fabric with a 2K MTU, the IPoIB MTU will be 2048 - 4 = 2044 bytes.
In connected mode, the IB RC (Reliable Connected) transport is used.
- Connected mode is to takes advantage of the connected nature of the
- IB transport and allows an MTU up to the maximal IP packet size of
- 64K, which reduces the number of IP packets needed for handling
- large UDP datagrams, TCP segments, etc and increases the performance
- for large messages.
+ Connected mode takes advantage of the connected nature of the IB
+ transport and allows an MTU up to the maximal IP packet size of 64K,
+ which reduces the number of IP packets needed for handling large UDP
+ datagrams, TCP segments, etc and increases the performance for large
+ messages.
In connected mode, the interface's UD QP is still used for multicast
and communication with peers that don't support connected mode. In