Monthly Archives: April 2012

New “private” network

Good news for service providers that faced with issue of necessarily NAT from client network to client network, from client network to provider network and etc. They faced situations where networks from RFC 1918 is not enough. The new RFC 6598 wants to help them and defines new “private” network, that can be used … Continue reading »

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CCIP retired

It is continuation of last post (about CCNP SP). Cisco thought that CCIP (and almost of all its exams) outdated. The new certification (CCNP SP) was came, so you can take CCIP till October 29 2012 only, BGP, MPLS (and MPLS+BGP) exams could be passed till July 27 2012. It is not so bad news … Continue reading »

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New Cisco Certification – CCNP® Service Provider

Cisco has been announced the new certification of Professional level. You have to pass 4 new exam – service provider routing (642-883 SPROUTE), service provider advanced routing (642-885 SPADVROUTE), service provider Next-Generation Core Network Services (642-887 SPCORE), Next-Generation Egde Network Services (642-889 SPEDGE). Also, you must be CCNA SP to have possibility pass this exam. … Continue reading »

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IRF from HP and other technologies for unified data center

I heard that HP has technology like Qfabric from Juniper or Fabric Extender from Cisco. It is IRF. You can read some things about these technologies in the Pepelnjak`s blog, but I allow myself to make short description about it.

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Cisco SSH Denial of Service Vulnerability

If you used Cisco router as border or vpn concentrator (that is somebody has access to it from Internet), you would update software near time. Remote attacker could exploit this vulnerability by attempting a reverse SSH login with a crafted username

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