comments in-line: -----Original Message----- From: MADMAN [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 13, 2003 9:36 AM To: Vicky Mair Cc: [EMAIL PROTECTED] Subject: Re: FW: HSRP question [7:62941]
Vicky Mair wrote: > true enough....i can just image in the event of a storm (mcast, bcast or spt > loop) what would happen on that segment, specially running ip phones ;-) > then again what you guys are doing could be (a) politically driven (b) > transition phase. what about using auxvlan if indeed you guys are using ip > phones. > > if my memory serves me correct aren't packets process switched between > primary and secondaries ? Yes by default packets are process switched between secondaries. got that call a few times, CPU is really busy, only to see all these secondaries. "ip route-cache same-interface" helps a lot. ------------------ yikes! Yes secondaries are often driven by layer 8 issues, networks that grew out of control, cheezy ways to implement "VLANS" etc... --------------------- amen to that.... Auxvlans are switch specific, at least I'm pretty sure. ------------------ ....my auxvlan comment was directed more towards c6k/catos...native ios does not supports voice (t1/fxs...etc) at least the last time we looked at it....in our case we run hybrid on dist and non-l2 on core. we keep it simple. /vicky Dave > > thinking out loud :) > > > regards, > /vicky > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Larry Letterman > Sent: Wednesday, February 12, 2003 10:38 PM > To: [EMAIL PROTECTED] > Subject: Re: HSRP question [7:62941] > > > Issues I have with secondary ip address's : > > In the sh ip int br command, the 10.x.x.x secondary on the below interface > does not show up.... > > The dhcp request for that interface will advertise out the primary interface > not the secondary address, so it is extremely difficult to get the secondary > ip address's a dhcp address.... > > It adds a lot of overhead to the interface connection tables and hsrp can > act > strange > on certain routers, especially older routers with resource limits... > > interface FastEthernet1/0 > description 590 Brennan St. > ip address 10.17.212.2 255.255.255.0 secondary > ip address 171.70.34.3 255.255.255.0 > no ip redirects > arp timeout 1740 > standby priority 105 preempt > standby ip 171.70.34.1 > standby track Se6/0/0 > standby 2 priority 105 preempt > standby 2 ip 10.17.212.1 > standby 2 track Se6/0/0 > hold-queue 150 in > > > sjbrn-gw1#sh ip int br > Ethernet0/0 192.168.54.131 YES NVRAM up > up > FastEthernet1/0 171.70.34.3 YES NVRAM up > up > Serial6/0/0 171.68.2.22 YES NVRAM up > up > > > > > > > > > Larry Letterman > Network Engineer > Cisco Systems > > > ----- Original Message ----- > From: "Kelly Cobean" > To: "Larry Letterman" ; "Cisco groupstudy" > > Sent: Wednesday, February 12, 2003 7:01 PM > Subject: RE: HSRP question > > > >>Larry, >> Care to elaborate a little on the downside to doing this? We're doing >>it in our network but I'd love to present some reasons why we shouldn't > > and > >>start looking at some proper VLAN config's. Right now we have something >>like 6 class-c networks configured on a single interface of each of our >>routers. I know it creates a really overpopulated broadcast domain...What >>else should I be considering? Thanks. >> >>Kelly Cobean >> >>-----Original Message----- >>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of >>Larry Letterman >>Sent: Wednesday, February 12, 2003 7:31 PM >>To: MADMAN; CCIE FUN >>Cc: [EMAIL PROTECTED] >>Subject: Re: HSRP question >> >> >>I have run hsrp on primary and secondary address's and it >>works.. >>However , I support Dave's thoughts that I dont like to do >>it for prduction >>networks or for long periods of time... >> >>Larry Letterman >>Network Engineer >>Cisco Systems >> >> >>----- Original Message ----- >>From: "MADMAN" >>To: "CCIE FUN" >>Cc: >>Sent: Wednesday, February 12, 2003 3:29 PM >>Subject: Re: HSRP question >> >> >> >>> Yes you can do this but I wouldn't design a network >> >>with secondaries. >> >>> Just because you can doesn't mean you should. >> >>Secondaries should be >> >>>used only for temporary situations, converting ip >> >>addresses for example. >> >>> have fun >>> >>> Dave >>> >>>CCIE FUN wrote: >>> >>>>Hi all >>>>I have two routers running HSRP for a network subnet >>>>lets say for e.g 1.1.1.0/24 on E0 of both the routers. >>>> >>>>now can i add secondary address to these routers on >>>>Interface E0 and also run HSRP for these secondary >>>>address. >>>>I want to add about 10 secondary address. >>>>how will the HSRP config be. Can i run HSRP for >>>>multiple secondary addresses on these routers. >>>> >>>>thanks >>>> >>>> >>>> >>>>__________________________________________________ >>>>Do you Yahoo!? >>>>Yahoo! Shopping - Send Flowers for Valentine's Day >>>>http://shopping.yahoo.com >>>>. >>> >>>-- >>>David Madland >>>CCIE# 2016 >>>Sr. Network Engineer >>>Qwest Communications >>>612-664-3367 >>> >>>"You don't make the poor richer by making the rich >> >>poorer." --Winston >> >>>Churchill >>>. >>> >> >>____________________________________________________________ >>. -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "You don't make the poor richer by making the rich poorer." --Winston Churchill Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=62984&t=62941 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
