Get rid Cisco IOS router message: %FW-4-TCP_OoO_SEG: Dropping TCP Segment

Some times you will see on a Cisco IOS router the following message in your show logging: 009357: Jul 8 09:28:22.214 CDT: %FW-4-TCP_OoO_SEG: Dropping TCP Segment: seq:104330552 1492 bytes is out-of-order; expected seq:104304632. Reason: TCP reassembly queue overflow - session <internal host>:1535 to <external host>:80 This message can be very annoying if you see it. … Continue reading Get rid Cisco IOS router message: %FW-4-TCP_OoO_SEG: Dropping TCP Segment

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Cisco Router 877 configuration in the UK with BT internet

Few weeks back I had to do an installation for my work in the UK. We had some problems to get the connection correct. And I had to find out which configuration I had to use. The main problem we found was which configuration we needed. Because me and my colleague are used to configure … Continue reading Cisco Router 877 configuration in the UK with BT internet

Your Cisco Router as DHCP / DNS Server

If you want to use your router as a DHCP server. Than should you do the following thing. no ip dhcp use vrf connected ip dhcp excluded-address 1 ! ip dhcp pool CLIENT import all network default-router dns-server domain-name .local lease 32 ! ip domain name .local ip domain-lookup ip name-server 208.67.222.222 ( or your … Continue reading Your Cisco Router as DHCP / DNS Server

Configure a Cisco Router for Bridge usage

Below a configuration of a cisco router in bridge mode the pvc is used for a Dutch ISP  service timestamps debug datetime msec localtime service timestamps log datetime msec localtime service password-encryption hostname < Router Naam > boot-start-marker boot-end-marker logging buffered 51200 warnings no logging rate-limit enable secret < The Password > aaa new-model aaa authentication … Continue reading Configure a Cisco Router for Bridge usage