HP 5500 Ei 5500 Si Switch Series Configuration Guide

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# Enable DLDP globally. 
 system-view 
[DeviceB] dldp enable 
# Configure GigabitEthernet 1/0/49 to operate in full duplex mode and at 1000 Mbps, and 
enable DLDP on it. 
[DeviceB] interface gigabitethernet 1/0/49 
[DeviceB-GigabitEthernet1/0/49] duplex full 
[DeviceB-GigabitEthernet1/0/49] speed 1000 
[DeviceB-GigabitEthernet1/0/49] dldp enable 
[DeviceB-GigabitEthernet1/0/49] quit 
# Configure GigabitEthernet 1/0/50 to operate  in full duplex mode and at 1000 Mbps, and 
enable DLDP on it....

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         Neighbor mac address : 0023-8956-3600 
         Neighbor port index : 60 
         Neighbor state : two way 
         Neighbor aged time : 12 
The output shows that both GigabitEthernet 1/0/49 and GigabitEthernet 1/0/50 are in 
Advertisement state, which means both links are bidirectional. 
# Enable system information monitoring on Devi ce A, and enable the display of log and trap 
information. 
[DeviceA] quit 
 terminal monitor 
 terminal logging 
 terminal trapping 
The following log and...

 50 
The output shows that the link status of both GigabitEthernet 1/0/49 and GigabitEthernet 1/0/50 
is now up. 
Manually shutting down unidirectional links 
Network requirements 
•   As shown in  Figure 12, D evice A and Device B are connected with two fiber pairs. 
•   Configure DLDP to send information when a unidirectional link is detected, to remind the network 
administrator to manually shut down the faulty port. 
Figure 12  Network diagram 
 
 
Configuration procedure 
1. Configure Device A: 
#...

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[DeviceA-GigabitEthernet1/0/50] duplex full 
[DeviceA-GigabitEthernet1/0/50] speed 1000 
[DeviceA-GigabitEthernet1/0/50] dldp enable 
[DeviceA-GigabitEthernet1/0/50] quit 
# Set the DLDP mode to enhanced. 
[DeviceA] dldp work-mode enhance 
# Set the port shutdown mode to manual. 
[DeviceA] dldp unidirectional-shutdown manual 
2. Configure Device B: 
# Enable DLDP globally. 
 system-view 
[DeviceB] dldp enable 
# Configure GigabitEthernet 1/0/49 to operate  in full duplex mode and at 1000 Mbps, and...

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 The neighbor number of the port is 1. 
         Neighbor mac address : 0023-8956-3600 
         Neighbor port index : 59 
         Neighbor state : two way 
         Neighbor aged time : 11 
 
Interface GigabitEthernet1/0/50 
 DLDP port state : advertisement 
 DLDP link state : up 
 The neighbor number of the port is 1. 
         Neighbor mac address : 0023-8956-3600 
         Neighbor port index : 60 
         Neighbor state : two way 
         Neighbor aged time : 12 
The output shows that both...

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[DeviceA-GigabitEthernet1/0/49] quit 
[DeviceA] interface gigabitethernet 1/0/50 
[DeviceA-GigabitEthernet1/0/50] shutdown 
%Jan 18 18:18:03:583 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/\
0/50 link 
status is DOWN. 
The output shows that the link status of both GigabitEthernet 1/0/49 and GigabitEthernet 1/0/50 
is down. 
Assume that in this example, the unidirectional links are caused by cross- connected fibers. Correct 
the fiber connections, and then brin g up the ports shut down...

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Configuring RRPP 
RRPP overview 
The Rapid Ring Protection Protocol (RRPP) is a link layer protocol designed for Ethernet rings. RRPP can 
prevent broadcast storms caused by data loops when an Ethernet ring is healthy, and rapidly restore the 
communication paths between the nodes in the event that a link is disconnected on the ring. 
Background 
Metropolitan area networks (MANs) and enterprise  networks usually use the ring structure to improve 
reliability. However, services will be interrupted if...

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RRPP ring 
A ring-shaped Ethernet topology is called an RRPP ring. RRPP rings fall into two types: primary ring and 
subring. You can configure a ring as either the primary ring or a subring by specifying its ring level. The 
primary ring is of level 0, and a subring is of level 1. A n  R R P P  d o m a i n  c o n t a i n s  o n e  o r  m u l t i p l e  R R P P  r i n g s ,  
one serving as the primary ring and the others serving as subrings. A ring can be in one of the following 
states: 
•...

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Primary port and secondary port 
Each master node or transit node has two ports connected to an RRPP ring, one serving as the primary 
port and the other serving as the secondary port. You can determine the port’s role.  
1.  In terms of functionality, the primary port and  the secondary port of a master node have the 
following differences: 
{  The primary port and the secondary port are designed to play the role of sending and 
receiving loop-detect packets respectively. 
{ When an RRPP ring is in...

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Type Description 
Common-Flush-FDB The master node initiates Common-Fl
ush-FDB (FDB stands for Forwarding 
Database) packets to instruct the transi t nodes to update their own MAC entries 
and ARP/ND entries when an RRPP ring  transits to Disconnect state.  
Complete-Flush-FDB The master node initiates Complete-Flush-FDB packets to instruct the transit nodes 
to update their own MAC entries and ARP/
ND entries and release blocked ports 
from being blocked temporarily when an  RRPP ring transits to...