ASR1006 MAC Addresses on ARP Table are not in Bridge-Domain MAC List

[bandararmc]

Hello,

I am trying to trace a IP/MAC address. 

I can see this mac address is receiving for a BDI (100). 

*********************************

XXXX#show arp 192.168.100.1
Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.100.1 6 aaaa.bbbb.cccc ARPA BDI100

*********************************

This BDI is configured on several interfaces.

So I tried to check "show bridge-domain 100" to find out the exact interface receiving this mac. But this mac is not an output for BDI 100. 

***********************************

XXXX#show bridge-domain 100 | in AAAA:BBBB:CCCC

(empty) 

***********************************

Please help if any of you have an idea about this  output. 

Thank you 

[Georg Pauwen]

Hello,

hard to say, maybe this is a secured MAC address. Does anything show up with:

--> show bridge-domain 100 mac security address

Also, the IP address 192.168.100.1, is that the default gateway for a subnet ? What device does this IP address belong to ?

[bandararmc]

Hello Georg, 

Thank for your reply. 

Security MAC is not configured here. 

************************************

CORE1#show bridge-domain 100 mac security address
^
% Invalid input detected at '^' marker.

************************************

192.168.100.1 is not  the gateway for BDI 100. I am actually trying to trace the device. This issue is not only for this IP. 

show arp bdi 100 ---> 224 MAC/IP addresses

show bridge-domain 100 --> only 64 MAC output 

I just want to trace some IPs destination/device using the receiving interfaces. But here I can not find the source interface for these IPs. 

Thank you 

[paul driver]

Hello

Perform the following on the core switches then downstream towards the source

show mac-address address AAAA:BBBB:CCCC

[bandararmc]

Hello Pual,

Thank you for the reply. 

This network is a complex one. there are few of switches and some servers connected this router. 

I tried few switches and for those switches, the source is coming from this router. 

Is their any way to find the source interface directly from this router?

Thank you.. 

[mlund]

Hi

The mac address table has a timeout of 5 minutes, but the arp table has a timeout of hours. So try to first ping the address, then check the mac address table.

/Mikael

[bandararmc]

Hi Mikael, 

Thank you for your reply. 

I did the ping first. But still I could not find the that mac address on " show bridge-domain bdi 100" output. 

Thank you