Most input/output adapters (IOA) provide the physical interconnection to the network via small form-factor pluggable transceivers (SFPs). You insert each IOA into the passive midplane in the rear of the chassis, directly behind a line module. See Figure 2 for IOA location in the router and Figure 8 for a representative IOA model. See Installing and Removing SFPs and the E120 and E320 Module Guide for information on SFPs.
For a list of hot-swappable IOAs, see Table 5.
Figure 8: Representative IOA
An IOA bracket can be installed to create upper and lower IOA bays (E320 router) or left and right IOA bays (E120 router), enabling you to use two IOAs in the same slot. This architecture enables you to combine different IOA types in the same slot and to support oversubscribed configurations.
Restrictions exist concerning which IOAs can be combined in the same slot and which bay (upper or lower, left or right) they may be installed in. See IOA Slot Combinations and the E120 and E320 Module Guide for information. For details about installing IOAs, see Installing Modules.
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