Additional ethernet card for 1721

Hello

I have a 1721 router with 1 fastethernet and 1 T-1 module.
I have an empty slot and I'd like to add another fastethernet OR ethernet card. what are my options for both fastethernet and ethernet?

sh ver:

Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-Y-M), Version 12.3(1a), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Fri 06-Jun-03 20:01 by dchih
Image text-base: 0x80008120, data-base: 0x809DA464

ROM: System Bootstrap, Version 12.2(7r)XM2, RELEASE SOFTWARE (fc1)

FENIX1721 uptime is 1 day, 1 hour, 10 minutes
System returned to ROM by power-on
System image file is "flash:c1700-y-mz.123-1a.bin"

cisco 1721 (MPC860P) processor (revision 0x300) with 54299K/11237K bytes of memory.
Processor board ID FOC0748137Y (2896220532), with hardware revision 0000
MPC860P processor: part number 5, mask 2
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
1 Serial(sync/async) network interface(s)
32K bytes of non-volatile configuration memory.
32768K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102
eggster34Asked:
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JFrederick29Connect With a Mentor Commented:
Alternatively you could add a WIC-4ESW to the router which basically integrates a multilayer switch.  You could create VLAN's and SVI's (VLAN interfaces) to route between.

http://www.cisco.com/en/US/products/hw/routers/ps221/products_data_sheet09186a00801c749d.html
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JFrederick29Connect With a Mentor Commented:
You can add a WIC-1ENET to the 1721 to add a 10Mbps Ethernet interface.

http://www.cisco.com/en/US/products/hw/routers/ps221/products_data_sheet09186a0080088714.html
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eggster34Author Commented:
are there any single-port 100 mbit interfaces?
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JFrederick29Commented:
Nope, not that I have ever seen.  The WIC-1ENET would be perfect for a DSL connection with an ethernet handoff if that is what you will be using it for.
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calvinetterConnect With a Mentor Commented:
Exactly right - none of the 1700 series support a single FastEthernet interface for WAN interfaces.   As JFrederick29 mentioned, a WIC-4ESW or WIC-1ENET would be the way to go.

  See also "Table 2 WAN Support for the Cisco 1721":
http://www.cisco.com/en/US/products/hw/routers/ps221/products_data_sheet09186a00800920ec.html

>are there any single-port 100 mbit interfaces?
  Yes, there's the network module NM-1FE-TX (& variations thereof), which isn't supported on the 1700 series.

cheers
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eggster34Author Commented:
Many thanks to all of you.
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calvinetterCommented:
No problem!
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