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Community Member

T1 (2 Port) Multi-Flex Trunk WAN Card Errors & Clocking

Deploying VWIC-2MFT-T1 cards in various routers & are experiencing errors & drops. Does anyone know if there are any known issues w/these cards? Also, regarding clocking, is there a particular way these cards should be configured, e.g. if there are 4 T1s on the router, only one of them can be configured as "clock source internal" & the rest MUST be "clock source line"?

Thanks in advance for your feedback!

2 REPLIES
Community Member

Re: T1 (2 Port) Multi-Flex Trunk WAN Card Errors & Clocking

We had the same issues on 2821 router with 12.4 IOS. Here is the solution i recieved from TAC.

Looks like we were hitted by the bug CSCsb00129 (LCV and PCV errors increment on VWIC-2MFT and VWIC-1MFT).

In order to solve the issue I need you to please downgrade to this IOS version and let me know the results: c2800nm-ipvoice-mz.123-11.T7.bin.

Community Member

Re: T1 (2 Port) Multi-Flex Trunk WAN Card Errors & Clocking

Unfortunately that same bug ID indicates that the problem was supposed to be fixed in 12.4(3) but since I am still having the same problem I guess it is not. Back to 12.3 code.

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