1/7 Introduction to various Mark Wallis Atlas Gentech o3/May/2o1o LAN configurations for

1/7

Introduction to various

Mark WallisAtlas Gentecho3/May/2o1o

LAN configurations for

2/7

Scenario 1 Standard Topology

Usage: MFIM IP is routable from the clients Network, but iPECS Devices exist on the iPECS `System IP Range`This is the normal installation topology for iPECS.Advantages: Keep Clients IP Address space free. IP Addresses for iPECS Devices & Client network can’t conflict. Local Phontage Devices do not use an IP ChannelDisadvantages: Under some circumstances there can be routing problems between Client PC’s Phontage and iPECS System IP assigned Devices (see note)

LGCM810.10.10.13

MFIM192.168.10.25

Ext 70010.10.10.10

Ext 70110.10.10.11

IP Network

Ext 70210.10.10.12

Client PCsAssigned range192.168.10.100To192.168.10.200

Client ServersAnd fixed peripheralsAssigned Range192.168.10.1To192.168.10.40

Client RoutersAssigned range192.168.10.254To192.168.10.240

iPECS DevicesSystem IP range10.10.10.0/24

iPECS Dual PlaneIP Topology

10.10.10.0/24

192.168.10.0/24MFIM + Client

Network

iPECSDevices

Note:For best voice packet transmission for Phontage Devices (192.168.1.0/24), input a second system IP Address (192.168.1.1 / 255.255.255.0) otherwise in local mode, only 1 Phontage can communicate with the LGCM (although communication with local IP phones is fine)

Broadcast Domain

3/7

Scenario 2 Flat Topology

Usage: MFIM IP and all its devices are routable on (or exist on) the iPECS `System IP Range`. i.e. they are all part of the same IP SubnetThis is common where Local/Remote working is desired (eg for a company VPN)Advantages: All Devices are routable – suits the use of Local/Remote sate for distant devicesDisadvantages: Uses IP Addresses on the clients network (IP Address space can be insufficient, either for the client devices or iPECS devices). Conflicts in IP Addressing with clients devices are possible.

LGCM8192.168.10.33

MFIM192.168.10.20

Ext 700192.168.10.30

Ext 701192.168.10.31

IP Network

Ext 702192.168.10.32




Flat PlaneIP Topology

10.10.10.0/24

192.168.10.0/24

MFIM, iPECS Devices + Client

Network

A Local Remote Network(Routable by a non-NAT/NAPT router)

192.168.20.0/24

Broadcast Domain

4/7

Scenario 3 Concurrent Topology

Usage: MFIM IP and all its devices are on the same IP network, but the Client’s devices are on a different IP network (although the same physical network). A router can be employed to allow routing between the networks.It is generally not employed (except as part of scenario 1).Advantages: Like a VLAN it segregates routable Networks, has low possibility of IP Address conflict, utilises same LAN switch devices for both networksDisadvantages: Unlike a VLAN, it does not help in bandwidth management. A router is required if IP communication between iPECS and Client network is required. Has a large broadcast domain.

LGCM8192.168.33.13

MFIM192.168.33.2

Ext 700192.168.33.10

Ext 701192.168.33.11

IP Network

Ext 702192.168.33.12




iPECS Concurrent IP Topology

192.168.33.0/24

192.168.10.0/24Client

Network

MFIM + iPECSDevices

Broadcast Domain

Physical but not Logical connection

5/7

Scenario 4 VLAN Topology

Usage: MFIM IP and Devices are on a VLAN built for ‘voice’ & inhabit the same IP Network, while the client’s devices inhabit a different ‘data’ VLAN. Again a router can be employed to achieve routing (communication) between the VLANs This is usually part of a Voice QOS solutionAdvantages: VLAN offers very controllable bandwidth management on the LAN, restricts broadcast traffic, Disadvantages: more expensive switches (Smart or managed switches vs. ‘dumb’ switch) , more technically skilled management required.

LGCM8192.168.10.203VLAN 20

MFIM192.168.10.201VLAN 20

Ext 700192.168.10.202VLAN 20

Ext 701192.168.10.205VLAN 20

IP Network

Ext 702192.168.10.204VLAN 20

Client PCsVLAN 1Assigned range192.168.10.100To192.168.10.200

Client ServersAnd fixed peripheralsVLAN 1Assigned Range192.168.10.1To192.168.10.40


iPECS VLAN IP Topology

192.168.10.0/24 VLAN 20

192.168.10.0/24 VLAN 1Client

Network

MFIM + iPECSDevices

Separate Broadcast Domains

6/7

Scenario 5 Separated Topology

Usage: All iPECS Devices are on a Physically separate network!Sometimes employed at sites with an unstable or troublesome Office LAN.Advantages: Provides for absolute bandwidth management, An IP Address conflict with the Client Network is impossible. Similar advantages to VLAN but retains simple management.Disadvantages: more expensive – more switches needed, need a router (or multilayer switch) to connect with client network if connection is desired (e.g. for the Phontage client).

LGCM810.10.10.14

MFIM10.10.10.2

Ext 70010.10.10.11

Ext 70110.10.10.12

IP Network

Ext 70210.10.10.13




iPECS SeparatedIP Topology

10.10.10.0/24

192.168.10.0/24 Client

Network

MFIM + iPECSDevices


7/7

Scenario 7 iPECS Isolated Topology

Usage: MFIM IP and all its devices may be on the same IP network. The major item defining the IP topology is the router in the middle of theIt is not often employed (but sometimes installed to limit the effect of iPECS on a network)Advantages: Like a VLAN it segregates routable Networks and breaks up the broadcast domain (less network congestion)Disadvantages: Requires an additional Router be installed,

LGCM8192.168.1.20

MFIM192.168.1.2

Ext 700192.168.1.10

Ext 701192.168.1.11

IP Network

Ext 702Remote or Local-Remote mode192.168.33.12



Edge Router192.168.33.254

iPECS Isolated Topology

192.168.1.0/24

192.168.33.0/24Client

Network

MFIM + iPECSDevices


Note:The iPECS part of the network is a flat topology, allowing devices outside the Router to connect as local-remote devices (which don’t use an IP channel). The LAN edge router may need a static route to direct voice traffic back to the iPECS router.

‘Internal’ Router

192.168.33.253192.168.1.254

Documents

1/7 Introduction to various Mark Wallis Atlas Gentech o3/May/2o1o LAN configurations for