HP 5500 Ei 5500 Si Switch Series Configuration Guide

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A  h o s t  n a m e  i s  e a s i e r  t o  r e m e m b e r  t h a n  a  s y s t e m  I D.  After enabling this feature on the router, you can see 
the host names instead of system IDs using the  display command. 
BFD 
Bidirectional forwarding detection (BFD) provides a si ngle mechanism to quickly detect any link failures 
between IS-IS neighbors to reduce network conver gence time. For more information about BFD, see High 
Availability Configuration Guide . 
Protocols and standards 
•  ISO 10589...

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Task  Remarks 
optimizing IS-IS 
networks Specifying the IS-IS hello multiplier 
Optional 
Configuring a DIS priority for an interface Optional 
Disabling an interface from sending or receiving IS-IS packets Optional 
Enabling an interface to send small hello packets Optional 
Configuring LSP parameters Optional 
Configuring SPF parameters Optional 
Assigning a high priority to IS-IS routes Optional 
Setting the LSDB overload bit Optional 
Configuring system ID to host name mappings Optional...

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Step Command Remarks 
5.  Enter interface view.  interface
 interface-type 
interface-number   N/A 
6.
  Enable an IS-IS process on the 
interface.  isis enable
 [ process-id  ]  Disabled by default. 
 
Configuring the IS level and circuit level 
If only one area is available, HP recommends you to perform the following operations: 
•  Configure the IS level of all routers as Level-1 or Level-2 rather than different levels because the 
routers do not need to maintain two identical LSDBs.  
•...

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Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter interface view.   interface
 interface-type 
interface-number   N/A 
3.
  Configure the network type for the 
interface as P2P.  isis circuit-type p2p  Optional. 
By default, the 
network type of an 
interface depends on 
the physical media. 
The network type of a 
VLAN interface is 
broadcast. 
Configuring IS-IS routing information control 
Configuration prerequisites 
Before configuring IS-IS routing information control,...

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Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter IS-IS view.  isis
 [ process-id  ] [ vpn-instance 
vpn-instance-name  ]
  N/A
 
3.  Specify an IS-IS cost style.  cost-style
 { narrow  | wide  | wide-compatible  
| { compatible  | narrow-compatible  } 
[ relax-spf-limit  ] }  Optional. 
narrow
 by default.  
4.  Return to system view. 
quit  N/A 
5.  Enter interface view.  
interface  interface-type interface-number N/A 
6.   Specify a cost for the 
interface.  isis cost...

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To configure the priority of IS-IS:  
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter IS-IS view.  
isis [ process-id  ] [ vpn-instance  vpn-instance-name  ]
  N/A 
3.
  Specify a priority for IS-IS.  preference { route-policy 
route-policy-name | 
preference  } *  15 by default. 
 
Configuring the maximum number of ECMP routes 
Perform this task to implement load sharing over ECMP routes. 
To configure the maximum number of ECMP routes: 
 
Step Command Remarks 
1.
  Enter...

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The default route is only advertised to routers at the same level. You can use a routing policy to generate 
the default route only when a local routing entry is matched by the policy. 
To advertise a default route: 
 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter IS-IS view.  isis
 [ process-id  ] [ vpn-instance 
vpn-instance-name  ]
  N/A
 
3.  Advertise a default 
route.  default-route-advertise 
[ route-policy 
route-policy-name  | [ level-1 | level-1-2 | 
level-2  ]...

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To filter routes calculated from received LSPs:  
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter IS-IS view.  isis
 [ process-id  ] [ vpn-instance 
vpn-instance-name  ]
  N/A
 
3.  Filter routes calculated 
from received LSPs.  filter-policy { acl-number
 | ip-prefix  
ip-prefix-name  | route-policy  route-policy-name  } 
import   By default, no filtering is 
configured. 
 
Filtering redistributed routes 
IS-IS can redistribute routes from other routing protoc
ols (or...

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Tuning and optimizing IS-IS networks 
Configuration prerequisites 
Before you tune and optimize IS-IS networks, complete the following tasks: 
•   Configure IP addresses for interfaces, and make  adjacent nodes can reach each other at the 
network layer. 
•   Enable IS-IS. 
Specifying intervals for sending IS-IS hello and CSNP packets  
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter interface view.  interface
 interface-type 
interface-number   N/A
 
3.  Specify the...

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Configuring a DIS priority for an interface 
On an IS-IS broadcast network, you must elect a router as the DIS at a routing level. You can specify a 
DIS priority at a level for an interface. The greater the interface’s priority, the more likely it becomes the 
DIS. If multiple routers in the broadcast network have the same highest DIS priority, the router with the 
highest MAC address becomes the DIS. 
To specify a DIS priority for an interface: 
 
Step Command Remarks 
1.   Enter system view....