You have two options to connect these routers. The 2500's AUI port is an old-style Ethernet port which requires a transceiver to connect to anything. This allowed one port to be used for twisted pair, coax, or fiber cable types. The 2600 should have an Ethernet port of some kind as well. (I would need to know the specific model to say what port configuration it has.) So, you could purchase an AUI transciever for Ethernet, and use an Ethernet crossover cable between them.
Option two is the slower serial route. The 2500 probably has a DB-60 serial connection, which is the same as the WIC-1T. These can be connected via a DTE-DCE serial cable. One end of this cable is marked "DCE", and the router to which it is connected should have a "clock rate" command applied under the interface. This is a common lab configuration.
Among other places, both transceivers and DTE-DCE cables can be found on online auction sites.
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...