Support For Multicast Router Information; Bgp Multicasting - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - MULTICAST ROUTING CONFIGURATION GUIDE 2010-10-07 Configuration Manual

Support for Multicast Router Information

BGP Multicasting

Copyright © 2010, Juniper Networks, Inc.
host1#show mroute port count
BW Priority
Port Limit Count
----- ----- -----
1/1/0 None 1
1/1/1 None 2
See show mroute port count.
When you enable multicast routing on a virtual router, the router acts as a multicast
router information (mrinfo) server. This feature enables the router to respond to mrinfo
requests from other network hosts. Specifically, E Series virtual routers respond to DVMRP
ask neighbors and DVMRP ask neighbors2 requests.
Each virtual router responds to mrinfo requests with a list of multicast interfaces and
their IP addresses. If appropriate, the virtual router also supplies the following information
for each interface:
Current functional status of the interface (for example, if the interface is down).
Information as to whether the interface is disabled and the reason for the interface
being disabled—either because IP is not configured on the interface or because the
interface has been disabled through the software.
Whether the interface is performing the IGMP queries for this subnet.
Information about PIM neighbors:
If PIM is configured on the interface, the virtual router supplies a list of the interface's
PIM neighbors and indicates which neighbors are leaf neighbors.
Information about DVMRP and GRE tunnels:
If the interface is an endpoint of a tunnel, the virtual router specifies the IP address of
the endpoint of the tunnel.
BGP multicasting (MBGP) is an extension of the BGP unicast routing protocol. Many of
the functions available for BGP unicasting are also available for MBGP.
The MBGP extensions specify that BGP can exchange information within different types
of address families. The address families available are unicast IPv4, multicast IPv4, and
VPN-IPv4. When you enable BGP, the router employs unicast IPv4 addresses by default.
We recommend you be thoroughly familiar with BGP before configuring MBGP. See
Configuring BGP Routing in the JunosE BGP and MPLS Configuration Guide for detailed
information about BGP and MBGP.
Chapter 1: Configuring IPv4 Multicast
bps BW bps Hysteresis
----- -------- ----------
None None 85
15000 10000 85
Admitted
--------
0
2000
39