Networking layer divisions
Layer 1 Based on symbols . Physical layer
Layer 2 Based on Frames . Link Layer ARP/OSPF /PPP/ MAC /
Layer 3 Based on Packets . Natework Layer ICMP/IPV6/IGMP/IPSec
Layer 4 Based on Segmanets . Transport Layer TCP/UDP/RSVP/SCTP
Layer 5 Based on Messgaes . Application Layer Protocols SMPP/SMTP/SIP/SNMP/HTTP/FTP/SSH/DHCP/DNS/TELNET.
All those protocols that send messages are application layer protocols . Like SMPP /SIP that are text based protocols . However the messages are being sent over TCP Layer 4 .
Layer 1 Based on symbols . Physical layer
Layer 2 Based on Frames . Link Layer ARP/OSPF /PPP/ MAC /
Layer 3 Based on Packets . Natework Layer ICMP/IPV6/IGMP/IPSec
Layer 4 Based on Segmanets . Transport Layer TCP/UDP/RSVP/SCTP
Layer 5 Based on Messgaes . Application Layer Protocols SMPP/SMTP/SIP/SNMP/HTTP/FTP/SSH/DHCP/DNS/TELNET.
All those protocols that send messages are application layer protocols . Like SMPP /SIP that are text based protocols . However the messages are being sent over TCP Layer 4 .
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