Category Archives: Audit and Checking

NETWORK AUDITS: WHAT YOU NEED TO KNOW

NETWORK AUDITS: WHAT YOU NEED TO KNOW
by eyvonne.sharp in Geek Speak

https://thwack.solarwinds.com/community/solarwinds-community/geek-speak_tht/blog/2018/02/07/network-audits-what-you-need-to-know?utm_content=buffer84b3b&utm_medium=social&utm_source=linkedin.com&utm_campaign=buffer

Difference between a Lan, IP base image and an IP services image.

Different Business use Different IOS:

·LAN Lite—small business
·LAN Base– small-to-medium sized business
·IP Base – medium-large business
·IP Service — large-scale operations managing vast networks between many offices

The Features of Four Editions:

LAN Lite:
·Entry-level
·Only bundled with small-business hardware
·Only supports Layer 2 routing
·A bare minimum of VoIP enhancement and security services

LAN Base:
·A good choice for small-to-medium sized businesses
·Enterprise access Layer 2 and Layer 3 routing
·Ingress policing, Auto QOS, and DSCP mapping.

IP Base:
·Medium-large business
·Complete access Layer 2 and Enterprise access Layer 3 routing
·Advanced quality of service (QoS), rate limiting, access control lists (ACLs),
basic static and Routing Information Protocol (RIP) functions.

IP Services:
·Large-scale business
·Complete access Layer 2 and Complete access Layer 3 routing
·Dynamic IP routing protocols (Open Shortest Path First (OSPF), BGPv4, Enhanced
Interior Gateway Routing Protocol (EIGRP)

http://nhprice.com/comparison-of-cisco-ios-image.html
https://info.hummingbirdnetworks.com/blog/difference-between-cisco-ios-versions

IOSios2

How Healthy is your Existing Network? By ajs

http://www.ajsnetworking.com/how-healthy-is-your-existing-network/

How Healthy is your Existing Network?

Cisco provides us with a nice starting point for analyzing the health of our existing network as we Plan for redesigns. Check it out:

Ethernet segments should not feature a sustained utilization of 40% or higher
All Ethernet segments should be switched – no shared segments (hub-based)
No WAN links should feature a sustained utilization of 70% or higher
Response times should be generally less than 100 ms
LAN response times should generally be 2 ms
No segments have more than one cyclic redundancy check (CRC) error per million bytes of data
No segments should have more than one CRC (cyclic redundancy check) error per million bytes of data
No segments should have more than 20 percent multicast or broadcast traffic
For Ethernet segments, there should be less than .1 percent collisions over 5 minute intervals
CPU utilization should not exceed 75%
The number of output queue drops should not exceed 100 in an hour
The number of input queue drops should not exceed 50 in an hour
The number of buffer misses should not exceed 25 in an hour
The number of ignored packets should not exceed 10 in an hour