I have a small network of 4 x 3750s running routing (OSPF) which contain all company firewalls. It bridges internal trusted corporate networks (depots etc) to external untrusted networks (Internet/Datacenter networks). It sees a fairly high level of traffic running through it (it gets forwarded to firewalls at gig speed).
OSPF is costed to remove asymetric routing so one 3750 is acting as primary and does most of the work. The 3750s are in area 0, and all other areas are summarised to some degree. However, CPU is running high on the 3750 when looking at the history at times:
PPFX_X37_274#sh ip ro summ
IP routing table name is Default-IP-Routing-Table(0)
My question is - although the average is around 26% the 72hour picture would suggest that CPU is running at 100% at times. Is this an imminent concern that needs re-designing, or is this normal behaviour (SPF running for instance) that is manageable?
Can you also have a look at show processes cpu sorted ? Try out also 1min and 5min keywords to see what processes tend to create a long-standing load on your CPU. This command should place the most CPU-intensive tasks at the top of the listing so you can see what process is consuming most of your CPU time.
Having a load in the range of 26% is, in my personal opinion, nothing to be especially concerned about, but I do not quite like the spikes up to 100%. They need more investigation indeed.
This may look like trying to solve your issue quickly but I really recommend going through the following documents:
Cisco Champion Radio · S7|E30 Taming Your AI/ ML Workloads with Kubeflow
As organizations increasingly introduce machine learning (ML) capabilities to their existing products, their artificial intelligence (AI) projects and operations complexity g...
Cisco IOS-XE 17.3.1 – Catalyst Switching Updates
Table of Contents
Hardware Additions since IOS-XE 17.2.1
Key Summary Features
Platform and Infra Features
High Availability Features
Routing / MPLS / VPN Features
Hi Everyone,I have 2 queries1. After we configure the IPSec VPN in a Cisco Router, how do we identify and check that the traffic is flowing through the tunnel? Are there any commands and ways to find it out?2. What are some of t...
Cisco Champion Radio · S7|E29 Increase Visibility and Enhance Security with Cisco AI Endpoint Analytics
Cisco is on a journey to making networking smarter with artificial intelligence and machine learning. The latest stop in this journey, Cisco AI...