￿

 

 

 

￿

 

 

 

 

 

 

8260> show ring_map token_ring logical token_ring_1

 

 

 

Token Ring Logical Map for Network TOKEN_RING_1

 

 

 

MAC Address

Slot

Port

 

 

-----------------

-----

----

 

 

 

 

02-00-00-c0-cc-1c

05.01

1

 

 

 

 

02-00-00-c0-cc-0a

05.01

2

 

 

 

 

02-00-00-e0-9c-10

05.01

2

 

 

 

 

08-00-8f-40-01-a6

05.01

3

 

 

 

00-00-00-00-00-00

05.01

4

 

 

 

￿

8260>

 

 

￿

 

 

 

 

 

Figure 101. Address-to-Port Map Display for MAC-less Stations

8.11 Address-to-Port Mapping for Per-Port Switching Modules

The per-port switching modules take advantage of the Ring Monitor function to build an address-to-port map.

The Ring Monitor function on each port is normally situated upstream of its associated port and listen for the neighbor notification process looking for AMP/SMP MAC frames, as shown in Figure 102.

Figure 102. Address-to-Port Mapping on Per-Port Switching Modules

Ring Monitor ignores all the AMP/SMP MAC frames that have A/C bit set to B′1′, but as soon it sees an AMP/SMP with the A/C bit set to B′0′ (this frame is issued by the station immediately upstream of this Ring Monitor) it moves to the downstream side of its associated port and tracks the AMP/SMP MAC frame.

After moving downstream of its port, one of the following may happen:

1.The Ring Monitor will not see any AMP/SMP frame by the time that it is asked by the Ring Monitor downstream of it to move back upstream of its associated port. This means that there is a MAC-less station attached to that port.

Note: The MAC-less stations do not send AMP/SMP frames.

164 8260 Multiprotocol Intelligent Switching Hub

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IBM 8260 manual Address-to-Port Mapping for Per-Port Switching Modules, Address-to-Port Map Display for MAC-less Stations

8260 specifications

The IBM 8260 is a significant entry in the realm of enterprise servers, recognized for its performance, scalability, and robust features designed to cater to demanding business environments. It primarily serves as a high-capacity server for large organizations, capable of handling extensive workloads and complex applications without compromising speed or efficiency.

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Memory capacity is another key characteristic of the IBM 8260. Depending on the specific configuration, it can support substantial amounts of RAM, ensuring that applications can run effectively without the bottlenecks often associated with data-intensive tasks. This is crucial for enterprises that rely on real-time data analytics, large database management, and resource-heavy applications.

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