IS-IS over IPv4 - IP Protocol
This page provides IP protocol information on the Intermediate System to Intermediate System Protocol (IS-IS over IPv4) detected by the Netify DPI engine. Please see the IP protocol catalog for information on other IP protocols.
IS-IS over IPv4 carries IS-IS link-state routing protocol traffic directly over IPv4, rather than IS-IS's native OSI-based data-link encapsulation.
IP Protocol Details
- Name
- Intermediate System to Intermediate System Protocol
- Abbreviation
- IS-IS over IPv4
- Status
- Active
- IANA Number
- 124
- IANA Keyword
- IS-IS over IPv4
- Reference
- IS-IS over IPv4
IP Protocol Status - Active
IS-IS itself dates to the late 1980s (ISO 10589); this IPv4-carried variant is niche, with most IS-IS deployments using native OSI framing.
IP Protocol Network Policy
IS-IS over IPv4 carries IS-IS routing protocol traffic over IPv4 instead of native OSI framing, and is only relevant to routers running IS-IS with this IP-carried transport mode.