◦
Complete sequence number PDU (CSNP) interval. CSNPs are sent by the designated router to
maintain database synchronization
◦
Retransmission interval. This is the time between retransmission of IS-IS LSPs for point-to-point
links.
◦
IS-IS LSP retransmission throttle interval. This is the maximum rate (number of milliseconds
between packets) at which IS-IS LSPs are re-sent on point-to-point links This interval is different
from the retransmission interval, which is the time between successive retransmissions of the same
LSP
•
Designated router election priority, which allows you to reduce the number of adjacencies required on
a multiaccess network, which in turn reduces the amount of routing protocol traffic and the size of the
topology database.
•
The interface circuit type, which is the type of adjacency desired for neighbors on the specified interface
•
Password authentication for the interface
How to Configure IS-IS Routing
Default IS-IS Configuration
Table 16: Default IS-IS Configuration
Default SettingFeature
Enabled.Ignore link-state PDU (LSP) errors
Conventional IS-IS: the router acts as both a Level 1 (station) and
a Level 2 (area) router.
Multiarea IS-IS: the first instance of the IS-IS routing process is a
Level 1-2 router. Remaining instances are Level 1 routers.
IS-IS type
Disabled.Default-information originate
Disabled.Log IS-IS adjacency state changes.
Maximum interval between two consecutive occurrences: 5 seconds.
Initial LSP generation delay: 50 ms.
Hold time between the first and second LSP generation: 5000 ms.
LSP generation throttling timers
1200 seconds (20 minutes) before t.he LSP packet is deleted.LSP maximum lifetime (without a
refresh)
Send LSP refreshes every 900 seconds (15 minutes).LSP refresh interval
1497 bytes.Maximum LSP packet size
Routing Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9500 Switches)
149
Configuring IP Unicast Routing
How to Configure IS-IS Routing
To Next Page
Loading...
Need help?
General
