Tiered Networks 13-9
IGX Routing Hubs in a Tiered Network
IGX Routing Hubs in a Tiered Network
With tiered networks, IGX nodes on the edge of the network are configured as interface shelves and
are connected to IGX nodes configured as router hubs. The interface shelves allow the network to
support additional voice, data and frame relay connections without adding additional routing nodes.
An example of 3-segment voice and data connections via an IGX interface shelf and IGX routing
hubs is shown in (Figure 13-3). An example of a frame relay connection via an IGX interface shelf
and routing hubs is shown in (Figure 13-4).
Figure 13-3 IGX Shelves and Routing Hubs, Voice and Data Connections
ATM
routing
network
IGX
hub
BTM-E1
3 segment
voice and data
connections
IGX
hub
IGX
switch
BPX
switch
Cisco StrataView Plus
SNMP
--voice and data
conns on
interface shelves
--CBR conn for
middle segment
S6414
BTM-E1
The IGX voice card is the CVM or UVM.
The IGX data cards are the LDM and HDM.
The trunk card on both ends of the IGX
feeder trunk is the BTM-E1, T3, or E3.
Legend
Depicts an IGX
interface shelf
IGX
shelf
IGX
hub
Depicts an IGX
routing hub
IGX
switch
Depicts an IGX
routing node
IGX
shelf
IGX
shelf
IGX
shelf
IGX
shelf
IGX
shelf
