No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - IP Routing 01

NE05E and NE08E V300R003C10SPC500

This is NE05E and NE08E V300R003C10SPC500 Configuration Guide - IP Routing
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring Dynamic BFD for IPv6 IS-IS

Configuring Dynamic BFD for IPv6 IS-IS

BFD provides link failure detection featuring light load and high speed (within milliseconds). With dynamic BFD, routing protocols can dynamically trigger the establishment of BFD sessions.

Usage Scenario

If the network requires zero packet loss and fast convergence when the link status changes, you can configure dynamic BFD on IS-IS links.

BFD needs to be configured based on the actual network environment. If the time parameters are set improperly, network flapping may occur.

Pre-configuration Tasks

Before configuring dynamic BFD for IPv6 IS-IS, complete the following tasks:

Configuration Procedures

Figure 9-7 Flowchart for configuring dynamic BFD for IPv6 IS-IS

Configuring BFD Globally

Before configuring dynamic BFD for IS-IS, enable BFD globally.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run bfd

    BFD is configured globally.

  3. Run commit

    The configuration is committed.

Configuring BFD for an IS-IS IPv6 Process

By configuring BFD for an IS-IS IPv6 process, you can set parameters for dynamic BFD sessions and enable dynamic BFD for IPv6 IS-IS on all IS-IS IPv6 interfaces.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run isis process-id

    The IS-IS view is displayed.

  3. Run ipv6 bfd all-interfaces enable

    BFD is enabled for the IS-IS process to establish BFD sessions.

    If global BFD has been enabled for the IS-IS process and the neighbor IPv6 status is Up, IS-IS adopts default BFD parameters to establish BFD sessions on all the interfaces in the IS-IS process.

  4. (Optional) Run ipv6_bfd all-interfaces { min-rx-interval receive interval | min-tx-interval transmit-interval | detect-multiplier multiplier-value | frr-binding } *

    BFD parameters are configured to establish BFD sessions.

    BFD detection intervals are calculated as follows:

    • Effective local interval at which BFD packets are sent = MAX { Configured local interval at which BFD packets are sent, Configured remote interval at which BFD packets are received }
    • Effective local interval at which BFD packets are received = MAX { Configured remote interval at which BFD packets are sent, Configured local interval at which BFD packets are received }
    • Effective local detection interval = Effective local interval at which BFD packets are received x Configured remote detection multiplier

    The minimum interval at which BFD packets are sent and the minimum interval at which BFD packets are received are 1000 ms, and the detection multiplier is 3 on the egress, which are fixed values.

  5. Run commit

    The configuration is committed.

(Optional) Preventing an IPv6 Interface from Dynamically Establishing BFD SessionS

This section describes how to disable an IS-IS IPv6 interface from dynamically establishing BFD sessions.

Context

After the ipv6_bfd all-interfaces enable command is run for an IS-IS process all IS-IS interfaces whose neighbors are Up on a P2P network establish dynamic BFD sessions; all IS-IS interfaces whose neighbors are Up on a broadcast network establish BFD sessions between DISs and non-DISs. To disable an interface from dynamically establishing BFD sessions, perform the following operations:

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run isis ipv6 bfd block

    The interface is prevented from dynamically establishing BFD sessions.

  4. Run commit

    The configuration is committed.

(Optional) Configuring BFD on a Specified IPv6 Interface

This section describes how to configure BFD and its parameters on a specified IPv6 interface.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run isis ipv6 bfd enable

    BFD is enabled on the interface to establish BFD sessions.

    After BFD is globally enabled for an IS-IS process, default BFD parameters are used to establish BFD sessions.

  4. (Optional) Run isis ipv6 bfd { min-rx-interval receive-interval | min-tx-interval transmit-interval | detect-multiplier multiplier-value | frr-binding } *

    BFD parameters are configured to establish BFD sessions.

    NOTE:

    BFD parameters configured on an interface take precedence over those configured for a process in establishing dynamic BFD sessions.

  5. Run commit

    The configuration is committed.

Verifying the Configuration of Dynamic BFD for IPv6 IS-IS

After configuring dynamic IPv6 BFD for IS-IS, check information about the BFD session and dynamic BFD for IS-IS on an interface.

Prerequisites

Dynamic IPv6 BFD for IS-IS has been configured.

Procedure

  • Run the display isis ipv6 bfd [ process-id | vpn-instance vpn-instance-name ] session { all | peer ipv6-address } command to check information about BFD sessions.
  • Run the display isis ipv6 bfd [ process-id | vpn-instance vpn-instance-name ] interface command to check BFD configurations on an interface.

Example

If IPv6 BFD for IS-IS is enabled for both ends of a link, the display isis ipv6 bfd [ process-id | vpn-instance vpn-instance-name ] session { all | peer ipv6-address } command output shows that BFD is Up.

<HUAWEI> display isis ipv6 bfd 1 session all

                      IPv6 BFD session information for ISIS(1)
                      -----------------------------------



Peer System ID : 0000.0000.0002        Type : L2
Interface : GE0/1/0           
IPv6 BFD State : up      TX : 10            RX : 10            Multiplier : 3
LocDis : 16386      Local IPv6 Address: FE80::2120:B972:E661:DE43
RemDis : 16386      Peer IPv6 Address : FE80::88D7:18AA:A40E:7087
Diag : No diagnostic information

Total BFD session(s): 1

Run the display isis ipv6 bfd [ process-id | vpn-instance vpn-instance-name ] interface command to view BFD-enabled interfaces and BFD session parameters on these interfaces.

<HUAWEI> display isis ipv6 bfd interface
                    IPv6 BFD information of interface for ISIS(1)
                   -----------------------------------------
 Interface          BFD6.State         Min-Tx            Min-Rx            Mul


 GE0/1/0             enable            10                10                3

 Total interfaces: 1                          Total bfd enabled interfaces: 1
Translation
Download
Updated: 2019-01-14

Document ID: EDOC1100058916

Views: 35585

Downloads: 53

Average rating:
This Document Applies to these Products
Related Version
Related Documents
Share
Previous Next