Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 451
null (when the endpoint-discriminator option is not present in a
received configure request)
discriminator-id — specifies the endpoint-discriminator identifier value within the
specified endpoint-discriminator class
Values any valid IP address
magic-number
Syntax [no] magic-number
Context config>port>multilink-bundle>mlppp
Description This command allows loopback detection to be enabled and disabled for MLPPP bundles.
The command is disabled by default. When the magic number option is disabled, the magic
number option will not be requested when a member is trying to bring up the LCP layer on a
member link; if the remote peer requests this option, it will be rejected. When transmitting
echo-requests, a magic number of 0 is used. When responding to echo-requests, a magic
number of 0 is sent.
If the magic-number option is enabled, the option is sent to the remote peer during protocol
negotiation. If this option is rejected by the remote peer, the router will bring the link up but
will be unable to detect loopbacks since the router will always send a magic number of 0 in
the echo messages upon rejection. If this option is accepted by the remote peer, the router
will send echo messages with randomly generated (non-zero) magic numbers. If the
7705 SAR receives a config-req with the same magic number that was sent out, the router
will calculate a new magic number to use and send out another config-request. If the router
persistently sees the randomly generated magic number in the received config-req, the router
will declare a loopback.
The no form of the command disables the loopback detection.
Default no magic-number
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