Tx-Bcst is 100 % + port channel + nexus 5596

[kmothukuri]

HI All ,

Arista switches are connected to nexus 5k switches and am seeing Tx-Bcst as 100 % on port 1/39 as below.

show port-channel traffic interface port-channel 38
ChanId      Port Rx-Ucst Tx-Ucst Rx-Mcst Tx-Mcst Rx-Bcst Tx-Bcst
------ --------- ------- ------- ------- ------- ------- -------
   38  Eth1/36  28.17%  25.48%  23.76%  32.78%  27.60%    0.0%
   38   Eth1/37  21.54%  24.88%  19.64%   0.07%  22.10%    0.0%
   38   Eth1/38  24.72%  25.77%  38.61%   0.07%  29.92%    0.0%
   38   Eth1/39  25.55%  23.85%  17.97%  67.06%  20.36% 100.00%

I would like to know the reason for 100  % of Tx-Bcst ..any comments which shows the culprit for broadcast traffic ?  

out of four bundled links why are we seeing Tx-Bcst as 100 only on Eth 1/39 ? 

[mojafri]

HI @kmothukuri,

At the same time what you see in below output: 

#show int e1/36 - 39 | in broadcast

Regards,

MJ

[kmothukuri]

Hi Mojafri ,

here is the show int eth 1/36 - 39 | in broadcast output.

# sh int eth 1/36 - 39 | in broadcast
7649896549 unicast packets 1053805 multicast packets 1850580 broadcast packets
5572185826 unicast packets 14283 multicast packets 0 broadcast packets
7446695445 unicast packets 1344418 multicast packets 1736082 broadcast packets
5935971829 unicast packets 14283 multicast packets 0 broadcast packets
7990893416 unicast packets 2094362 multicast packets 2232599 broadcast packets
6685141808 unicast packets 16307 multicast packets 0 broadcast packets
6524484933 unicast packets 1503192 multicast packets 1915603 broadcast packets
6074553763 unicast packets 13058606 multicast packets 7157779 broadcast packets

# sh int eth 1/36 | in broadcast
7650806318 unicast packets 1053991 multicast packets 1850859 broadcast packets
5573137552 unicast packets 14284 multicast packets 0 broadcast packets

# sh int eth 1/37 | in broadcast
7447143508 unicast packets 1344927 multicast packets 1736477 broadcast packets
5937680491 unicast packets 14285 multicast packets 0 broadcast packets

# sh int eth 1/38 | in broadcast
7991513160 unicast packets 2095137 multicast packets 2233216 broadcast packets
6686783035 unicast packets 16309 multicast packets 0 broadcast packets

# sh int eth 1/39 | in broadcast
6525077805 unicast packets 1503577 multicast packets 1916150 broadcast packets
6076812945 unicast packets 13061602 multicast packets 7159326 broadcast packets

Many Thanks..

[Spade101]

I'm seeing this as well on my nexus 9k. has anyone figured out why?

[Sergiu.Daniluk]

Better open a new thread for this, so if the solution is found, to be able to accept it as solution and be visible for everyone.

Stay safe,

Sergiu