| [Config] "crc 16" One of the settings my provider gave me for my T1 line is crc 16. I'm using cisco 1721 w/t1 card. I've not been able to find much information on this setting or a command for it in the router. Is crc 16 a default setting for these older routers? |
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 rolandeCertifiablePremium,Mod
join:2002-05-24
Columbus, OH
Linksys
AT&T Midwest
| This is a default command to set a 16 bit CRC check on the data traversing the T-1 interface. Whether you set it or not it is configured on the interface.
quote:
CRC is an error-checking technique that uses a calculated numeric value to detect errors in transmitted data. The designators 16 and 32 indicate the length (in bits) of the frame check sequence (FCS). A CRC of 32 bits provides more powerful error detection, but adds overhead. Both the sender and receiver must use the same setting.
CRC-16, the most widely used CRC throughout the United States and Europe, is used extensively with WANs. CRC-32 is specified by IEEE 802 and as an option by some point-to-point transmission standards. It is often used on Switched Multimegabit Data Service (SMDS) networks and LANs.
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Scott, CCIE #14618 Routing & Switching
Too bad those that know it all can't do it all.
»www.thewaystation.com/techref/tech.shtml
»blog.thewaystation.com/ |
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| Thanks for clearing that up for me. |
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