Cisco OSPF and Windows RRAS OSPF May 24, 2009
Posted by daakeung in Cisco, IT, Microsoft.Tags: cisco and windows ospf neighbours, cisco ios ospf, ISA OSPF, windows rras ospf
1 comment so far
I’ve been battling with getting Windows RRAS ospf and Cisco ios ospf to become neighbours for the past few days.
If you turn on ospf debug in windows and the following shows up :
Rejected an OSPF packet from x.x.x.x to 224.0.0.5 because the OSPF data length in the OSPF header was 48 but the length calculated from the IP Header fields was 60.
You should disable the following on the cisco ios:
router ospf 100
no capability lls
Also, if you are running ISA with RRAS you should disable “block fragmentation”
For more information:
http://technet.microsoft.com/en-us/library/cc302678.aspx#NetworkAndRoutingIssues
http://www.cisco.com/en/US/docs/ios/12_3/iproute/command/reference/ip2_c1g.html#wp1036468
Using CISCO IOS AUX port to access the console port on another device (reverse telnet) May 16, 2009
Posted by daakeung in Uncategorized.Tags: aux console, Cisco, ios, reverse telnet
4 comments
Setup a loopback interface:
int lo 1
ip address 10.1.1.1 255.255.255.255
line aux 0
transport input telnet
speed 9600
To access the aux interface, you telnet to the loopback address on port 2000+line#
for example:
sh line
Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
0 CTY – – – – – 0 0 0/0 –
I 1 TTY – inout – – – 0 0 0/0 –
5 AUX 9600/9600 – inout – – – 0 0 0/0 –
* 6 VTY – – – – – 78 0 0/0 –
7 VTY – – – – – 2 0 0/0 –
8 VTY – – – – – 0 0 0/0 –
9 VTY – – – – – 0 0 0/0 –
10 VTY – – – – – 0 0 0/0 –
telnet 10.1.1.1 2005
***UPDATED***
Using Cisco IOS to determine Serial Number May 8, 2009
Posted by daakeung in Cisco, IT.Tags: Cisco, ios, ios sn, serial number cisco, sn cisco
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Have any of you ever had to find out the S/N of a remote cisco ios device?
You can issue the following IOS command:
show inventory
This produces the PID, the MODEL number of the device and also the Serial Number, this can be useful when auditing your network.