Protocol Implementation Report for "Anycast-RP using PIM"
       ---------------------------------------------------------
			    Dino Farinacci
			   August 27, 2005

Introduction
------------

This note provides a brief implemenation report of the protcool
implementations
of "Anycast-RP using PIM" as specified in draft-ietf-pim-anycast-rp-04.txt.

Vendors
-------

Two vendors were involved, cisco Systems and Procket Networks. Each provided
independent implementations.

Three people were involved. Yiqun Cai did a prototype implementation for
cisco.
Dino Farinacci shipped an implementation for Procket. John Zwiebel performed
interoperability testing of the two implementations at Procket's facilities
in the spring of 2003.

Statement of testing from cisco
-------------------------------

Cisco IOS has a prototype implementation based on an earlier version of the 
draft. The functionality that is implemented and tested includes the
following:

    1. PIM registers (including both data and NULL regisetrs) are
       forwarded to other RPs in the anycast RP set.

    2. Register-stops are not sent by RPs receiving a register
       from one in its anycast RP set; Register-stops are ignored
       and silently discarded if received from other RPs in the
       anycast RP set.

    3. The RP address can be configured statically, or learned via
       AUTORP or BSR.

The functionality specificied in Section 5.0, "interaction with MSDP running
in an Anycast-PIM Router" was not implemented.

Statement of testing from Procket
---------------------------------

PIM anycast-RP interop testing was accomplished between Procket and Cisco
in 2003. The test topology and router configurations used in this test are
shown below.  PIM registers sent by the source DR (first-hop router) were
replicated to all other routers participating in the test as PIM-RPs. All
RPs created and maintained (S,G) state while the source was sending. When
the source stopped sending, all state timed out on all participating
routers.

                               [src]
                                26a
                                 |e1/0
         vrrp: 192.1.2.254       |        [LAN1]
                 --+-------------+--------------+-
                   |                            |      [LAN3]
    [RP]    |e0/0/4|e0/0/1                e0/0/1| e0/0/3| e1/2
    pr4-----+-----pr5                          pr6------+-----26b
      e0/0/1|      |e0/0/2                e0/0/4|       |
      [LAN4]       |                            |       | 0/0/1
                 --+-------------+--------------+-      +-----rp3
         vrrp: 192.1.3.254       |        [LAN2]        |  .200
                                 |e0/0/4
                                pr7[RP]
                                 |e0/0/2
                                 |
                               --+--[LAN5]
                                 |
                                 |e1/1
                                26c
                                [RP]

NOTE: 11.1.0.1 and 12.1.0.2 were RPs in a different testbed accessed through
a GRE tunnel.

Configuartions:

PR4:
interface Loopback0
ip address 1.1.1.1/32
ip pim sparse-mode
ip igmp join-group 224.1.1.1
!
interface Ethernet0/0/1
ip address 192.1.5.4/24
ip router ospf 1
ip ospf area 0
no ip ospf cost 10
ip pim sparse-mode
no shut
!
ip pim rp-address 1.1.1.1 group-list 224.0.0.0/4
ip pim anycast-rp 1.1.1.1 11.1.0.1
ip pim anycast-rp 1.1.1.1 12.1.0.2
ip pim anycast-rp 1.1.1.1 192.1.3.7
ip pim anycast-rp 1.1.1.1 192.1.5.4

------------------------------
26c:

interface Loopback1
ip address 1.1.1.1 255.255.255.255
ip pim sparse-mode
no shut
!
interface Ethernet1/1
ip address 192.1.6.28 255.255.255.0
ip pim sparse-dense-mode
no ip mroute-cache
half-duplex
no shutdown
!
ip pim anycast-rp Ethernet1/1 11.1.0.1
ip pim anycast-rp Ethernet1/1 12.1.0.2
ip pim anycast-rp Ethernet1/1 192.1.3.7
ip pim anycast-rp Ethernet1/1 192.1.5.4
ip pim anycast-rp Ethernet1/1 192.1.6.28
ip pim rp-address 1.1.1.1

------------------------------
pr7:

interface Loopback1
ip address 1.1.1.1/32
ip pim sparse-mode
ip igmp join-group 224.1.1.1
!
interface Ethernet0/0/2
ip address 192.1.6.7/24
ip router ospf 1
ip ospf area 0
ip pim sparse
no shutdown
!
ip pim rp-address 1.1.1.1 group-list 224.0.0.0/4
ip pim anycast-rp 1.1.1.1 11.1.0.1
ip pim anycast-rp 1.1.1.1 12.1.0.2
ip pim anycast-rp 1.1.1.1 192.1.3.7
ip pim anycast-rp 1.1.1.1 192.1.5.4
!
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