7705 SAR Interfaces
32
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
Gigabit Ethernet optical ports offer significant advantages over fast Ethernet ports,
even where lower-speed services are currently offered. With Gigabit Ethernet,
service providers have the opportunity to standardize access infrastructure, ensure
that capacity is available to accommodate growing bandwidth requirements, and
minimize the operational costs associated with future service upgrades to hardware
and software.
3.1.3.1.4 10-port 1GigE/1-port 10GigE X-Adapter Card
There are two versions of the 10-port 1GigE/1-port 10GigE X-Adapter card. Both
versions are identical except that version 2 is equipped with a hardware-based
encryption engine to support features such as IPSec.
When the 10-port 1GigE/1-port 10GigE X-Adapter card (supported only on the
7705 SAR-18) is configured in 10-port GigE mode, 10 SFP ports are available for
fiber SFP transceivers. In this mode, the card supports dual-rate (100 Mb/s and
1000 Mb/s) and Gigabit (1000 Mb/s) fiber connections. The card also supports
synchronous Ethernet timing.
When the 10-port 1GigE/1-port 10GigE X-Adapter card is configured in 1-port GigE
mode, only one SFP+ (port 1) of the 10 ports is active and available for use with fiber
SFP+ transceivers. The card supports 10-Gb/s fiber connections. The card also
supports synchronous Ethernet timing. The 1-port GigE mode is designed for use in
situations where greater processing power and higher throughput capacity are
required.
The 10-port 1GigE/1-port 10GigE X-Adapter card also provides larger table space for
FIBs, ACLs, and so on. The card also supports the full IPv6 subnet range for IPv6
static routes and interface IP addresses. The static route range is from /1 to /128, and
the default route is ::/0. Supported interface IP address prefixes are from /4 to /127,
and /128 on system or loopback interfaces.
Higher limits and full subnet ranges are supported only when all the adapter cards in
a particular node are equipped with hardware for larger table support.
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