Cisco 4221 with two 8 port expensions

[damat]

Hi,

I recently bought a Cisco 4221 with two NIM es2-8 modules.

I am going to use this as a Layer 3 switch.

The problem is that I can't send traffic between the two modules.

They act as two separate switches. I want them to act as one switch with 16 ports.

How can i configure that?

Regards,

Donovan

[Reza Sharifi]

Hi,

They both can't be combined or stacked to make 16 ports but the ports can communicate with one another.

The LAN switch NIMs have a gigabit connection to the MGF and transparently integrate into the system. Connecting over the MGF enables the NIM to directly communicate with other MGF-enabled modules in the system without involving the router’s forwarding architecture (Figure 2). Throughput for direct module-to-module traffic using the MGF will thereby not be limited by the platform’s performance license levels. Layer 2 switching of packets is thus done at the full Gigabit Ethernet line rate, either local to each LAN switch NIM or when transferring the MGF with multiple MGF-enabled modules installed in the system; module-to-module MGF traffic throughput is limited to 1 Gbps.

see figure-2 in this link:

https://www.cisco.com/c/en/us/products/collateral/routers/4000-series-integrated-services-routers-isr/data_sheet_c78-612808.html

HTH 

[damat]

Okay so I need to configure MGF on device (ISR4221).

I cant find a document for this exact module.

Can you post the how to configure it here?

[Reza Sharifi]

Have a look at this guide.  It may provide the info you need:

https://www.cisco.com/c/en/us/td/docs/routers/access/4400/software/configuration/guide/isr4400swcfg/bm_isr_4400_sw_config_guide_chapter_01110.html

HTH

[damat]

Yes i have read that page many times but it still does not explain how to configure it.