About vcjones

vcjones · 01-03-2012

Trying to control capacity utilization for guest users connecting to a 2960 switch. No problem for IPv4 users, but IPv6 is giving me fits. What I've found out by trial and error so far implies that there is just enough IPv6 smarts in a WS-C2960-24TT-...

vcjones · 07-22-2004

Experimenting with the new features in IOS 12.3(8)T and thought I finally had a Cisco solution to the classic fully redundant Internet connection using a pair of low cost (no BGP) ISPs. SAA (ping based routing) works great for detecting link down, th...

vcjones · 07-20-2004

Trying to get a fully redundant ISP connection using low cost DSL. No problem detecting link down with SAA (ping based routing), but a real problem getting NAT to bahave.When the active link goes down, the default route switches automagically, but it...

vcjones · 04-19-2004

A simple design requirement that I'm having trouble finding a useful solution to... Hopefully I'm merely overlooking something obvious...Background:Two dial-in servers using local authentication with about 100 lines each (ISDN PRI to 3640s).Spokes us...

vcjones · 06-20-2003

Wondering if anyone else has run into the situation where a router (2610) places an ISDN call (DDR) to a 3640. Everything works fine while the link is up, but when the 2610 takes down the link, it only disconnects at the 2610 end. Show ISDN status on...

vcjones · 02-15-2017

While technically correct, all "solutions" based on splitting the allocated prefix will only work on the public internet if the pieces are all at least a /24. No ISP is going to propagate a /25 or longer to their upstreams or peers, and any decent IS...

vcjones · 02-13-2017

A few quick comments... 1- Inbound load balancing and outbound load balancing are independent issues, and each requires its own solution. AS Path prepending only adjusts inbound traffic and it's effectiveness is dependent on how your upstreams are co...

vcjones · 02-12-2017

Short answer: yes, yes, and yes. Long answer: (yes) The coding referred to is the line coding, but (yes) can also include any other coding required/desired for better use of the channel, such as forward error correction built into classical satellite...

vcjones · 08-06-2009

As I said in my original response, your mileage may vary. On the last systems I tested (1811s running 12.4(15)XY5) changing the hostname in the config had no impact on ssh accessibility while failure to save the first key generated with a "copy run s...

vcjones · 08-06-2009

My experience to date: You need a hostname and a domain name configured in order to generate RSA keys. Once you generate the RSA keys, you need to "copy run start" to keep them over a reboot. Once they are saved, you can change/delete hostname and do...

Member Since	‎07-22-2002 07:36 AM
Date Last Visited	‎05-10-2018 07:10 PM
Posts	523
Total Helpful Votes Received	396

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IPv6 filtering/policing on 2960 switch

Getting NAT to behave in a low-end dual ISP setup

NAT to two ISPs - can it work?

Controlling multilink calls on a server

ISDN link stays up, but only at one end

While technically correct,

A few quick comments...

Short answer: yes, yes, and

Re: cann't access to router through SSH

Re: cann't access to router through SSH