ICMP Address Mask Request/Reply (RFC 950)

• Used to obtain network prefix (subnet mask) using ICMP

• Hosts may send during init (to broadcast address using 0.0.0.0 as source)

• Typically provided by DHCP now

Type = 13/14

Code= 0

Checksum

Address Mask

Identifier

Sequence Number

Previous slide

Next slide

Back to first slide

View graphic version