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Llc2 local termination – EXP Computer PathBuilder S200 User Manual

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Bridging

LLC2 Local Termination

LLC2 Local Termination

LLC2 Local
Termination

LLC2 Local Termination lets specific Token Ring ports generate and respond to
LLC2 polls with local acknowledgments, thereby preserving bandwidth and
preventing session timeouts in a Bridging application.

Local Termination, also referred to as “spoofing,” provides an efficient means for
carrying out an LLC2 session between two SNA end stations attached to separate
Token Ring LANs connected by a Wide Area Network (WAN).

Additionally, Local Termination provides detailed statistics on LLC2 sessions.

LT Example

For example, Figure 48 shows a network where running LLC2 Local Termination at
the edge point PathBuilder S24x, 26x, and 27x switches enables spoofing from one
side of the network to the other across multiple Token Rings.

Figure 48. Local Termination Example

SNA

FEP

LLC2

Keepalives/Acks

LLC2

Keepalives/Acks

CC

LLC2

Keepalives/Acks

CC

LLC2
Keepalives/Acks

LLC2

Keepalives/Acks