Protocol Stack List
The Cisco Provider Connectivity Assurance Sensor Capture (formerly Skylight sensor: capture) sniffer decodes the different protocol levels, as described in the Glossary (Protocol Stack).
You can use them to filter the captured flows or to define applications.
Here is the comprehensive list with common use cases:
| Protostack | Description | Common Use Case |
|---|---|---|
| ARP | Address Resolution Protocol | Ethernet/ARP |
| BGP | Border Gateway Protocol | Ethernet/IPv4/TCP/BGP |
| Bittorrent | BitTorrent protocol | Ethernet/IPv4/TCP/Bittorrent |
| BOOTP | Bootstrap Protocol | Ethernet/IPv4/UDP/BOOTP |
| COTP | Connection Oriented Transport Protocol | Ethernet/IPv4/TCP/TPKT/COTP |
| Citrix | Citrix protocol | Ethernet/IPv4/TCP/Citrix-CGP/Citrix-protocol-driver/Citrix |
| Citrix-CGP | Citrix Common Gateway Protocol | Ethernet/IPv4/TCP/Citrix-CGP/... |
| Citrix-protocol-driver | Citrix Protocol Driver | Ethernet/IPv4/TCP/Citrix-CGP/Citrix-protocol-driver/... |
| DCE_RPC | Distributed Computing Environment/Remote Procedure Call | Ethernet/IPv4/TCP/Netbios/SMB/DCE_RPC |
| DHCP | Dynamic Host Configuration Protocol | Ethernet/IPv4/UDP/DHCP |
| DNS | Domain Name System | Ethernet/IPv4/UDP/DNS |
| DRDA | Distributed Relational Database Architecture | Ethernet/IPv4/TCP/DRDA |
| ERSPAN | Encapsulated Remote Switched Port Analyzer | Ethernet/IPv4/GRE/ERSPAN/... |
| Ethernet | Ethernet protocol | Ethernet/... |
| FCoE | Fibre Channel over Ethernet | Ethernet/FCoE |
| FTP | File Transfer Protocol | Ethernet/IPv4/TCP/FTP |
| GRE | Generic Routing Encapsulation | Ethernet/IPv4/GRE/... |
| GTP | GPRS Tunnelling Protocol | Ethernet/IPv4/UDP/GTP/... |
| Gnutella | Gnutella protocol | Ethernet/IPv4/UDP/Gnutella |
| HTTP | Hypertext Transfer Protocol | Ethernet/IPv4/TCP/HTTP |
| HTTP/2 | Hypertext Transfer Protocol 2.0 | Ethernet/IPv4/TCP/HTTP/2 |
| ICMP | Internet Control Message Protocol | Ethernet/IPv4/ICMP |
| ICMPv6 | Internet Control Message Protocol version 6 | Ethernet/IPv6/ICMPv6 |
| IMAP | Internet Message Access Protocol | Ethernet/IPv4/TCP/IMAP |
| IPv4 | Internet Protocol version 4 | Ethernet/IPv4/... |
| IPv6 | Internet Protocol version 6 | Ethernet/IPv6/... |
| IPsec | Internet Protocol Security | Ethernet/IPv4/TCP/IPsec |
| IRC | Internet Relay Chat | Ethernet/IPv4/TCP/IRC |
| Kerberos | Kerberos network authentication protocol | Ethernet/IPv6/UDP/Kerberos |
| LDAP | Lightweight Directory Access Protocol | Ethernet/IPv4/TCP/LDAP |
| MGCP | Media Gateway Control Protocol | Ethernet/IPv4/UDP/MGCP |
| MPLS | Multiprotocol Label Switching | Ethernet/MPLS/... |
| MySQL | MySQL protocol | Ethernet/IPv4/TCP/MySQL |
| NTP | Network Time Protocol | Ethernet/IPv4/UDP/NTP |
| Netbios | Network Basic Input/Output System | Ethernet/IPv4/TCP/Netbios/... |
| ONC_RPC | Open Network Computing Remote Procedure Call | Ethernet/IPv4/UDP/ONC_RPC |
| PCanywhere | pcAnywhere protocol | Ethernet/IPv4/TCP/PCanywhere |
| POP | Post Office Protocol | Ethernet/IPv4/TCP/POP |
| PostgreSQL | PostgreSQL protocol | Ethernet/IPv4/TCP/PostgreSQL |
| RTCP | RTP Control Protocol | Ethernet/IPv4/UDP/RTCP |
| RTP | Real-time Transport Protocol | Ethernet/IPv4/UDP/RTP |
| SDP | Session Description Protocol | Ethernet/IPv4/UDP/SIP/SDP |
| SIP | Session Initiation Protocol | Ethernet/IPv4/UDP/SIP |
| SKINNY | Skinny Client Control Protocol | Ethernet/IPv4/TCP/SKINNY |
| SMB | Server Message Block | Ethernet/IPv4/TCP/Netbios/SMB |
| SMTP | Simple Mail Transfer Protocol | Ethernet/IPv4/TCP/SMTP |
| SOCKS5 | SOCKS5 Protocol | Ethernet/IPv4/UDP/SOCKS5 |
| SSH | Secure Shell Protocol | Ethernet/IPv4/TCP/SSH |
| SSLv2 | Secure Sockets Layer version 2 | Ethernet/IPv4/TCP/SSLv2 |
| TCP | Transmission Control Protocol | Ethernet/IPv4/TCP/... |
| TDS | Tabular Data Stream | Ethernet/IPv4/TCP/TDS/... |
| TDS(msg) | Tabular Data Stream message | Ethernet/IPv4/TCP/TDS/TDS(msg) |
| TLS | Transport Layer Security | Ethernet/IPv4/TCP/TLS/... |
| TNS | Transparent Network Substrate | Ethernet/IPv4/TCP/TNS |
| TPKT | ISO Transport Service | Ethernet/IPv4/TCP/TPKT/... |
| Telnet | Telnet protocol | Ethernet/IPv4/TCP/Telnet |
| UDP | User Datagram Protocol | Ethernet/IPv4/UDP/... |
| VNC | Virtual Network Computing | Ethernet/IPv4/TCP/VNC |
| VXLAN | Virtual Extensible LAN | Ethernet/IPv4/UDP/VXLAN/... |
© 2025 Cisco and/or its affiliates. All rights reserved.
For more information about trademarks, please visit: Cisco trademarks
For more information about legal terms, please visit: Cisco legal terms
For legal information about Accedian Skylight products, please visit: Accedian legal terms and tradmarks