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New Member

async

hi,

i am a little bit confiused whith ne kind of interfaces,

is there syn an asyn serial interface, or it depends on the way u configure them?

for exemple, i want to setup a remote access to my server site whith a asyncrounous modem, what kind of serial interface should i have?

thanks.

  • Other Network Infrastructure Subjects
1 REPLY
New Member

Re: async

Generally, Cisco's serial interfaces can be summed up to three major types. As you've mentioned, there are synchronous-only serial interfaces. These can be connected to a CSU/DSU and can support up to E1 speeds. A variety of the sync serial is the high-speed serial interface or HSSI. This can operate up to 52Mbps.

Then there are serial interfaces that are software-configurable to operate in sync or async. These types however, can operate only at low-speeds (128k sync or 115k async). These are typically found on 1600 series routers and 2600/3600 series network modules (ex. NM-8 A/S)

The third type is the pure async, much like the aux port on most cisco boxes.

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