NOTE
STP のTCN を受信するとEPG 内の同じVLAN ID を持つEP 情報がフラッシュされる。EPG 同じでもVLAN が違えばフラッシュはしない。
タイミング悪くSpine のCOOP から消えているとEP 間で通信不可になる。どのインタフェースでTCN を受信したか確認するにはAPIC からは
fabric XXXX show mcp internal info vlan YYY
XXX はLeaf を指定、複数指定もできる。YYY は具体的なVLAN ID かall
直接Leaf 上で叩く場合はshow 以降で確認できる。
受信後はEP 情報が消え、Leaf201 Eth1/1 から受信していることが確認できる。
Leaf202 側がSVI を示しているのはリモートLeaf スイッチで受信し、転送されてきたことを意味している。
◆Leaf201 受信前
Leaf201# show endpoint vrf TNT-1:VRF-1
Legend:
s - arp H - vtep V - vpc-attached p - peer-aged
R - peer-attached-rl B - bounce S - static M - span
D - bounce-to-proxy O - peer-attached a - local-aged m - svc-mgr
L - local E - shared-service
+-----------------------------------+---------------+-----------------+--------------+-------------+
VLAN/ Encap MAC Address MAC Info/ Interface
Domain VLAN IP Address IP Info
+-----------------------------------+---------------+-----------------+--------------+-------------+
16 vlan-10 547c.69b7.cc1e L eth1/1
TNT-1:VRF-1 vlan-10 192.168.10.1 L eth1/1
+------------------------------------------------------------------------------+
Endpoint Summary
+------------------------------------------------------------------------------+
Total number of Local Endpoints : 1
Total number of Remote Endpoints : 0
Total number of Peer Endpoints : 0
Total number of Peer Rl Endpoints : 0
Total number of vPC Endpoints : 0
Total number of non-vPC Endpoints : 1
Total number of MACs : 1
Total number of VTEPs : 0
Total number of Local IPs : 1
Total number of Remote IPs : 0
Total number All EPs : 1
Leaf201# show mcp internal info vlan 10
-------------------------------------------------
PI VLAN: 16 Up
Encap VLAN: 10
PVRSTP TC Count: 0
RSTP TC Count: 0
Leaf201#
◆Leaf201 受信後
Leaf201# show endpoint vrf TNT-1:VRF-1
Legend:
s - arp H - vtep V - vpc-attached p - peer-aged
R - peer-attached-rl B - bounce S - static M - span
D - bounce-to-proxy O - peer-attached a - local-aged m - svc-mgr
L - local E - shared-service
+-----------------------------------+---------------+-----------------+--------------+-------------+
VLAN/ Encap MAC Address MAC Info/ Interface
Domain VLAN IP Address IP Info
+-----------------------------------+---------------+-----------------+--------------+-------------+
+------------------------------------------------------------------------------+
Endpoint Summary
+------------------------------------------------------------------------------+
Total number of Local Endpoints : 0
Total number of Remote Endpoints : 0
Total number of Peer Endpoints : 0
Total number of Peer Rl Endpoints : 0
Total number of vPC Endpoints : 0
Total number of non-vPC Endpoints : 0
Total number of MACs : 0
Total number of VTEPs : 0
Total number of Local IPs : 0
Total number of Remote IPs : 0
Total number All EPs : 0
Leaf201# show mcp internal info vlan 10
-------------------------------------------------
PI VLAN: 16 Up
Encap VLAN: 10
PVRSTP TC Count: 3
RSTP TC Count: 0
Last TC flush at Thu Aug X XX:XX:XX 2020
on Ethernet1/1
Leaf201#
◆Leaf202 受信前
Leaf202# show endpoint vrf TNT-1:VRF-1
Legend:
s - arp H - vtep V - vpc-attached p - peer-aged
R - peer-attached-rl B - bounce S - static M - span
D - bounce-to-proxy O - peer-attached a - local-aged m - svc-mgr
L - local E - shared-service
+-----------------------------------+---------------+-----------------+--------------+-------------+
VLAN/ Encap MAC Address MAC Info/ Interface
Domain VLAN IP Address IP Info
+-----------------------------------+---------------+-----------------+--------------+-------------+
16 vlan-10 04c5.a442.cc1e L eth1/1
TNT-1:VRF-1 vlan-10 192.168.10.2 L eth1/1
+------------------------------------------------------------------------------+
Endpoint Summary
+------------------------------------------------------------------------------+
Total number of Local Endpoints : 1
Total number of Remote Endpoints : 0
Total number of Peer Endpoints : 0
Total number of Peer Rl Endpoints : 0
Total number of vPC Endpoints : 0
Total number of non-vPC Endpoints : 1
Total number of MACs : 1
Total number of VTEPs : 0
Total number of Local IPs : 1
Total number of Remote IPs : 0
Total number All EPs : 1
Leaf202# show mcp internal info vlan 10
-------------------------------------------------
PI VLAN: 16 Up
Encap VLAN: 10
PVRSTP TC Count: 0
RSTP TC Count: 0
Leaf202#
◆Leaf202 受信後
Leaf202# show endpoint vrf TNT-1:VRF-1
Legend:
s - arp H - vtep V - vpc-attached p - peer-aged
R - peer-attached-rl B - bounce S - static M - span
D - bounce-to-proxy O - peer-attached a - local-aged m - svc-mgr
L - local E - shared-service
+-----------------------------------+---------------+-----------------+--------------+-------------+
VLAN/ Encap MAC Address MAC Info/ Interface
Domain VLAN IP Address IP Info
+-----------------------------------+---------------+-----------------+--------------+-------------+
+------------------------------------------------------------------------------+
Endpoint Summary
+------------------------------------------------------------------------------+
Total number of Local Endpoints : 0
Total number of Remote Endpoints : 0
Total number of Peer Endpoints : 0
Total number of Peer Rl Endpoints : 0
Total number of vPC Endpoints : 0
Total number of non-vPC Endpoints : 0
Total number of MACs : 0
Total number of VTEPs : 0
Total number of Local IPs : 0
Total number of Remote IPs : 0
Total number All EPs : 0
Leaf202# show mcp internal info vlan 10
-------------------------------------------------
PI VLAN: 16 Up
Encap VLAN: 10
PVRSTP TC Count: 3
RSTP TC Count: 0
Last TC flush at Thu Aug X XX:XX:XX 2020
on Vlan15
Leaf202#
REFERENCE
Connecting Application Centric Infrastructure (ACI) to Outside Layer 2 and 3 Networks
STP Topology Change Notification (TCN) Snooping
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