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All CCTV cameras are very slow

Publication Date:  2019-04-16 Views:  114 Downloads:  0

Issue Description

All CCTV cameras are very slow 

Alarm Information

High output utiization on almost all interfaces connected to cameras



Handling Process

- The cctv server have gig card / and was connecting to Ethernet port so we advised to move the server to gig interface but same issue happened .

- We checked the access and core switches for the cameras slowness issue and we found high output utilization on all interfaces :



-A lot of multicast discarded :




- We enabled the igmp-snooping under the VLAN 175 (CCTV VLAN) on core switch as CCTV use multicast :

[vlan-175]igmp-snooping enable

- And now traffic is normal


Root Cause

- Server connected to Ethernet ports .

IGMP-snooping was not enabled under the CCTV vlan

Solution

We enabled the igmp-snooping under the VLAN 175 (CCTV VLAN) on core switch as CCTV use multicast :

[vlan-175]igmp-snooping enable

END