のshow ip igmp groupsにはしっかり239.1.1.5が登録されてるんだけど、それを参照してルーティングしてくれないのかなあ。
時間の壁
解決編
vIOS1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
vIOS1(config)#ip multicast routing
^
% Invalid input detected at '^' marker.
vIOS1(config)#ip multicast-routing
vIOS1(config)#end
vIOS1#pin
*May 27 02:03:20.377: %SYS-5-CONFIG_I: Configured from console by consoleg
vIOS1#ping 239.1.1.5
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 239.1.1.5, timeout is 2 seconds:
Reply to request 0 from 172.16.1.1, 32 ms(config)#ip multicast-routingでマルチキャストルーティングを有効にしてなかっただけだわ！！！！！
いや～、相変わらずちゃんとテキストを読んでない。読み飛ばす癖をいい加減に治したい。
まあ苦労して得た答えは一生忘れないっていうから結果オーライってことで…