I have a 2600 series router connecting me to an Internet T1. Internet traffic going over this line is barely crawling along. The serial interface on the router is reporting a massive number of input errors, including CRC, frame, and abort errors. I had my ISP run some tests a few weeks ago, and everything came up clean. They informed me that it may be my router causing the issue. I swapped the WIC out, upgraded to the latest version of IOS supported by my hardware, and even swapped out the router itself, but nothing fixed the errors. I then had the ISP test again, and all tests were clean. What am I missing?
Have the carrier run a class-a line test. I just went through 6 weeks of the same issue. They tried to say it was my equipment as well. I was firm and complied with their request to change the T1 CSU/DSU. Didn't change a thing. Turned out to be bridge taps reflecting the signal and causing errors, interface resets, and lost carriers. Bridge taps are common. They don't show up on loop backs, nor most other telco tests. They only show up on an end-to-end test - the class-a (in the US).
Bet you it's the same kind of issue. Keep after the carrier. It's their problem.
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...