HP 5500 Ei 5500 Si Switch Series Configuration Guide

 195 
Task Remarks 
connection Configuring an MSDP mesh group  Optional 
Configuring MSDP peer connection control Optional 
Configuring SA messages 
related parameters Configuring SA message content 
Optional Configuring SA request messages Optional 
Configuring SA message filtering rules Optional 
Configuring the SA cache mechanism Optional 
 
Configuring basic MSDP functions 
 
 IMPORTANT: 
All the configuration tasks should be carried out on RPs in PIM-SM domains, and each of these RPs acts as
an MSDP...

 196 
Step Command  Remarks  
3.  Configure a 
route-distinguisher (RD) for the 
VPN instance.  route-distinguisher 
route-distinguisher
  No RD is configured by default. 
4.
  Enable IP multicast routing. 
multicast routing-enable  Disabled by default.  
5.  Return to system view. 
quit  N/A 
6.  Enable MSDP and enter VPN 
instance MSDP view.  msdp 
vpn-instance  
vpn-instance-name    Disabled by default.
 
 
For more information about the  ip vpn-instance and route-distinguisher commands, see  IP...

 197 
 NOTE: 
If only one MSDP peer is configur ed on a router, this MSDP will be  registered as a static RPF peer. 
 
Configuring an MSDP peer connection 
Configuration prerequisites 
Before you configure an MSDP peer connection, complete the following tasks:  
•  Configure any unicast routing protocol so that a ll devices in the domain are interoperable at the 
network layer. 
•   Configure basic MSDP functions. 
•   Determine the description of MSDP peers.  
•   Determine the name of an MSDP mesh...

 198 
 IMPORTANT: 
•
  Before grouping multiple routers into an MSDP mesh group, make sure that these routers are 
interconnected with one another. 
 
•  If you configure more than one mesh group name on an MSDP peer, only the last configuration is 
effective. 
  
To create an MSDP mesh group:   
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter public network MSDP 
view or VPN instance MSDP 
view.  msdp 
[ vpn-instance  
vpn-instance-name  ]  N/A 
3.
  Create an MSDP mesh group...

 199 
Step Command Remarks 
3.  Deactivate an MSDP peer. 
shutdown peer-address   Optional. 
Active by default. 
4.
  Configure the interval 
between MSDP peer 
connection retries.  timer retry interval
  Optional. 
30 seconds by default. 
 
5.  Configure an MD5 
authentication key for the TCP 
connection to be established 
with an MSDP peer.  peer 
peer-address  password 
{  cipher |  simple } password  Optional. 
By default, MD5 authentication is 
not performed before an TCP 
connection is established....

 200 
To configure the SA message content:   
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter public network MSDP view or 
VPN instance MSDP view.  msdp 
[ vpn-instance  
vpn-instance-name  ]  N/A 
3.
  Enable encapsulation of multicast 
data in SA messages.  encap-data-enable  Optional. 
Disabled by default. 
4.
  Configure the interface address as 
the RP address in SA messages.  originating-rp
 interface-type 
interface-number   Optional. 
PIM RP address by default....

 201 
By configuring a TTL threshold for multicast data packet encapsulation in SA messages, you can control 
the multicast data packet encapsulation in SA messages and limit the propagation range of SA 
messages:  
•  Before creating an SA message with an encapsul ated multicast data packet, the router checks the 
TTL value of the multicast data packet. If the TTL value is less than the threshold, the router does not 
create an SA message. If the TTL value is greater than or equal to the threshold, the...

 202 
Step Command Remarks 
1.  Enter system view. 
system-view N/A 
2.  Enter public network MSDP view or 
VPN instance MSDP view.  msdp 
[ vpn-instance  
vpn-instance-name  ]  N/A 
3.
  Enable the SA cache mechanism.  
cache-sa-enable  Optional. 
Enabled by default. 
 
4.  Configure the maximum number of (S, 
G) entries learned from the specified 
MSDP peer that the router can cache. peer 
peer-address 
sa-cache-maximum  sa-limit   Optional. 
8192 by default.
 
 
Displaying and maintaining MSDP 
 
Step...

 203 
MSDP configuration examples 
PIM-SM Inter-domain multicast configuration 
Network requirements 
As shown in Figure 60, AS 100 and AS 200 run OSPF within each AS, and run BGP between each other.   
PIM-SM 1 belongs to AS 100, and PIM-SM 2 and PIM-SM 3 belong to AS 200. Each PIM-SM domain 
has at least one multicast source or receiver.  
Loopback 0 is configured as the C-BSR and C-RP of the related PIM-SM domain on Switch B, Switch C, 
and Switch E, respectively.  
An MSDP peering relationship is set...

 204 
Configuration procedure 
1. Configure IP addresses and unicast routing:  
Configure the IP address  and subnet mask for each interface as per  Figure 60. (Details not sh
own.) 
Configure OSPF for interconnection between switches in each AS. Ensure the network-layer 
interoperation among each AS, and ensure the  dynamic update of routing information between 
the switches through a unicast rout ing protocol. (Details not shown.) 
2. Enable IP multicast routing, enabl e PIM-SM on each interface, and...