Checking The Configuration - Huawei Quidway S9300 series Configuration Manual

Quidway S9300 Terabit Routing Switch
Configuration Guide - MPLS
interval for the local device receive BFD packets = MAX {Remotely configured interval for
sending BFD packets, Locally configured interval for receiving BFD packets}; Local detection
period = Actual interval for receiving BFD packets x Remotely configured BFD detection
multiple.
For example, assume that the values of parameters are as follows:
l On the local device, the interval for sending BFD packets is se to 200 ms, the interval for
l On the peer device, the configured interval for sending BFD packets is 100 ms, the interval
Then,
l On the local device, the actual interval for sending BFD packets is 600 ms calculated by
l On the peer device, the actual interval for sending BFD packets is 300 ms calculated by using
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2.6.6 Checking the Configuration

After the configuration of detecting an LDP LSP through a dynamic BFD session, you can view
the BFD configurations and BFD sessions on the ingress node and egress node.
Prerequisite
The configurations of the dynamic BFD for LDP LSP function are complete.
Procedure
l
l
l
l
l
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Issue 04 (2011-12-26)
receiving BFD packets is set to 300 ms, and the detection multiple is set to 4.
for receiving BFD packets is 600 ms, and the detection multiple is 5.
using the formula max {200 ms, 600 ms}, the interval for receiving BFD packets is 300 ms
calculated by using the formula max {100 ms, 300 ms}, and the detection period is 1500 ms
calculated by 300 ms multiplied by 5.
the formula max {100 ms, 300 ms}, the interval for receiving BFD packets is 600 ms
calculated by using the formula max {200 ms, 600 ms}, and the detection period is 2400 ms
calculated by 600 ms multiplied by 4.
Run the display bfd configuration all [ verbose ] command to check the BFD
configuration (ingress).
Run the display bfd configuration passive-dynamic [ peer-ip peer-ip remote-
discriminator discriminator ] [ verbose ] command to check the BFD configuration
(egress).
Run the display bfd session all [ verbose ] command to check information about the BFD
session (ingress).
Run the display bfd session passive-dynamic [ peer-ip peer-ip discriminator
discriminator ] [ verbose ] command to check information about the BFD established
passively (egress).
Run the display mpls bfd session [ statistics | [ protocol { ldp | cr-static | rsvp-te } ] |
[ outgoing-interface interface-type interface-number ] | [ nexthop ip-address ] | [ fec fec-
address ] | verbose | monitor ] command to check information about BFD session (ingress).
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