HP 5500 Ei 5500 Si Switch Series Configuration Guide

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Step Command Remarks 
3.  Configure a default metric for 
redistributed routes.  default cost 
value  Optional. 
The default metric of a redistributed 
route is 0. 
4.
  Redistribute routes from 
another protocol.  import-route 
protocol [  process-id  
|  all-processes  | allow-ibgp  ] [ cost 
cost  |  route-policy 
route-policy-name  | tag  tag ] *   By default, no redistribution is 
configured. 
 
Tuning and optimizing RIP networks 
Before you tune and optimize RIP networks, complete the...

 33 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter interface view.  interface
 interface-type 
interface-number  N/A 
3.
  Enable split horizon. 
rip split-horizon  Optional. 
Enabled by default. 
 
Enabling poison reverse 
The poison reverse function allows an interface to advertise the routes received from it, but the metric of 
these routes is set to 16, making them unreachable. This can avoid routing loops between neighbors.  
To enable poison reverse: 
 
Step Command...

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Step Command Remarks 
2.  Enter RIP view.  rip
 [ process-id  ] [ vpn-instance  
vpn-instance-name  ]  N/A 
3.
  Enable zero field check on 
received RIPv1 messages.  checkzero  Optional. 
Enabled by default. 
 
Enabling source IP address check on incoming RIP updates 
You can enable source IP address check on incoming RIP updates.  
For a message received on an Ethernet interface, RI
P compares the source IP address of the message with 
the IP address of the interface. If they are not in th e same...

 35 
Follow these guidelines when you specify a RIP neighbor: 
•  Do not use the  peer ip-address  command when the neighbor is directly connected because the 
neighbor may receive both the unicast and multicast (or broadcast) of the same routing information. 
•   If a specified neighbor is not directly connected, then disable the source address check on incoming 
updates. 
To specify a RIP neighbor: 
 
Step Command Remarks 
1.   Enter system view. 
system-view  N/A 
2.  Enter RIP view.  rip
 [...

 36 
Configuring RIP FRR 
When a link in a RIP network fails, the traffic is interrupted until RIP completes routing convergence based 
on the new network topology.  
You can enable RIP fast reroute (FRR) to reduce traffic recovery time.  
Figure 9 Network diagram for RIP FRR 
 
 
In Figure 9 , after you enable FRR on Router B, RIP designates a backup next hop using a routing policy 
when a network failure is detected. Packets are directed  to the backup next hop to reduce traffic recovery 
time. At the...

 37 
•  Single-hop detection in BFD echo packet mode for  a directly connected neighbor. In this mode, a 
BFD session is established only when the neighbor has route information to send. 
•   Bidirectional detection in BFD control packet mode  for an indirectly connected neighbor. In this 
mode, a BFD session is established only when both  ends have routes to send and BFD is enabled 
on the receiving interface. 
For more information about BFD, see  High Availability Configuration Guide .  
Single-hop...

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Task Command Remarks 
Display RIP current status and 
configuration information. display rip
 [ process-id  | 
vpn-instance  vpn-instance-name  ] 
[ |  { begin |  exclude | include } 
regular-expression  ]   Available in any view 
Display all active routes in RIP 
database.  display rip process-id 
database [ | 
{  begin |  exclude | include  } 
regular-expression  ]   Available in any view
 
Display RIP interface information.  display rip process-id
 interface 
[  interface-type interface-number  ]...

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[SwitchB-rip-1] network 10.0.0.0 
# Display the RIP routing table of Switch A. 
[SwitchA] display rip 1 route 
 Route Flags: R - RIP, T - TRIP 
              P - Permanent, A - Aging, S - Suppressed, G - Garbage-coll\
ect 
 -----------------------------------------------------------------------\
----- 
 Peer 192.168.1.2  on Vlan-interface100 
      Destination/Mask        Nexthop     Cost    Tag   Flags   Sec 
         10.0.0.0/8        192.168.1.2      1       0    RA      11 
The output shows that...

 40 
Figure 11 Network diagram 
 
 
Configuration procedure 
1. Configure an IP address for each  interface. (Details not shown.) 
2. Configure basic RIP functions: 
# Enable RIP 100 and specify RIP version 2 on Switch A. 
 system-view 
[SwitchA] rip 100 
[SwitchA-rip-100] network 10.0.0.0 
[SwitchA-rip-100] network 11.0.0.0 
[SwitchA-rip-100] version 2 
[SwitchA-rip-100] undo summary 
[SwitchA-rip-100] quit 
# Enable RIP 100 and RIP 200 and specify RIP version 2 on Switch B. 
 system-view 
[SwitchB] rip...

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16.4.1.1/32         Direct 0    0            127.0.0.1       InLoop0 
127.0.0.0/8         Direct 0    0            127.0.0.1       InLoop0 
127.0.0.1/32        Direct 0    0            127.0.0.1       InLoop0 
3.  Configure route redistribution: 
# On Switch B, configure RIP 200 to redistribute direct routes and routes from RIP 100. 
[SwitchB] rip 200 
[SwitchB-rip-200] import-route rip 100 
[SwitchB-rip-200] import-route direct 
[SwitchB-rip-200] quit 
# Display the routing table of Switch C....