Juniper JUNOS 10.1 - RELEASE NOTES REV 4 Release Note page 102

JUNOS 10.1 Software Release Notes
In JUNOS Release 10.1 and later, you can use the router's main instance loopback
(
state for the multicast VPN. We strongly recommend that you perform the following
procedure when upgrading to JUNOS Release 10.1 if your draft-rosen multicast VPN
network includes both Juniper Network routers and other vendors' routers functioning
as provider edge (PE) routers. Doing so preserves multicast VPN connectivity
throughout the upgrade process.
Because JUNOS Release 10.1 supports using the router's main instance loopback
(
match the main instance loopback adddress
NOTE: You might want to maintain a multicast VPN instance
for protocol peering (such as IBGP sessions), or as a stable router identifier, or to
support the PIM bootstrap server function within the VPN instance.
Complete the following steps when upgrading routers in your draft-rosen multicast
VPN network to JUNOS Release 10.1 if you want to configure the routers's main
instance loopback address for draft-rosen multicast VPN:
1.
NOTE: Do not configure the new feature until all the PE routers in the network have
been upgraded to JUNOS Release 10.1.
2.
3.
NOTE: To maintain a loopback address for a specific instance, configure a loopback
address value that does not match the main instance address (
102
Upgrade and Downgrade Instructions for JUNOS Release 10.1 for M Series, MX Series, and T Series Routers
) address (rather than the multicast VPN loopback address) to establish the PIM
lo0.0
lo0.0 ) address, it is no longer necessary for the multicast VPN loopback address to
Upgrade all PE routers to JUNOS Release 10.1 before you configure the loopback
address for draft-rosen Multicast VPN.
After you have upgraded all routers, configure each router's main instance
loopback address as the source address for multicast interfaces. Include the
default-vpn-source interface-name loopback-interface-name]
hierarchy level.
protocols pim]
After you have configured the router's main loopback address on each PE router,
delete the multicast VPN loopback address (
We also recommend that you remove the multicast VPN loopback address from
all PE routers from other vendors. In JUNOS releases prior to 10.1, to ensure
interoperability with other vendors' routers in a draft-rosen multicast VPN
network, you had to perform additional configuration. Remove that configuration
from both the Juniper Networks routers and the other vendors' routers. This
configuration should be on Juniper Networks routers and on the other vendors'
routers where you configured the lo0.mvpn address in each VRF instance as the
same address as the main loopback (lo0.0) address.
This configuration is not required when you upgrade to JUNOS Release 10.1 and
use the main loopback address as the source address for multicast interfaces.
to maintain interoperability.
lo0.0
address to use
lo0.x
statement at the
lo0.x ) from all routers.
lo0.0 ).
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