Справочник Пользователя для iskratel si2000 callisto821 router
SI2000 Callisto821+ Router Users Guide
88/107
figure 70: The WAN connection Edit ATM channel page.
Change the values in Tx VCi, Tx VPi, Rx VCi and Rx VPi arrays to the desired values. The Tx VCi, Rx VCi
and Tx VPi, Rx VPi must match.
7.1.3 Multiplexing
There are two conventions to identify what protocols the virtual circuit (VC) is carrying. Be sure to use the
multiplexing method required by your ISP.
multiplexing method required by your ISP.
VC-based multiplexing
In this case, by prior mutual agreement, each protocol is assigned to a specific virtual circuit, for example,
VC1 carries IP, etc. VC-based multiplexing may be dominant where dynamic creation of large numbers of
ATM VCs is fast and economical.
VC1 carries IP, etc. VC-based multiplexing may be dominant where dynamic creation of large numbers of
ATM VCs is fast and economical.
LLC-based multiplexing
In this case one VC carries multiple protocols identifying information being contained in each packet header.
Despite the extra bandwidth and processing overhead, this method may be advantageous if it is not practical
to have a separate VC for each carried protocol, for example, if charging heavily depends on the number of
simultaneous VCs.
Despite the extra bandwidth and processing overhead, this method may be advantageous if it is not practical
to have a separate VC for each carried protocol, for example, if charging heavily depends on the number of
simultaneous VCs.