svcTmplMtu
1.3.6.1.4.1.6527.3.1.2.4.2.86.1.6
The value of the object svcTmplMtu specifies the largest frame
size (in octets) that this service can handle.
The default value of this object depends on the service type:
1514 octets for epipe, p3pipe and tls, 1508 for apipe
and fpipe, and 1500 octets for vprn, ipipe and ies, 1514
octets for cpipe.