Networking
Cisco WLC, LAP and option 43
26/06/10
It’s possible to provision WLC ip address to Cisco LAPs via DHCP option 43.
Since some documentation isn’t very clear I put here a quick note:
option 43 hex f108c0a80a05c0a80a14
The string must begin whith “f1”. Next two digits are the number of following bytes, 4 bytes for each IP address of WLC.
1 WLC = 04
2 WLCs = 08
3 WLCs = 0c --> decimal 12 converted in hex
Next 4, 8 or 12 bytes are the IP addresses of WLCs in hex.
Remember: 2 hex digits are 8 bits or 1 byte, one IP address is 32 bits or 4 bytes or 8 hex digits.
So if we have 2 controllers with IP 10.0.0.1 and IP 10.0.0.11 the correct configuration inside the scope is:
option 43 hex f1080a0000010a00000b
HERE the link to full document from Cisco website
HTH
Since some documentation isn’t very clear I put here a quick note:
option 43 hex f108c0a80a05c0a80a14
The string must begin whith “f1”. Next two digits are the number of following bytes, 4 bytes for each IP address of WLC.
1 WLC = 04
2 WLCs = 08
3 WLCs = 0c --> decimal 12 converted in hex
Next 4, 8 or 12 bytes are the IP addresses of WLCs in hex.
Remember: 2 hex digits are 8 bits or 1 byte, one IP address is 32 bits or 4 bytes or 8 hex digits.
So if we have 2 controllers with IP 10.0.0.1 and IP 10.0.0.11 the correct configuration inside the scope is:
option 43 hex f1080a0000010a00000b
HERE the link to full document from Cisco website
HTH
Cisco call manager, the birth
12/01/10
SAN JOSE, Calif. -- October 14, 1998 -- Cisco Systems, Inc. today announced it has signed a definitive agreement to acquire privately-held Selsius Systems, Inc. of Dallas, Texas. Selsius is a leading supplier of network PBX systems for high-quality telephony over IP networks.
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More infos on Wikipedia
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More infos on Wikipedia
This Computer Gave Birth to the Internet
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This Computer Gave Birth to the Internet
The first Internet connection, with UCLA's Leonard Kleinrock
More videos HERE
netcat
16/09/09
Netcat is a featured networking utility which reads and writes data across network connections, using the TCP/IP protocol.
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L'ho usato per realizzare dei semplici script che eseguono usa serie di comandi su router/switch. La sintassi è molto semplice, es.
nc.exe < script.txt >> nclog.txt
dove
script.txt
contiene i comandi da eseguire e
nclog.txt
contiene l'output della sessione.
Il prossimo passo sarà l'uso di expect per realizzare script un po' più intelligenti.
LINK
L'ho usato per realizzare dei semplici script che eseguono usa serie di comandi su router/switch. La sintassi è molto semplice, es.
nc.exe < script.txt >> nclog.txt
dove
script.txt
contiene i comandi da eseguire e
nclog.txt
contiene l'output della sessione.
Il prossimo passo sarà l'uso di expect per realizzare script un po' più intelligenti.
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Summary only available when permalinks are enabled. Read More...
RFC 1925 - The Twelve Networking Truths
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The truths described in this memo result from extensive study over an
extended period of time by many people, some of whom did not intend
to contribute to this work. The editor merely has collected these
truths, and would like to thank the networking community for
originally illuminating these truths.
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Law 2: In order to get good experience and build good working experience profile, you need to work in a better job
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