imeanSURAJ

Genre: Silhouette Occasion: Uttrayan

prepared by SURAJ (imeansuraj@gmail.com) Previous Page The Metrics used for the calculations of distance to the destination are follows: Load : 1-255 where 255 is the most saturated Reliability : 1-255 where 255 is the most reliable MTU : Maximum Transmission Unit. This is not used for metric calculation. Hop Count : 1-255, by default it is 100, any router above the hop count of 255 is deemed unreachable. This is not used for metric calculation. Bandwidth : this is the width of a channel or channel capacity measured in kilobits. Understanding EIGRP packets : Hello :   EIGRP sends hello packets every 5 seconds on high bandwidth links and every 60 seconds on low bandwidth multipoint links. If it doesn’t receive a hello packet in return it doesn’t establish a connection. Hello intervals can be changed manually through commands. The time it waits after sending a hello is called the hold timer. Normally that time is 3 times that of the hello t

Previous Page prepared by SURAJ (imeansuraj@gmail.com) Within the EIGRP packet header : Version field  - is 4-bit field used to indicate the protocol version of the originating EIGRP router process. The version has not changed since its release. OPCode   - is a 4-bit field that specifies the EIGRP message type, 1 = Update, 3 = Query, 4 = Reply, 5 = Hello, 6 = IPX SA, 10 = SIA Query, 11 = SIA Reply. Checksum  – is a 24-bit field that is used to run a sanity check on the EIGRP packet itself. This field is based on the entire EIGRP packet and not including the IP header. Flags  – is a 32-bit field that is used to indicate either an  INIT  (when set (0×00000001)) for a new EIGRP neighbour or for the  Conditional Receive (CR)  (second bit (0×00000002)), used in the proprietary Reliable Multicasting algorithm, for EIGRP Reliable Transport Protocol. (RTP) Sequence  – is a 32-bit field that contains sequence number used by RTP. This is used to ensure orderly delivery of reli