Once IOS recognizes the interface is down, the trap is sent almost immediately.Turn on debug snmp on a router and pull a cable. You'll see the trap messages fly across the console.
It may take time for IOS to find out an interface is offline. This is an IOS mechanism and not part of the SNMP engine. Example - a T1 circuit fails, but CSU doesn't drop carrier to router. IOS has to wait for keepalive timeout to know circuit is down.Also, if there are a huge amount of trap messages, buffering does occur to keep from possibly crashing the router.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...