Setting The Designated Router Priority - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - IP-IPV6-IGP CONFIGURATION GUIDE 2010-10-31 Configuration Manual

JunosE 11.3.x IP, IPv6, and IGP Configuration Guide
isis retransmit-throttle-interval

Setting the Designated Router Priority

isis priority
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Always specify conservatively; otherwise, excessive retransmission can result.
Because retransmissions occur only when LSPs are dropped, when you set isis
retransmit-interval to a higher value, it has little effect on reconvergence.
Set to a higher value when routers have many neighbors or more paths over which
LSPs can be flooded.
Use a large value for serial lines.
Example
host1(config-if)#isis retransmit-interval 60
Use the no version to restore the default value, 5 seconds.
See isis retransmit-interval
Use to configure the maximum rate at which IS-IS LSPs are retransmitted on
point-to-point links. The interval is the number of milliseconds between packets.
You can choose an interval in the range 0–65535 milliseconds.
The default delay value is 33 milliseconds.
The isis retransmit-throttle-interval is the maximum rate at which IS-IS LSPs are
retransmitted. It is different from isis lsp-interval, which is the rate at which LSPs are
transmitted on the interface; and it is different from isis retransmit-interval, which is
the period between successive retransmissions of the same LSP. Use all three
commands with each other to control the load of routing traffic from one router to its
neighbors.
Typically, you can set this interval for very large networks with many LSPs and many
interfaces as a way of controlling LSP retransmission traffic.
Example
host1(config-if)#isis retransmit-throttle-interval 300
Use the no version to restore the default value, 33 milliseconds.
See isis retransmit-throttle-interval
You can set the priority for the designated IS-IS router that you have elected to use.
Use to set the priority of use for your designated router.
You can configure an individual priority for level 1 and level 2 by choosing a priority level
in the range 0–127.
The default priority level is 64.
Specifying the level 1 or level 2 keyword resets the priority only for level 1 or level 2
routing, respectively.
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