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Hello,While I was running some cable diagnostics I noted that Pair D is open.And I read somewhere that Pair D is responsible for Gigabit Ethernet. However, when checking the port status, it shows up as 1GB as expected. For that reason, what is the im...
Hello,Amid my studies I came across the following assignment:The applet must be triggered whenever someone exits configuration mode in a terminal session.This requirement applies to terminal sessions on cty and on vty lines.The applet must use CLI co...
Hello,I was wondering, whether it is possible to have multiple MAC addresses bound to same IP.And the switch takes the top to bottom approach until it finds a match.Lets say aaaa.bbbb.cc13 is the matching one.permit ip host 10.0.0.1 mac host aaaa.bbb...
Hello,In Leaf Spine Layer 3 we noted that uplinks from leaf to spine do maintain not the same number of advertised prefixes.And to my understanding the Spines do act as Router Reflectors; by default, an RR only advertises its single best path and con...
Hello,For some reason members of one HSRP group are not able to see each others Hello packets.Ping to check between physical IPs ok.HSRP MACAST IP is pingable.Standby debug packets show that Hello packets are sent.However, capturing the trunk interfa...
Great post.I appreciate it.It encourages me also to dive deeper into SNMPv3. And doing so I came across the following Cisco Security Advisory, which you may want to incorporate in your article:Cisco IOS and IOS XE Software SNMPv3 Configuration Restri...
I liked this article very much, very helpful.The only thought I would like to add is how to learn whether the switch is supporting distributed or centralized CEF - example Cisco Cat 9K#show cef int TenGigabitEthernet7/0/26TenGigabitEthernet7/0/26 is ...
No problem.Then I suggest reviewing DAI and DHCP, their dependencies and how they work togetherThere are some great Cisco Docs available explaining what we discussed, like this one: .https://www.cisco.com/c/en/us/support/docs/switches/lan-switch-soft...
Thank you both for your comments.Since I have not mentioned it explicitly in the beginning, please note that we have to factor in DAI and DHCP Snooping, and their relationship to each other.In general, Dynamic ARP inspection is inquiring DHCP snoopin...
