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SVI, MAC and ARP

iores
Level 3
Level 3

Hi,

I am a little confused with SVIs.

This is the MAC address table and ARP on a device which is connected to a neighbor:

 

Destination Address Address Type VLAN Destination Port

-------------------  ------------  ----  --------------------

aaaa.bbbb.ccc          Dynamic     200     FastEthernet0/0/1

 

(Internet 80.90.100.200         52   aaaa.bbbb.cccc ARPA   Vlan200)

 

My questions:

1. Does this mean that this device is connected to a neighboring device's port with MAC aaaa.bbbb.cccc?

2. Why is there physical interface in MAC table and SVI in ARP table?

2. Is the link between these two devices a trunk since SVI interface is being used?

3. If it is a trunk, does this mean that the interface with IP 80.90.100.200 is virtual interface (like vlan200)?

P.S. I don't have the whole config, I am just trying to figure it out from this excerpt.

 

 

1 Reply 1

 Does this mean that this device is connected to a neighboring device's port with MAC aaaa.bbbb.cccc? If I am right you meaning the mac appear here is mac of port of mac of device connnect to port, and answer is mac of device connect to port 

2. Why is there physical interface in MAC table and SVI in ARP table? if the device is L3 then it need ARP for inter-vlan 

2. Is the link between these two devices a trunk since SVI interface is being used? NO that not relate to SVI (L3SW) or not, 
it relate to how you config the interconnect interface, are you config it with access or trunk 

3. If it is a trunk, does this mean that the interface with IP 80.90.100.200 is virtual interface (like vlan200)? not always, 
SW1-SW2
SW1 have SVI and need to connect to device in SW2, the arp will show IP-MAC of device in SW2 
or 
SW1 ping to SW2 then the arp will show IP-MAC of SVI of SW2