Difference Between Interface Cards

[Anand Sharma]

Hello,

Can anyone describe the differences between the following interface cards as VWIC,WIC,HWIC and EHWIC?

[Mark Malone]

Hi

vwic voice wan interface card to support voice services such as ISDN , FXO FXS

wic standard wan interface card like serial interfaces for data traffic

hwic high speed LAN switch module for a router , adds switching functions o the router

ehwic same thing as hwic just an enhanced version of hwic , the newer type , used in ISRG2 routers  

[Anand Sharma]

Thanks Mark,

Could you please elaborate the same or share a document/link for the same.

[Mark Malone]

if you want specific detail on what each wic does you need to access there data sheets online

to do this get the full part name like VWIC2-2MFT-T1/E1 put it into Google with datasheet it will pull up the specific info

VWIC2-2MFT-T1/E1 data sheet

so when I did it for that vwic I go the below which gives all the details regarding that specific vwic , you need to specify the actual part to get the info as there is diff sheets for every type and there is quite a few different types

http://www.cisco.com/c/en/us/products/collateral/routers/3800-series-integrated-services-routers-isr/datasheet-c78-733859.html

[Anand Sharma]

Is there any difference from speed, bandwidth and throughput prospect?

[Mark Malone]

Yes there is the EHWIC would be a higher speed than the HWIC but it depends on what type of card it is what platform it is in to know the actual throughput of it , as the link I provided in last post shows the throughput for those specific cards but as you see E1 nd T1would be different as there different line types in US an EU , generally voice wics have same throughput depending on the line but the variations of the type of vwic base on where and what it can be used on

http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/high-speed-wan-interface-cards/qa_c67-660125.html

Q. What is the maximum throughput on the Gigabit Ethernet EHWIC?

A. The maximum theoretical throughput for the EHWIC-1GE-SFP-CU is 800 Mbps. Actual performance is based on the router's CPU and is dependent on the router model.

[Adriana7]

Hi Mark,

Yeah, it looks simple, but if I look at the HWIC for routers, I can't find any additional LAN ports. And I have read that these HWICs and eHWICs have more additional ports. Now - I saw some double eHWICs. OK, they had 8 LAN ports but no serial port. How do they connect to the WAN?

Can somebody answer me?

It would be helpful for many of us.

Thank you in advance.

Adriana

[Joseph W. Doherty]

"How do they connect to the WAN?"

Through the router (to another module with a serial port), itself, unless, perhaps, your "WAN" connection is on the same module and it's a L3 switch module.

Understand, having an "excess" of LAN ports, on a small router, is basically to avoid the need of also having a small standalone switch.  So, just as you might have a small router with a single Ethernet port connecting to a small switch, internally, the router connects to a small switch module.  If both cases, the small router often doesn't have the capacity to even support the throughput of a single gig port, and probably for that reason, often the router modules themselves don't have an "internal" module connection that supports gig bandwidth.

[binisol71]

Hi Guys, Can i Use EHWIC-4ESG for WAN Redundancy on Cisco 1941 Router Cause i already configured G0/0 For my Main WAN Connection and G0/1 for my LAN but i need a redundant WAN From my ISP and they asked for two WAN Ports?