You are hitting bug ID CSCdw66805
According from the release note
SSH is a memory-intensive feature, which consequently limits the number of
VLANs, trunk ports, and cluster members that may be configured on the
Catalyst 2950 according to the following restrictions:
*The multiplicative product of the number of trunk ports and VLANs must be
less than or equal to 128 [i.e. (# of trunks)*(# of VLANs) must be less
than or equal to 128]. Thus, if there are 2 trunks on the switch, up to 64
VLANs can be configured (2*64=128).
*If your Catalyst 2950 switch is also configured as a cluster commander
switch, the cryptographic image can only support up to 8 cluster members in
the cluster.
There is no limitation on the use of other features.
If a switch, which has previously saved configurations exceeding the above
restrictions, is loaded with the 2950 Cryptographic software,
unpredictable behavior, such as continuous reloads, may occur when
system memory is completely running out.
If the following message is observed with the Cryptographic software:
%SYS-2-MALLOCFAIL: Memory allocation of (number_of_bytes) bytes failed ...
It is possible that the configurations already exceed the restrictions.
Please check the configurations to make sure the above restrictions
are not exceeded.
You are hitting hardware limitation.
HTH,
jerry
