Siemens RX1500

RUGGEDCOM ROX II
User Guide
Chapter 5
Setup and Configuration
GMRP (GARP Multicast Registration Protocol) 569
A E C
D
B
A2
A1
E2
E1
C2
C1
B4
B3
D1
D2
B1
B2
H1 H2
S1
S2
2
3
1
1
Figure 660: Example – Establishing Membership with GMRP
1. Multicast Source 2. Switch 3. Multicast Host
The hosts and switches establish membership with the Multicast Group 1 and 2 as follows:
. Host H1 is GMRP unaware, but needs to see traffic for Multicast Group 1. Therefore, Port E2 on Switch E is
statically configured to forward traffic for Multicast Group 1.
. Switch E advertises membership in Multicast Group 1 to the network through Port E1, making Port B4 on
Switch B a member of Multicast Group 1.
. Switch B propagates the join message, causing Ports A1, C1 and D1 to become members of Multicast Group
1.
. Host H2 is GMRP-aware and sends a join request for Multicast Group 2 to Port C2, which thereby becomes a
member of Multicast Group 2.
. Switch C propagates the join message, causing Ports A1, B2, D1 and E1 to become members of Multicast
Group 2.
Once GMRP-based registration has propagated through the network, multicast traffic from S1 and S2 can reach
its destination as follows: