O'Reilly logo

MPLS and VPN Architectures, Volume II by Jeff Apcar, Ivan Pepelnjak, Jim Guichard

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

MDTs

MDTs are multicast tunnels through the P-network. MDTs transport customer multicast traffic encapsulated in GREs that are part of the same multicast domain. The two types of MDTs are as follows:

  • The Default-MDT— An mVRF uses this MDT to send low-bandwidth multicast traffic or traffic that is destined to a widely distributed set of receivers. The Default-MDT is always used to send multicast control traffic between PE routers in a multicast domain.

  • The Data-MDT— This MDT type is used to tunnel high-bandwidth source traffic through the P-network to interested PE routers. Data-MDTs avoid unnecessary flooding of customer multicast traffic to all PE routers in a multicast domain.

Default-MDT

When a VRF is multicast enabled (as described in

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required