Cisco Routing – Administrative Distance

Cisco routers are capable of different routing protocols and static and connected routes. Every routing protocol engine has its own distance/metric/weight to decide which route is best. When a routing protocol has chosen its best route, the route is entered into the routing table. The routing engine uses an “administrative distance” per routing protocol to …

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Pirelli Modem does allways NAT

When I restart my Pirelli modem it allways disconnects all TCP connections! After the connection table of the Pirelli is flushed (by rebooting) it sends a RST for the next packet of any TCP connection.Why doesn’t it simply forward this packet. Client and servers don’t care if a router on the way is rebooting. Pirelli …

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Pirelli doesn’t forward port 7070 correctly

Problem: Pirelli modem is not transparently routing traffic for tcp port 7070 and 554. I’m using a Pirelly VDSL modem at home in pure routing mode (no NAT, no QoS). When starting a TCP connection to port 7070 (or 554), the Pirelli modem answers the TCP SYN with SYNACK, then it tries to connect the …

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