About Peter Paluch

Peter Paluch · 06-29-2016

Dear friends, I am facing a problem with one of our Catalyst 4507 and a line card refusing to power devices through PoE. Regarding the technical data, this is the setup of the switch: Switch# show module Chassis Type : WS-C4507RPower consumed by back...

Peter Paluch · 04-08-2016

A good friend of mine brought up an interesting question: We know that when a multicast IPv4 packet is encapsulated into an Ethernet frame, the destination MAC address is constructed using the OUI prefix of 01:00:5E and the lowmost 23 bits of the des...

Peter Paluch · 03-10-2016

Hello everyone, It appears that the new security measures implemented on CSC slightly impend its usability. I was just responding to a thread where I needed to explain how the longest prefix match works. I wrote a lengthy explanation, hit the Submit,...

Peter Paluch · 01-12-2016

Greetings to all, After the new editor has been put in place, many things have improved considerably. Thanks for that! One of the long-requested features is the quotation style, or "Blockquote", as the new editor calls it. I am extremely thankful it ...

Peter Paluch · 08-17-2015

Hi Amy et al.,Today, when I tried to delete a couple of notifications in my profile, I've found that this functionality is broken:After clicking on the 'Remove' button in the notification, this error message appears. I've tried the usual logout / cle...

Peter Paluch · 10-07-2024

Hello Hemant, A humble reminder for the logs - if it is possible to share them. Thank you! Best regards,Peter

Peter Paluch · 10-07-2024

@MHM Cisco World , you mention GRE in your original postand I think you typo usetunnel mode IPIPremove it please NO! Absolutely NOT! MHM, you cannot just blindly suggest that people change their existing working configurations! What is far more likel...

Peter Paluch · 10-06-2024

Hello Ali, Only one humble comment. You wrote: Based on this, I now agree with Peter that it's best to avoid using VRFs with dynamic routing protocols. Oh, I did not say anything of the sort : ) VRFs and dynamic routing protocols go hand in hand fabu...

Peter Paluch · 10-05-2024

Hello, An awesome question - and a very tough one! The hard truth is: This is always a compromise, and there is no perfect solution. Precisely as you mentioned, a switch does not perform deep packet inspection and so cannot be 100% sure that a packet...

Peter Paluch · 10-05-2024

Hello Ali, You are heartily welcome. Just to reinforce the topic, VRFs and routing protocols are not the same thing. A VRF is a separate copy of the routing table along with the interfaces that are associated with that routing table. This means sever...

Member Since	‎07-29-2005 12:50 AM
Date Last Visited	‎01-28-2025 01:42 AM
Posts	9,241
Total Helpful Votes Received	19039

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PoE issues on a Cat4507-R

How would a multicast be delivered with incongruent IP/MAC addressing?

Posts containing _AND_ rejected

Ideas on the Blockquote style

Unable to remove (delete) notifications

Re: GRE tunnel flapping issue.

Re: GRE tunnel flapping issue.

Re: EIGRP and VRF Issue

Re: How are DSCP values set?

Re: EIGRP and VRF Issue