10-24-2013 07:34 AM - edited 03-07-2019 04:12 PM
Hi all,
I'm practicing STP. What i have done is i disabled STP on both of my switches so the network went down because of the MAC table instabiity due to which broadcast storm occured and whole network went down.
Now what i'm trying to do is i want to bring the network up without enabling STP. So what i had done is i configued all the mac address on both switches perfectly but still the networking is not working.
I'm attaching my toplogy pic. Can someone please help me ?
Switch1's MAC table:
Switch1#show mac-address-table
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
1 0001.979c.9150 STATIC Fa0/10
1 0030.f236.73b8 STATIC Fa0/1
1 0050.0f67.55be STATIC Fa0/11
1 0090.0c31.164e STATIC Fa0/2
1 0090.2ba9.e017 STATIC Fa0/2
1 0090.2ba9.e018 STATIC Fa0/1
---------------------------------------------------------------------------------------------------------------
Switch2's MAC table:
Switch2#show mac-address-table
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
1 0001.979c.9150 STATIC Fa0/24
1 0030.f236.73b8 STATIC Fa0/1
1 0050.0f67.55be STATIC Fa0/23
1 0060.2f5d.d701 STATIC Fa0/24
1 0060.2f5d.d702 STATIC Fa0/23
1 0090.0c31.164e STATIC Fa0/2
Regards,
Chandu
10-24-2013 08:04 AM
Hi,
broadcast frames will always be flooded so one ARP request will still generate a broadcast storm which will not be mitigated by STP as you have disabled it. You should never disable STP on switches.
Regards
Alain
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10-24-2013 08:09 AM
Hi Cadet,
Actually as per my knowledge switch will flood if and only if it doesn't know the MAC address of a particular thing.
Here i configured MAC addresses of all the devices that are connected and active in the network. Then where is the possibilty for the switch to flood frames.
Regards,
Chandu
10-24-2013 08:26 AM
Hi,
broadcast are always flooded because they can never be source MACs but only destination MACs.
ARP requests are broadcast frames so they will be flooded.
Regards
Alain
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10-24-2013 08:28 AM
Thanks Alain.
So if i configure ARP table statically. Will it work ?
REgards,
Chandu
10-24-2013 08:30 AM
Hi,
Yes it should work with static arp entries on the hosts but this is really not a good wqy of doing things.
Regards
Alain
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10-24-2013 08:45 AM
Actually i'm doing trial and error. However no one will implement these type of configuration on real networks i guess.
I'll get you back after configuring static ARPs.
Thanks a lot for your info.
Regards,
Chandu
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