Ping Macro & Tcl

For IOS, use tcl to script ping

tclsh
foreach address {
164.1.1.1
164.2.2.2
} { ping $address
}

For Catalyst

macro name PINGALL
do ping 164.1.1.1
do ping 164.2.2.2
@
macro global apply PINGALL

Protocols Overhead

Ethernet : 38 bytes
Ethernet + 802.1q : 42 bytes

IPv4 : 20 bytes
IPv6 : 40 bytes

TCP : 20 bytes
Tcp timestamps : +12 bytes

UDP : 8 bytes

MPLS : 4 octets

Non-Cisco SFP

Maybe you tried in vain to put non-cisco (Finisar,...) SFP inside a Catalyst.
2 Magical commands to accept it :

service unsupported-transceiver
errdisable detect cause gbic-invalid

Thats-all