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The E7-2 supports 2.5 Gbps pluggable module interfaces in the SFP ports of the 10GE-
4, GPON-4, VDSL2-48C, and VDSL2-48 cards.
The 2.5GE interfaces support equivalent functions and networking protocols as the GE
and 10GE interfaces.
Auto-negotiation is supported over twisted pair 1000BASE-T links and some fiber
1000BASE-X links. It is not supported over 2.5G or 10G links.
When connecting to devices that do not support auto-negotiation, provision the E7 port
manually for the speed, duplex, and flow control options that are compatible with the
options supported by the other side.
Forced Speed Settings Supported
10M
100M
1G
2.5G
10G
Copper modules in SFP/CSFP ports
Direct-Attach cables in SFP/CSFP ports
Direct-Attach cables in SFP+ port
Copper modules in SFP+ ports
1G fiber modules in SFP or SFP+ ports
2.5G fiber modules in SFP ports
10G fiber modules in SFP+ ports
X
X
X
X
X
X
X
X
X
X
The following rules apply for stand-alone E7 shelves and Modular Chassis Controller
(MCC) shelves:
SFP and SFP+ Network ports; support protection protocols; ERPS, LAG, RSTP:
Transport ports; ERPS or RSTP protection
Trunk/Edge ports; RSTP and/or LAG protection, towards the edge
switch/router or subtended device
SFP sockets:
1GE or 2.5GE data rate modes
At 2.5GE data rate mode, supported port roles are
Stacking/Edge/Trunk/Access
At 1G data rate mode; supported port roles are Edge/Trunk/Access
SFP+ sockets:
1GE or 10GE data rate modes
At 10G data rate mode; supported port roles are Stacking/Edge/Trunk/Access
At 1G data rate mode; supported port roles are Edge/Trunk/Access
Support for subscriber DSL drops; supported port roles are Access
The following rules apply for Modular Chassis Expansion (MCE) shelves:
SFP and SFP+ Access ports; no support for protection protocols
Aggregation; unprotected pt-to-pt links to subtended devices from SFP and
SFP+ sockets
