oboehmer at cisco
Nov 8, 2005, 10:52 PM
Post #7 of 11
(4717 views)
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Souphonh,
the 3620 is definitly far to small for this job. 500 users with
256k/128k result in ~190 Mbit/sec or, assuming IMIX, 60k pps, much more
than the 3620 can handle. you want to look at a faster router, like the
37xx/38xx or a 7200/NPE for this type of application.
oli
Souphonh Phounsavath <mailto:souphonh [at] laopdr> wrote on Wednesday,
November 09, 2005 6:51 AM:
> Dear All,
>
> I am looking for small scale. The number of customers will be less
> than 1000. Customer will have bandwidth of 256Kbps for down stream
> and 128Kbps
> for up stream. I think if 3620 PPPoE can support about 500 active
> PPPoE
> sessions for that traffic, I can start with it. Please advice.
>
> Regards,
> Souphonh
>
> -----Original Message-----
> From: Oliver Boehmer (oboehmer) [mailto:oboehmer [at] cisco]
> Sent: Tuesday, November 08, 2005 6:41 PM
> To: Mounir Mohamed; Souphonh Phounsavath
> Cc: cisco-nas [at] puck
> Subject: RE: [cisco-nas] Cisco 3620 PPPoE session limitation
>
> And one important point: The 3620 will likely never be able to
> stustain
> the load for a significant number of pppoe sessions (assuming those
> are
> DSL customers).. You can likely terminate several hundreds idle
> sessions
> at the same time, but once traffic is sent over the sessions, CPU can
> max out.
>
> You always have two components to worry about:
>
> - control plane scalability (how many sessions at which rate)
> - fowarding plance performance (how much traffic is switched through
> the
> box)
>
> Either one or both are limiting factors, so you could easily reach the
> max with a single session transmitting at several Mbps per second on
> the 3620..
>
> oli
>
> Mounir Mohamed <> wrote on Tuesday, November 08, 2005 12:21 PM:
>
>> Yes, Your router Platform can use 800 interface but i want clear some
>> points, the 800 IDBs value is not for PPPOE only, NO this value for
>> (PPPOE, PPPOA, all interfaces) logical or physical, and there is
>> different IDBs (SW= Software HW=Hardware) and upon your router
>> output now you are using 7 HW and 11 SW which is totaly 18 - 800=
>> 782 IDBs it's good number for Compnay but not for ISP
>>
>> i hop that help :)
>>
>> Best Regards,
>> Mounir Mohamed
>>
>> On 11/8/05, Souphonh Phounsavath <souphonh [at] laopdr> wrote:
>>>
>>>
>>> Dear Mounir Mohamed,
>>>
>>>
>>>
>>> Thank you very much for your kindly assistance. I am really
>>> appreciate your help. The following is my output of show idb on my
>>> Cisco 3620:
>>>
>>>
>>>
>>> wbb_router#sh idb
>>>
>>>
>>>
>>> Maximum number of IDBs 800
>>>
>>>
>>>
>>> 11 SW IDBs allocated (2608 bytes each)
>>>
>>>
>>>
>>> 7 HW IDBs allocated (4720 bytes each)
>>>
>>> HWIDB#1 1 Ethernet0/0 (HW IFINDEX, Ether)
>>>
>>> HWIDB#2 2 Ethernet0/1 (HW IFINDEX, Ether)
>>>
>>> HWIDB#3 3 Ethernet0/2 (HW IFINDEX, Ether)
>>>
>>> HWIDB#4 4 Ethernet0/3 (HW IFINDEX, Ether)
>>>
>>> HWIDB#5 5 Virtual-Access1 (Serial, HW VACCESS)
>>>
>>> HWIDB#6 6 Virtual-Template11 (HW IFINDEX, Serial, HW VTEMPLATE)
>>>
>>> HWIDB#7 7 Loopback0 (HW IFINDEX)
>>>
>>>
>>>
>>> So, it has maximum number of 800 IDBs, and it has been allocated 7.
>>> Does it mean that we can use up to about 700+ PPPoE connection?
>>>
>>>
>>>
>>> Regards,
>>>
>>> Souphonh
>>>
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: Mounir Mohamed [mailto:mounir.mohamed [at] gmail]
>>> Sent: Tuesday, November 08, 2005 5:09 PM
>>> To: Souphonh Phounsavath
>>> Cc: cisco-nas [at] puck
>>> Subject: Re: [cisco-nas] Cisco 3620 PPPoE session limitation
>>>
>>>
>>>
>>> Dear Souphonh ,
>>>
>>>
>>>
>>> Regarding the PPPOE sessions supported it's based on 2 factors
>>>
>>> 1-CPE
>>>
>>> 2-Memory
>>>
>>> Also you can check the maximum number of Virtual-Access on 3620 by
>>> the
>>>
>>> following command:
>>>
>>> Router# show idb
>>>
>>> Maximum number of IDBs 10000 ---> Maximum number on 7204
>>>
>>> 1135 SW IDBs allocated (2624 bytes each)
>>>
>>>
>>>
>>> Regarding the IOS you can use this image
>>>
>>> c7200-js-mz.122-27.bin
>>>
>>>
>>>
>>> Best Regards,
>>>
>>> Mounir Mohamed
>>>
>>>
>>>
>>> On 11/8/05, Souphonh Phounsavath <souphonh [at] laopdr> wrote:
>>>
>>>>
>>>
>>>>
>>>
>>>> Dear All,
>>>
>>>>
>>>
>>>>
>>>
>>>>
>>>
>>>> I am looking for supported document regarding the maximum PPPoE
>>>> session if
>>>
>>>> we will use Cisco 3620 as PPPoE access server. In other words, what
>>>> is
>>>
>>>> maximum number of PPPoE clients can access to the router at the
>>>> same time?
>>>
>>>> The followings are my Router version:
>>>
>>>>
>>>
>>>>
>>>
>>>>
>>>
>>>> CPU: R4700
>>>
>>>>
>>>
>>>> RAM: 64MB
>>>
>>>>
>>>
>>>> Flash: 16MB
>>>
>>>>
>>>
>>>> IOS: file: c3620-jk8o3s-mz.122-17
>>>
>>>>
>>>
>>>>
>>>
>>>>
>>>
>>>> If you have some ideas related to this, please advice.
>>>
>>>>
>>>
>>>>
>>>
>>>>
>>>
>>>> Regards,
>>>
>>>>
>>>
>>>> Souphonh
>>>
>>>>
>>>
>>>>
>>>
>>>> _______________________________________________
>>>
>>>> cisco-nas mailing list
>>>
>>>> cisco-nas [at] puck
>>>
>>>> https://puck.nether.net/mailman/listinfo/cisco-nas
>>>
>>>>
>>>
>>>>
>>>
>>>>
>>
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