Cisco ACI and traditonal switching - Tshooting Logs

netbeginner · ‎08-13-2020

Hi All,

Hope all are doing good....!

Having a query related to Cisco ACI logs related to VMotion (VM movement between ESXi host) or any issue in switching , VLAN movement at backend.

In traditional switching we can easily (sort of) able to get the change in TCN or any Vmotion or MAC flapping, VLAN Information . But i do'nt find any relevant similar logs on ACI APIC GUI which help in investigation such issues.

Please advise.

Regards

***

Sergiu.Daniluk · ‎08-13-2020

Hi @netbeginner

You have several options for investigating endpoint moves:

1. Built-in APIC EP tracker, located in Operations > EP tracker

2. Enhanced EP tracker. This is an app available on: https://dcappcenter.cisco.com/enhancedendpointtracker.html

3. Good old CLI style, directly on the Leaf switch. Here you will need to look over the EPM and EPMC logs:

/var/log/dme/log/epm-trace.txt

/var/log/dme/log/epmc-trace.txt

One command which can be useful:

Leaf101# cat /var/log/dme/log/epmc-trace.txt | grep -A 5 -B 1 "optype.*dead.0001"
EP request:
optype = UPD; mac = 0000.dead.0001; num_ips = 0
vlan = 32; epg_vnid = 10092; bd_vnid = 16744320; vrf_vnid = 2261000
ifindex = 0x1a016000; tep_ip_tun_ifindex = 0; sclass = 16386
flags = local|MAC|sclass|timer|
timestamp = 01/04/1970 05:33:33.389619
[2020 Aug 10 18:21:37.697096980:8727:epmc_pd_bcm_learn_ack:947:t] Acking BCM learn msg with num_entries = 1 
--
EP request:
optype = ADD; mac = 0000.dead.0001; num_ips = 1
ip[0] = 192.168.101.1; ip_flags = 
vlan = 32; epg_vnid = 10092; bd_vnid = 16744320; vrf_vnid = 2261000
ifindex = 0x1a016000; tep_ip_tun_ifindex = 0; sclass = 16386
flags = local|IP|MAC|sclass|timer|
timestamp = 01/04/1970 05:36:19.221828
--
EP request:
optype = UPD; mac = 0000.dead.0001; num_ips = 0
vlan = 32; epg_vnid = 10092; bd_vnid = 16744320; vrf_vnid = 2261000
ifindex = 0x1a016000; tep_ip_tun_ifindex = 0; sclass = 16386
flags = local|MAC|sclass|timer|
timestamp = 01/04/1970 05:36:19.405245
[2020 Aug 10 18:24:23.712721198:9051:epmc_pd_bcm_learn_ack:947:t] Acking BCM learn msg with num_entries = 1

Hope it helps!

Stay safe,

Sergiu

netbeginner · ‎08-13-2020

Hi MSD,

Thanks Surely it helps...