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Origami Around
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$LAYYYTER
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if i look back, i am lost
Jules of Nature
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BiDi Optical Transciever
The BiDi transceiver, or the bidirectional optical transceiver, is designed with the bidirectional transmission technology WDM (Wavelength Division Multiplexing) so you can obtain the transmission of optical channels on a fiber that propagates simultaneously in both directions.
In recent years we are seeing an exponential bandwidth demand for end users. The development of network architectures…
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Arista vs Checkpoint QSFP 100Gb
Arista vs Checkpoint QSFPÂ 100Gb
Making fiber optic link with 100 Gb/s optics, you have to consider FEC (Forward error correction)
Connection with different vendors can cause some issues with.
In this case we discuss about making a 100Gb/s link between Arista Switch and Checkpoint firewall.
The error correction under the 2 vendors are different and thankfully on Arista is possibly specify how we would use for…
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VoIP - Cisco Phones behind a FIREWALL
VoIP – Cisco Phones behind a FIREWALL
When you have to protect your VoIP CallManager in a secure zone of your lan you have to face two problem: SIP and NAT.
In our case we handle voip sessions through firewall by configuring an ACL with TCP/UDP port_set. For internal resources, we don’t use NAT mode, here you have the ports from phones to CM:
Destinaton portDescriptionUDP/32768-61000EPHEMERAL_port_rangeUDP/16384-32676RTP-SRTPT…
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The fairy tale of the VLAN internal allocation policy
The fairy tale of the VLAN internal allocation policy #Cisco #networkporn #NetworkAdministrator #VLAN #NetworkAdmin
Once upon a time there was a Cisco switch called CatOS, it had the power to transform its ports into a layer3 links, But it had a secret … vlan tale
…and yes the secret is this:
vlan internal allocation policy ascending
This conf command! You can find him in CatOS and on more recent IOS Cisco firmware.
When we configure a routed-port on a Cisco switch:
CatLab01(config)#int…
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https://glitchlist.com/2019/05/01/post-1/
“We have all the problems of a major theme park and a major zoo and the computers aren’t even on their feet yet” Ray Arnold, Jurassik Park’s
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