Core-based Trees Protocol
This page provides IP protocol information on the Core-based Trees Protocol (CBT) detected by the Netify DPI engine. Please see the IP protocol catalog for information on other IP protocols.
CBT is Core Based Trees, a multicast routing protocol that builds a single shared distribution tree rooted at a core router rather than a tree per source.
IP Protocol Details
- Name
- Core-based Trees Protocol
- Abbreviation
- CBT
- Status
- Inactive
- IANA Number
- 7
- IANA Keyword
- CBT
- Network Policy
- Drop
- Reference
- Core-based Trees Protocol
IP Protocol Status - Inactive
CBT was proposed in the early-to-mid 1990s as an alternative to source-based multicast trees, and saw limited deployment and was largely overtaken by PIM.
IP Protocol Network Policy
IP protocol #7 - Core-based Trees Protocol - is typically dropped by edge routers and firewalls. Advanced threat actors and malware families can use these non-standard IP protocol numbers for lateral movement (east-west communication) inside internal networks.