コンフィグレーションガイド Vol.3

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16.3.2　IPv4マルチキャストエクストラネットの確認

show ip mrouteおよびshow ip mcacheコマンドで，IPv4マルチキャストエクストラネットによってVRF間中継するエントリを参照できます。異なるVRFに中継要求を発行しているエントリはincomingに中継要求先VRF IDが表示されます。また，異なるVRFからの中継要求を許可したエントリはoutgoingにVRF IDが表示されます。

図16-3　show ip mrouteコマンドの実行結果

> show ip mroute vrf all group 224.10.10.10 source 100.100.100.1
Date 20XX/02/20 02:34:22 UTC
Total: 4 routes
VRF: global  Total: 1 route , 1 group , 1 source
 
(S,G) 1 routes  -----------------------------------------------------
Group Address  Source Address  Protocol Flags  Uptime  Expires  Assert
224.10.10.10   100.100.100.1   SM               00:03   03:27    00:00
    incoming: VRF 2     upstream: Extra  reg-sup: 0s
    outgoing: VLAN0010(192.168.10.1)     uptime 00:03  expires 03:27
              VLAN0011(192.168.11.1)     uptime 00:03  expires 03:27
 
VRF: 2  Total: 1 routes, 1 groups, 1 source
 
(S,G) 1 routes  -----------------------------------------------------
Group Address  Source Address  Protocol Flags  Uptime  Expires  Assert
224.10.10.10   100.100.100.1   SM       L       00:03   03:27    00:00
    incoming: VLAN0020(192.168.20.1)     upstream: 192.168.20.2
    outgoing: VLAN0021(192.168.21.1)     uptime 00:03  expires 03:27
              global                     uptime --:--
              VRF 3                      uptime --:--
              VRF 4                      uptime --:--
 
VRF: 3  Total: 1 routes, 1 groups, 1 source
 
(S,G) 1 routes  -----------------------------------------------------
Group Address  Source Address  Protocol Flags  Uptime  Expires  Assert
224.10.10.10   100.100.100.1   SM       L       00:03   03:27    00:00
    incoming: VRF 2     upstream: Extra  reg-sup: 0s
    outgoing: VLAN0030(192.168.30.1)     uptime 00:03  expires --:--
 
VRF: 4  Total: 1 routes, 1 groups, 1 source
 
(S,G) 1 routes  -----------------------------------------------------
Group Address  Source Address  Protocol Flags  Uptime  Expires  Assert
224.10.10.10   100.100.100.1   SM               00:03   03:27    00:00
    incoming: VRF 2     upstream: Extra  reg-sup: 0s
    outgoing: VLAN0040(192.168.40.1)     uptime 00:03  expires 03:27

図16-4　show ip mcacheコマンドの実行結果

> show ip mcache vrf all source 100.100.100.1 group 224.10.10.10
Date 20XX/02/20 02:34:43 UTC
Total: 4 routes
VRF: global  Total: 1 route
- Forwarding entry --------------------------------------------------
Group Address   Source Address  Flags  Uptime  Expires
224.10.10.10    100.100.100.1   D       00:19   03:27
     incoming:
         VRF 2
     outgoing:
         VLAN0010(192.168.10.1)
         VLAN0011(192.168.11.1)
 
VRF: 2  Total: 1 routes
- Forwarding entry --------------------------------------------------
Group Address   Source Address  Flags  Uptime  Expires
224.10.10.10    100.100.100.1   U       00:19   03:27
     incoming:
         VLAN0020(192.168.20.1)
     outgoing:
         VLAN0021(192.168.21.1)
         VLAN0010(192.168.10.1)     global
         VLAN0011(192.168.11.1)     global
         VLAN0030(192.168.30.1)     VRF 3
         VLAN0040(192.168.40.1)     VRF 4
 
VRF: 3  Total: 1 routes
- Forwarding entry ---------------------------------------------------
Group Address   Source Address  Flags  Uptime  Expires
224.10.10.10    100.100.100.1   D       00:19   03:27
     incoming:
         VRF 2
     outgoing:
         VLAN0030(192.168.30.1)
 
VRF: 4  Total: 1 routes
- Forwarding entry ---------------------------------------------------
Group Address   Source Address  Flags  Uptime  Expires
232.0.0.1       10.2.0.100      D       00:18   03:27
     incoming:
         VRF 2
     outgoing:
         VLAN0040(192.168.40.1)

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