Information Systems:Network redesign implementation

Overview

This page is a scratchpad for the re-design of the network, to be done March 3, 2017.

Access, IP Addresses And Naming Convention

• Stack of 4 3com 3870 96 port coresw.unipharm.local 172.30.16.2 Username adminit Password visionit
• 3com 4200 12 port atpsw.unipharm.local 172.30.16.3 Username adminit Password visionit
• 3com 3870 24 port accountingsw.unipharm.local 172.30.16.4 Username adminit Password visionit
• 3com 4200 24 port buyersw.unipharm.local 172.30.16.5 Username adminit Password visionit
• 3com 4200 24 port itsw.unipharm.local 172.30.16.6 Username adminit Password visionit
• 3com 4200 24 port dumpsw.unipharm.local 172.30.16.7 Username adminit Password visionit
• 3com 4200 24 port pickingsw.unipharm.local 172.30.16.8 Username adminit Password visionit
• 3com 4200 24 port wallsw.unipharm.local 172.30.16.9 Username adminit Password visionit
• 3com 4200 24 port receivingsw.unipharm.local 172.30.16.10 Username adminit Password visionit

Telnet connections are available for all of the above switches but be aware that the command line for the 4200 units is difficult to use.

Notes

• 4 x 3870 switches in a stack will serve as the network core. 5th switch to be put in the rack pending another cable, but perhaps shouldn't be stacked anyway (unnecessary overhead for master stacking unit, and we do not need the ports).

• Multi-switch LAG / cross-stack LAG for some of the LAGs, where applicable and where necessary. For example, for a LAG from a server to the stack, each of the two cables coming from the server will be connected to a different switch in the stack.

• VLANs:

• 1 - Main LAN, default VLAN for all ports = untagged
• 2 - Guest VLAN, tagged on access point ports
• 3 - Loomis Intranet, routed through Sophos Interface, tagged on trunk to Narc cage
• 4 - Not Used yet
• 5 - uniPHARM Telus WAN traffic, all ports untagged, switched-only/not routed
• 6 - uniPHARM Terago WAN traffic, all ports untagged, switched-only/not routed
• 7 - Infoblox HA

• Stacking preference: Units in a stack will enter master election mode by default. We can influence the election to select a particular master unit by staggering on the power times, but perhaps the best would be to order them by lowest to highest MAC address, which is the ultimate criterion for a master.

• The following commands are needed to set the IP address of a 4200G switch

• system-view <enter>
• interface vlan 1 <enter>
• ip address xxx.xxx.xxx.xxx mmm.mmm.mmm.mmm <enter>
• save <enter>

• Stacking mode: All switches must be of the same firmware level to enter normal stacking mode. Otherwise, stack will enter special stacking mode, which sounds desirable but actually appears to be a non-functional state whereby only the master unit is up (and thereby indicating

• The following commands will correctly set the NTP clock on the 4200G switches

• system-view
• ntp-service max-dynamic-sessions 100
• ntp-service unicast-server 172.30.18.13
• display ntp-service status

Please be aware that the 4200G switches only use UTC time and there isn't an option to set time zone