Cabletron Systems CSX400-DC User Manual
About the CSX400
CSX400 and CSX400-DC User’s Guide 13
In half-duplex operation, the authenticator device challenges the peer device by generating a
CHAP challenge, and the challenge contains an MD5 algorithm with a random number that has
your encrypted password and system name. The peer device then applies a one-way hash
algorithm to the random number and returns this encrypted information along with the system
name in the CHAP response. The authenticator then runs the same algorithm and compares the
result with the expected value. This authentication method depends upon a password or secret,
known only to both ends locally.
CHAP challenge, and the challenge contains an MD5 algorithm with a random number that has
your encrypted password and system name. The peer device then applies a one-way hash
algorithm to the random number and returns this encrypted information along with the system
name in the CHAP response. The authenticator then runs the same algorithm and compares the
result with the expected value. This authentication method depends upon a password or secret,
known only to both ends locally.
Full-duplex operation places an additional step to the half-duplex operation that mirrors the
operation discussed above for a peer to validate the authenticator. The peer device challenges the
authenticator by generating a CHAP challenge, and the authenticator returns a CHAP response.
operation discussed above for a peer to validate the authenticator. The peer device challenges the
authenticator by generating a CHAP challenge, and the authenticator returns a CHAP response.
The peer device challenges the authenticator device by generating a CHAP challenge, and the
challenge contains an MD5 algorithm with a random number that has your encrypted password
and system name. The authenticator device then applies a one-way hash algorithm to the random
number and returns this encrypted information along with the system name in the CHAP response.
The peer device then runs the same algorithm and compares the result with the expected value.
This authentication method depends upon a password or secret, known only to both ends locally.
challenge contains an MD5 algorithm with a random number that has your encrypted password
and system name. The authenticator device then applies a one-way hash algorithm to the random
number and returns this encrypted information along with the system name in the CHAP response.
The peer device then runs the same algorithm and compares the result with the expected value.
This authentication method depends upon a password or secret, known only to both ends locally.
LQM
Link Quality Monitoring (LQM) is a link control mechanism used with PPP to determine when
and how often a link is dropping data in units of packets and octets. Link Quality Monitoring
accomplishes this by providing Link-Quality-Reports to determine if the quality of the link is
adequate for operation. Link Quality Monitoring provides separate measurements for both
incoming and outgoing packets that are communicated to both ends of the link. The PPP LQM
mechanism carefully defines the Link-Quality-Report packet formats, and specifies reference
points for all data transmission and reception measurements. The LQM implementation maintains
successfully received packet and octet counts, and periodically transmits this information to its
peer using Link-Quality-Report packets.
and how often a link is dropping data in units of packets and octets. Link Quality Monitoring
accomplishes this by providing Link-Quality-Reports to determine if the quality of the link is
adequate for operation. Link Quality Monitoring provides separate measurements for both
incoming and outgoing packets that are communicated to both ends of the link. The PPP LQM
mechanism carefully defines the Link-Quality-Report packet formats, and specifies reference
points for all data transmission and reception measurements. The LQM implementation maintains
successfully received packet and octet counts, and periodically transmits this information to its
peer using Link-Quality-Report packets.
Multilink Protocol
Multilink Protocol (MP) is an extension of PPP that controls the way frames are transferred across
several links whenever a single link is not sufficient to meet the requirements of your present
traffic load. Multilink Protocol establishes several simultaneous links between two end points over
switched circuits (dial-up lines) in an ISDN network, and dynamically adjusts the bandwidth
demands between available links to maintain an effective data transfer.
several links whenever a single link is not sufficient to meet the requirements of your present
traffic load. Multilink Protocol establishes several simultaneous links between two end points over
switched circuits (dial-up lines) in an ISDN network, and dynamically adjusts the bandwidth
demands between available links to maintain an effective data transfer.