Tag Archives: cisco

Access-list mask or wildcard

Posted on 6 November 2017 by Robert

G’day all, today I was messing around with access-list.  And after getting my head around the weird subnets of rfc1918. Weird as in an A-class (/8) is reserved in A-space, B-class (/16) in reserved in C-space, and for the B-space … Continue reading →

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Error-Disable

Posted on 30 May 2017 by Robert

When a network port encounters an error. This port is automatically shutdown to ensure network stability. When error-disable is enabled. The predefined error are as follows; arp-inspection bpduguard channel-misconfig dhcp-rate-limit              gbic-invalid                 l2ptguard                   link-flap mac-limit link-monitor-failure loopback oam-remote-failure pagp-flap port-mode-failure psecure-violation … Continue reading →

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Cisco Express Forwarding

Posted on 7 January 2017 by Robert

Differences between IP CEF , fast forwaring and processor based forwarding. Continue reading →

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CCNP Books have arrived

Posted on 17 December 2016 by Robert

The 300-115 (switch)  book was already in my possession.  This week the last two books arrived; 300-101 (route)  and 300-135 (tshoot). For some time I was cramming labs from whichever tutorial I could lay my hands on. Now the study … Continue reading →

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