Hi, I've been reading up on how to get two hiper arcs working, and there appear to be numerous ways... -static config where each arc owns half the cards -dynamic config where the nmc decides who owns what -variations on the above Which one actually works? I'm most interested in sharing the load, but an automatic failover would be nice too. I saw some old posts in the archives that mention that in some failure modes (where the arc doesn't fully fail but sticks in a reboot loop) the whole chassis basically takes a dive as ownership flip-flops between two arcs. Is that ironed out? What version of arc code starts to support all this stuff well? Thanks, Charles -- Charles Sprickman spork@inch.com
On Wednesday 31 July 2002 03:52 am, Charles Sprickman wrote:
Hi,
I've been reading up on how to get two hiper arcs working, and there appear to be numerous ways...
-static config where each arc owns half the cards -dynamic config where the nmc decides who owns what -variations on the above
Which one actually works? I'm most interested in sharing the load, but an automatic failover would be nice too. I saw some old posts in the archives that mention that in some failure modes (where the arc doesn't fully fail but sticks in a reboot loop) the whole chassis basically takes a dive as ownership flip-flops between two arcs. Is that ironed out?
What version of arc code starts to support all this stuff well? I hope you get an answer because I asked the same question a couple of weeks ago. =) -- Lewis Bergman Texas Communications 4309 Maple St. Abilene, TX 79602-8044 915-695-6962 ext 115
I have a little info for you guys on this... example of a chassis with 12 quads, 1 DSP, 1 ARC and Netserver...for argument sake.. In example - netserver owns all quad modems and arc owns DSP. Applicable modem commands are: set modem startslot<1-24> set modem density <all | slot#><4|24|30> Example command: Static Hiper ARC: disable nmc chassis_awareness set chassis slot 2-13 owner no set chassis slot 14 owner yes Netserver set modem startslot 2 set modem density 14 24 set modem s1-48 active save all reset all Dynamic allows NMC to handle the distribution of calls. Not sure but I think there was a need of modem pool tables to be designated...I think. At 07:47 AM 7/31/2002 -0500, you wrote:
On Wednesday 31 July 2002 03:52 am, Charles Sprickman wrote:
Hi,
I've been reading up on how to get two hiper arcs working, and there appear to be numerous ways...
-static config where each arc owns half the cards -dynamic config where the nmc decides who owns what -variations on the above
Which one actually works? I'm most interested in sharing the load, but an automatic failover would be nice too. I saw some old posts in the archives that mention that in some failure modes (where the arc doesn't fully fail but sticks in a reboot loop) the whole chassis basically takes a dive as ownership flip-flops between two arcs. Is that ironed out?
What version of arc code starts to support all this stuff well? I hope you get an answer because I asked the same question a couple of weeks ago. =) -- Lewis Bergman Texas Communications 4309 Maple St. Abilene, TX 79602-8044 915-695-6962 ext 115
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Steve Rivera IM: srivera711 Toll Free: (877)WRCANET x102 DIRECT: 732-833-2034 Fax available equipment to: (732)833-2115 for more product info got www.wrca.net
On Wednesday 31 July 2002 08:59 am, Stephen Rivera - WRCA.Net wrote:
I have a little info for you guys on this... example of a chassis with 12 quads, 1 DSP, 1 ARC and Netserver...for argument sake.. If I read him correctly, the commands and the sequence isn't the problem. I have found at least 8 examples in the docs and 5 more in the knowledgebase. The question is has anyone used some of these and what was the experience? Is there a reason _NOT_ to use chassis awareness which some of the examples require. Is there a problem with dynamic assignment by the NMC. Does the load balancing really work? How about the redundancy? Do the modems really transfer to the other HiperARC If so how long does the process take? Does one method transfer control quicker than another?
These are some of the questions that come to mind as I try to decide which of the examples to attempt. -- Lewis Bergman Texas Communications 4309 Maple St. Abilene, TX 79602-8044 915-695-6962 ext 115
We have some older software rev's so I'm not sure what has changed but usually on a fully loaded chassis I will disable NMC chassis awareness and install 2 arcs. I then configure 1 of the arc's to control the even numbered slots and the other to control the odd numbered slots. If we loose an arc I know about it via our monitoring system and can go in and setup the other arc to control the entire chassis and move IP pools, ospf sendpolicies, etc to the working card. This obviously requires some human intervention but rarely do we loose an arc. We have more problems with the DSP's. Todd -----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of Lewis Bergman Sent: Wednesday, July 31, 2002 10:35 AM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs - Examples On Wednesday 31 July 2002 08:59 am, Stephen Rivera - WRCA.Net wrote:
I have a little info for you guys on this... example of a chassis with 12 quads, 1 DSP, 1 ARC and Netserver...for argument sake.. If I read him correctly, the commands and the sequence isn't the problem. I have found at least 8 examples in the docs and 5 more in the knowledgebase. The question is has anyone used some of these and what was the experience? Is there a reason _NOT_ to use chassis awareness which some of the examples require. Is there a problem with dynamic assignment by the NMC. Does the load balancing really work? How about the redundancy? Do the modems really transfer to the other HiperARC If so how long does the process take? Does one method transfer control quicker than another?
These are some of the questions that come to mind as I try to decide which of the examples to attempt. -- Lewis Bergman Texas Communications 4309 Maple St. Abilene, TX 79602-8044 915-695-6962 ext 115 _______________________________________________ USR-TC mailing list USR-TC@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/usr-tc
Lets first talk about the versions of ARC code. What is the version of ARC code you are using, the answer depends on the arc code. -V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 7:47 AM Subject: Re: [USR-TC] two arcs
On Wednesday 31 July 2002 03:52 am, Charles Sprickman wrote:
Hi,
I've been reading up on how to get two hiper arcs working, and there appear to be numerous ways...
-static config where each arc owns half the cards -dynamic config where the nmc decides who owns what -variations on the above
Which one actually works? I'm most interested in sharing the load, but an automatic failover would be nice too. I saw some old posts in the archives that mention that in some failure modes (where the arc doesn't fully fail but sticks in a reboot loop) the whole chassis basically takes a dive as ownership flip-flops between two arcs. Is that ironed out?
What version of arc code starts to support all this stuff well? I hope you get an answer because I asked the same question a couple of weeks ago. =) -- Lewis Bergman Texas Communications 4309 Maple St. Abilene, TX 79602-8044 915-695-6962 ext 115
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Ok on the ARC you have three options. NMC SETTINGS Chassis Awareness: DISABLED Dynamic Slot Assignment: DISABLED DSA Idle Rebalancing: DISABLED If you have one ARC in the chassis, all you have to do is enable Chassis Awareness and disable everything else. If you have more than one ARC, you have two options. Option 1 Disable everything and configure modems static Option 2 Hot Stand by In here you enable one arc to static to own all the modems and insert the other ARC with NMC chassis awareness (all options enabled). On the ARC which owns all the modems static then enable all the three NMC options, save all and do not reboot. What this does is if the arc that owns all the dsp crashes (meaning if it does not come back after 5 min or more) the other HiPer arc will take over all the DSPs. The other options is to insert the first ARC card and enable all the options under NMC and leave it own all the cards, once it does insert the second ARC card with all the options enabled. In this configuration, slowly all the modems will be shared between cards over a period of time. -V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 10:44 PM Subject: Re: [USR-TC] two arcs
V said:
Lets first talk about the versions of ARC code. What is the version of ARC code you are using, the answer depends on the arc code. 5.3.100 for me. -- Lewis Bergman Texas Communications 4309 Maple ST. Abilene, TX 79602 915-695-6962
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Sorry.. I'm very new to the 3Com equipment... But can someone tell me the diff between the ARC and the NMC cards? What do the NMC cards do? What do the ARC cards do? -----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of V Sent: Friday, August 02, 2002 10:37 PM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs Ok on the ARC you have three options. NMC SETTINGS Chassis Awareness: DISABLED Dynamic Slot Assignment: DISABLED DSA Idle Rebalancing: DISABLED If you have one ARC in the chassis, all you have to do is enable Chassis Awareness and disable everything else. If you have more than one ARC, you have two options. Option 1 Disable everything and configure modems static Option 2 Hot Stand by In here you enable one arc to static to own all the modems and insert the other ARC with NMC chassis awareness (all options enabled). On the ARC which owns all the modems static then enable all the three NMC options, save all and do not reboot. What this does is if the arc that owns all the dsp crashes (meaning if it does not come back after 5 min or more) the other HiPer arc will take over all the DSPs. The other options is to insert the first ARC card and enable all the options under NMC and leave it own all the cards, once it does insert the second ARC card with all the options enabled. In this configuration, slowly all the modems will be shared between cards over a period of time. -V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 10:44 PM Subject: Re: [USR-TC] two arcs
V said:
Lets first talk about the versions of ARC code. What is the version of ARC code you are using, the answer depends on the arc code. 5.3.100 for me. -- Lewis Bergman Texas Communications 4309 Maple ST. Abilene, TX 79602 915-695-6962
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The Arc is a router. You have to have one. The NMC cards are management cards. They do things like SNMP, traps, alarms, etc. You don't actually have to have an NMC card in the chassis for the chassis to take calls. Seth ----- Original Message ----- From: "Shawn Mitchell" <shawnm@iodamedia.net> To: <usr-tc@mailman.xmission.com> Sent: Friday, August 02, 2002 9:21 PM Subject: RE: [USR-TC] two arcs
Sorry.. I'm very new to the 3Com equipment...
But can someone tell me the diff between the ARC and the NMC cards?
What do the NMC cards do? What do the ARC cards do?
-----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of V Sent: Friday, August 02, 2002 10:37 PM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs
Ok on the ARC you have three options.
NMC SETTINGS Chassis Awareness: DISABLED Dynamic Slot Assignment: DISABLED DSA Idle Rebalancing: DISABLED
If you have one ARC in the chassis, all you have to do is enable
Chassis Awareness and disable everything else.
If you have more than one ARC, you have two options.
Option 1
Disable everything and configure modems static
Option 2
Hot Stand by
In here you enable one arc to static to own all the modems and insert the other ARC with NMC chassis awareness (all options enabled). On the ARC which owns all the modems static then enable all the three NMC options, save all and do not reboot. What this does is if the arc that owns all the dsp crashes (meaning if it does not come back after 5 min or more) the other HiPer arc will take over all the DSPs.
The other options is to insert the first ARC card and enable all the options under NMC and leave it own all the cards, once it does insert the second ARC card with all the options enabled. In this configuration, slowly all the modems will be shared between cards over a period of time.
-V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 10:44 PM Subject: Re: [USR-TC] two arcs
V said:
Lets first talk about the versions of ARC code. What is the version
of
ARC code you are using, the answer depends on the arc code. 5.3.100 for me. -- Lewis Bergman Texas Communications 4309 Maple ST. Abilene, TX 79602 915-695-6962
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Hummm.... Can the Edge Server take the place of the ARC? -----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of Seth Jacobs Sent: Saturday, August 03, 2002 12:11 AM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs The Arc is a router. You have to have one. The NMC cards are management cards. They do things like SNMP, traps, alarms, etc. You don't actually have to have an NMC card in the chassis for the chassis to take calls. Seth ----- Original Message ----- From: "Shawn Mitchell" <shawnm@iodamedia.net> To: <usr-tc@mailman.xmission.com> Sent: Friday, August 02, 2002 9:21 PM Subject: RE: [USR-TC] two arcs
Sorry.. I'm very new to the 3Com equipment...
But can someone tell me the diff between the ARC and the NMC cards?
What do the NMC cards do? What do the ARC cards do?
-----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of V Sent: Friday, August 02, 2002 10:37 PM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs
Ok on the ARC you have three options.
NMC SETTINGS Chassis Awareness: DISABLED Dynamic Slot Assignment: DISABLED DSA Idle Rebalancing: DISABLED
If you have one ARC in the chassis, all you have to do is enable
Chassis Awareness and disable everything else.
If you have more than one ARC, you have two options.
Option 1
Disable everything and configure modems static
Option 2
Hot Stand by
In here you enable one arc to static to own all the modems and insert the other ARC with NMC chassis awareness (all options enabled). On the ARC which owns all the modems static then enable all the three NMC options, save all and do not reboot. What this does is if the arc that owns all the dsp crashes (meaning if it does not come back after 5 min or more) the other HiPer arc will take over all the DSPs.
The other options is to insert the first ARC card and enable all the options under NMC and leave it own all the cards, once it does insert the second ARC card with all the options enabled. In this configuration, slowly all the modems will be shared between cards over a period of time.
-V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 10:44 PM Subject: Re: [USR-TC] two arcs
V said:
Lets first talk about the versions of ARC code. What is the version
of
ARC code you are using, the answer depends on the arc code. 5.3.100 for me. -- Lewis Bergman Texas Communications 4309 Maple ST. Abilene, TX 79602 915-695-6962
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On Fri, 2 Aug 2002, Seth Jacobs wrote:
You don't actually have to have an NMC card in the chassis for the chassis to take calls.
No, but I think if you have two arcs in the chassis and you're doing load balancing (the last option V mentioned), you'll have problems if the NMC goes away. I'm fairly certain that any of the dual arc configs that are "dynamic" rely on the nmc, and if you lose the nmc, you're out of luck. In other words you have a second single point of failure that you tried to avoid by putting in a second arc. :) It seems that the static config is the best, split the dsps up between two arcs and if one fails (you do monitor the chassis, right :) ? ) you manually take over the cards in the remaining arc. Charles
Seth
----- Original Message ----- From: "Shawn Mitchell" <shawnm@iodamedia.net> To: <usr-tc@mailman.xmission.com> Sent: Friday, August 02, 2002 9:21 PM Subject: RE: [USR-TC] two arcs
Sorry.. I'm very new to the 3Com equipment...
But can someone tell me the diff between the ARC and the NMC cards?
What do the NMC cards do? What do the ARC cards do?
-----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of V Sent: Friday, August 02, 2002 10:37 PM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs
Ok on the ARC you have three options.
NMC SETTINGS Chassis Awareness: DISABLED Dynamic Slot Assignment: DISABLED DSA Idle Rebalancing: DISABLED
If you have one ARC in the chassis, all you have to do is enable
Chassis Awareness and disable everything else.
If you have more than one ARC, you have two options.
Option 1
Disable everything and configure modems static
Option 2
Hot Stand by
In here you enable one arc to static to own all the modems and insert the other ARC with NMC chassis awareness (all options enabled). On the ARC which owns all the modems static then enable all the three NMC options, save all and do not reboot. What this does is if the arc that owns all the dsp crashes (meaning if it does not come back after 5 min or more) the other HiPer arc will take over all the DSPs.
The other options is to insert the first ARC card and enable all the options under NMC and leave it own all the cards, once it does insert the second ARC card with all the options enabled. In this configuration, slowly all the modems will be shared between cards over a period of time.
-V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 10:44 PM Subject: Re: [USR-TC] two arcs
V said:
Lets first talk about the versions of ARC code. What is the version
of
ARC code you are using, the answer depends on the arc code. 5.3.100 for me. -- Lewis Bergman Texas Communications 4309 Maple ST. Abilene, TX 79602 915-695-6962
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Charles - I agree with you on this! ... it's not like I don't trust the code or anything ... but better safe than sorry (KISS!) Marshall Morgan Internet Doorway, Inc (aka NETDOOR) http://www.netdoor.com 601.969.1434 x28 | 800.952.1570 x28 | 601.969.3629 x28 | Fax 601.969.3838 ----- Original Message ----- From: "Charles Sprickman" <spork@inch.com> To: <usr-tc@mailman.xmission.com> Sent: Saturday, August 03, 2002 1:51 AM Subject: Re: [USR-TC] two arcs
On Fri, 2 Aug 2002, Seth Jacobs wrote:
You don't actually have to have an NMC card in the chassis for the chassis to take calls.
No, but I think if you have two arcs in the chassis and you're doing load balancing (the last option V mentioned), you'll have problems if the NMC goes away.
I'm fairly certain that any of the dual arc configs that are "dynamic" rely on the nmc, and if you lose the nmc, you're out of luck. In other words you have a second single point of failure that you tried to avoid by putting in a second arc. :)
It seems that the static config is the best, split the dsps up between two arcs and if one fails (you do monitor the chassis, right :) ? ) you manually take over the cards in the remaining arc.
Charles
Seth
----- Original Message ----- From: "Shawn Mitchell" <shawnm@iodamedia.net> To: <usr-tc@mailman.xmission.com> Sent: Friday, August 02, 2002 9:21 PM Subject: RE: [USR-TC] two arcs
Sorry.. I'm very new to the 3Com equipment...
But can someone tell me the diff between the ARC and the NMC cards?
What do the NMC cards do? What do the ARC cards do?
-----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of V Sent: Friday, August 02, 2002 10:37 PM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs
Ok on the ARC you have three options.
NMC SETTINGS Chassis Awareness: DISABLED Dynamic Slot Assignment: DISABLED DSA Idle Rebalancing: DISABLED
If you have one ARC in the chassis, all you have to do is enable
Chassis Awareness and disable everything else.
If you have more than one ARC, you have two options.
Option 1
Disable everything and configure modems static
Option 2
Hot Stand by
In here you enable one arc to static to own all the modems and insert the other ARC with NMC chassis awareness (all options enabled). On the ARC which owns all the modems static then enable all the three NMC options, save all and do not reboot. What this does is if the arc that owns all the dsp crashes (meaning if it does not come back after 5 min or more) the other HiPer arc will take over all the DSPs.
The other options is to insert the first ARC card and enable all the options under NMC and leave it own all the cards, once it does insert the second ARC card with all the options enabled. In this configuration, slowly all the modems will be shared between cards over a period of time.
-V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 10:44 PM Subject: Re: [USR-TC] two arcs
V said:
Lets first talk about the versions of ARC code. What is the
version of
ARC code you are using, the answer depends on the arc code. 5.3.100 for me. -- Lewis Bergman Texas Communications 4309 Maple ST. Abilene, TX 79602 915-695-6962
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The TC I have, dosn't have any cards that's marked as ARC. When I log into the Edge server and run some of the TC software, it see's both of the DSP cards. I know that this unit worked before it was pulled, but they were doing Windows Authentication with it. I found some software called RAM, it was what athenticated them, but I can't find any options for a RADIUS authentication. So anyone have any ARC's they are willing to part with? :) Also, what's up with V.92 on these TC units? -----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of Charles Sprickman Sent: Saturday, August 03, 2002 1:51 AM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs On Fri, 2 Aug 2002, Seth Jacobs wrote:
You don't actually have to have an NMC card in the chassis for the chassis to take calls.
No, but I think if you have two arcs in the chassis and you're doing load balancing (the last option V mentioned), you'll have problems if the NMC goes away. I'm fairly certain that any of the dual arc configs that are "dynamic" rely on the nmc, and if you lose the nmc, you're out of luck. In other words you have a second single point of failure that you tried to avoid by putting in a second arc. :) It seems that the static config is the best, split the dsps up between two arcs and if one fails (you do monitor the chassis, right :) ? ) you manually take over the cards in the remaining arc. Charles
Seth
----- Original Message ----- From: "Shawn Mitchell" <shawnm@iodamedia.net> To: <usr-tc@mailman.xmission.com> Sent: Friday, August 02, 2002 9:21 PM Subject: RE: [USR-TC] two arcs
Sorry.. I'm very new to the 3Com equipment...
But can someone tell me the diff between the ARC and the NMC cards?
What do the NMC cards do? What do the ARC cards do?
-----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of V Sent: Friday, August 02, 2002 10:37 PM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs
Ok on the ARC you have three options.
NMC SETTINGS Chassis Awareness: DISABLED Dynamic Slot Assignment: DISABLED DSA Idle Rebalancing: DISABLED
If you have one ARC in the chassis, all you have to do is enable
Chassis Awareness and disable everything else.
If you have more than one ARC, you have two options.
Option 1
Disable everything and configure modems static
Option 2
Hot Stand by
In here you enable one arc to static to own all the modems and insert the other ARC with NMC chassis awareness (all options enabled). On the ARC which owns all the modems static then enable all the three NMC options, save all and do not reboot. What this does is if the arc that owns all the dsp crashes (meaning if it does not come back after 5 min or more) the other HiPer arc will take over all the DSPs.
The other options is to insert the first ARC card and enable all the options under NMC and leave it own all the cards, once it does insert the second ARC card with all the options enabled. In this configuration, slowly all the modems will be shared between cards over a period of time.
-V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 10:44 PM Subject: Re: [USR-TC] two arcs
V said:
Lets first talk about the versions of ARC code. What is the version
of
ARC code you are using, the answer depends on the arc code. 5.3.100 for me. -- Lewis Bergman Texas Communications 4309 Maple ST. Abilene, TX 79602 915-695-6962
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----- Original Message ----- From: "Charles Sprickman" <spork@inch.com> To: <usr-tc@mailman.xmission.com> Sent: Saturday, August 03, 2002 1:51 AM Subject: Re: [USR-TC] two arcs
On Fri, 2 Aug 2002, Seth Jacobs wrote:
You don't actually have to have an NMC card in the chassis for the chassis to take calls.
No, but I think if you have two arcs in the chassis and you're doing load balancing (the last option V mentioned), you'll have problems if the NMC goes away.
Yes this would be correct. If you loose the NMC you will have serious issues because you loose the chassis awarness messages. Generally NMC is petty stable product, avoid using it to generate a lot of traps and logs, you will be fine else you may have to have a newer nmc 333.
I'm fairly certain that any of the dual arc configs that are "dynamic" rely on the nmc, and if you lose the nmc, you're out of luck. In other words you have a second single point of failure that you tried to avoid by putting in a second arc. :)
It seems that the static config is the best, split the dsps up between two arcs and if one fails (you do monitor the chassis, right :) ? ) you manually take over the cards in the remaining arc.
For normal operations static config is the best, for operations where you need to have a back up (SLA or customer requirement) then you may want to consider this load balace senario.
Charles
Seth
----- Original Message ----- From: "Shawn Mitchell" <shawnm@iodamedia.net> To: <usr-tc@mailman.xmission.com> Sent: Friday, August 02, 2002 9:21 PM Subject: RE: [USR-TC] two arcs
Sorry.. I'm very new to the 3Com equipment...
But can someone tell me the diff between the ARC and the NMC cards?
What do the NMC cards do? What do the ARC cards do?
-----Original Message----- From: usr-tc-admin@mailman.xmission.com [mailto:usr-tc-admin@mailman.xmission.com]On Behalf Of V Sent: Friday, August 02, 2002 10:37 PM To: usr-tc@mailman.xmission.com Subject: Re: [USR-TC] two arcs
Ok on the ARC you have three options.
NMC SETTINGS Chassis Awareness: DISABLED Dynamic Slot Assignment: DISABLED DSA Idle Rebalancing: DISABLED
If you have one ARC in the chassis, all you have to do is enable
Chassis Awareness and disable everything else.
If you have more than one ARC, you have two options.
Option 1
Disable everything and configure modems static
Option 2
Hot Stand by
In here you enable one arc to static to own all the modems and insert the other ARC with NMC chassis awareness (all options enabled). On the ARC which owns all the modems static then enable all the three NMC options, save all and do not reboot. What this does is if the arc that owns all the dsp crashes (meaning if it does not come back after 5 min or more) the other HiPer arc will take over all the DSPs.
The other options is to insert the first ARC card and enable all the options under NMC and leave it own all the cards, once it does insert the second ARC card with all the options enabled. In this configuration, slowly all the modems will be shared between cards over a period of time.
-V ----- Original Message ----- From: "Lewis Bergman" <lbergman@abi.tconline.net> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, July 31, 2002 10:44 PM Subject: Re: [USR-TC] two arcs
V said:
Lets first talk about the versions of ARC code. What is the
version of
ARC code you are using, the answer depends on the arc code. 5.3.100 for me. -- Lewis Bergman Texas Communications 4309 Maple ST. Abilene, TX 79602 915-695-6962
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participants (8)
-
Charles Sprickman -
Lewis Bergman -
Marshall Morgan -
Seth Jacobs -
Shawn Mitchell -
Stephen Rivera - WRCA.Net -
Todd Bertolozzi -
V