I see --Thank You Paul Regards Anantha Subramanian Natarajan
On Fri, May 14, 2010 at 11:16 AM, Paul Stewart <[email protected]> wrote: > Maybe priority queue is a misuse of the term. But my understanding is that > in IOS, there is a special queue for packets tagged internally as > pak_priority (all routing protocols except bgp). This shields them from > going to class-default and effectively gives them access to the 100% - max > reservable bandwidth. Therefore they get priority to the tx-ring(but not > necessarily cassified in the priority queue I suppose?). I'm not sure how > different the ASA is in this regard. > > > > > On May 14, 2010, at 11:41 AM, Brandon Carroll <[email protected]> > wrote: > > I'd have to revisit this, because it's been some time since I've done >> anything with it, but I recall something from the old QOS class about the >> max-reservable bandwidth is defaulted to 75% of the link bandwidth so that >> routing protocols and other traffic can have a little breathing room. Like >> I said, I'll have to revisit this, but I think this may be the case. I >> don't think routing protocol traffic actually uses the "priority" queue on >> Cisco routers, unless you classify the traffic and put it there. >> >> Sorry if I'm off base here, just thinking out loud. >> >> >> >> Regards, >> >> Brandon Carroll - CCIE #23837 >> Senior Technical Instructor - IPexpert >> Mailto: [email protected] >> Telephone: +1.810.326.1444 >> Live Assistance, Please visit: www.ipexpert.com/chat >> eFax: +1.810.454.0130 >> >> IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, >> Audio Tools, Online Hardware Rental and Classroom Training for the Cisco >> CCIE (R&S, Voice, Security & Service Provider) certification(s) with >> training locations throughout the United States, Europe, South Asia and >> Australia. Be sure to visit our online communities at >> www.ipexpert.com/communities and our public website at www.ipexpert.com >> >> Platinum Solutions Group (PSG) provides high-end consulting services with >> a primary emphasis on Cisco's Data Center Solutions, Service Provider >> Solutions, Unified Communications and Security-enabled infrastructures. Be >> sure to visit www.platinumsolutionsgroup.com. >> >> >> >> On May 14, 2010, at 5:37 PM, Paul Stewart wrote: >> >> I think this is not just an ASA thing. It seems that routing protocol >>> traffic is always handled by the priority queue on a router as well. >>> >>> >>> >>> On May 14, 2010, at 3:06 AM, Anantha Subramanian Natarajan < >>> [email protected] >>> >>>> wrote: >>>> >>> >>> Hi All, >>>> >>>> Was reading through Chapter 11(QOS) on the Cisco ASA:All-in-One >>>> Firewall,IPS,Anti-X, and VPN Adaptive security appliance" book and >>>> inferring >>>> the below sentence from that >>>> >>>> "Certain critical keep-alive packets such as EIGRP hello packets are >>>> never >>>> dropped even if they are not prioritized in the shaped traffic" >>>> >>>> Have a question on that, >>>> >>>> 1) Is all protocols hello packets treated that way in Cisco ASA and >>>> if so, >>>> how Cisco ASA keeps track of that to have this exception. >>>> >>>> Thanks for the help >>>> >>>> Regards >>>> Anantha Subramanian Natarajan >>>> >>>> _______________________________________________ >>> For more information regarding industry leading CCIE Lab training, please >>> visit www.ipexpert.com >>> >> >>
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