CPU utlization of a single voip cirtcuit

2000-11-09 Thread Yuen Me

Our company is planning to implement VoIP on top of existing cisco network 
and I'm conducting network audit. Can somebody advise me the resource 
consumption in term of CPU utilization / Buffer utilization across all 
platforms (26XX ... 75xx) for a single voip circuit ? My logic if my current 
4700 spends 40% CPU utilization on pure data and each voice circuits (50 
pps) consumes 2%, I should not put more than 10 circuits to keep cpu in the 
safe zone of 60%. Similar logics for buffer.

The assumption of voice circuit is: VoIP, G.729r8, no VAD.

If you have conducted such kind of network audit for voip implementation 
before, appreciate if you can share with me privately. Thanks.

Yuenme


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On-demand pppoe on 1750

2000-11-15 Thread Yuen Me

Hi, I've sucessfully setup pppoe on 1750 for the ADSL line. However it's 
"always on" nature costs a lot of tariff. How can I change it this pppoe 
into on-demand so that only when there is packet, ppp session will be 
brought up. IOS is 12.1

I find nothing related in "vpdn-group" and "int dialer". Even I set the 
"dialer idle-timeout = 20", the session never drops.

Yuenme
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Transparent Briding over Frame Relay Hub and Spoke

2000-05-28 Thread Yuen Me

Hi all,

I tend to conclude the following statement and pls confirm whether I'm 
right:

"point to point" subinterface is the only option in the HUB to allow spoke 
to spoke packet forwarding happen in transparent bridging environment.

I've tried physical interface and multipoint subinterface on hub. I've 
tried:
- making the hub as the root bridge
- extensive map statements in the hub and spoke with "broadcast" keyword

All of them fail. I believe transparent bridge does not allow the packet 
received on one interface to be forwarded to the same interface again, even 
though the paths (DLCI) are different.

Yuenme


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RE: Transparent Briding over Frame Relay Hub and Spoke

2000-05-29 Thread Yuen Me

I would say not as trival as it looks. As I emphasized before, spoke to 
spoke connectivity is the goal. While neither physical interface, nor 
multipoint interface in the HUB will make spoke to spoke happen. No matter 
how many "frame-relay map bridge ??? broadcast" is put in.

It's neither a spanning tree issue. All ports in all bridges are in 
forwarding state.

Appreciate if anyone can show me a working config (again spoke to spoke) 
with hub config other than point to point subinterface

Yuenme

>From: "Ryan Moffett" <[EMAIL PROTECTED]>
>Reply-To: "Ryan Moffett" <[EMAIL PROTECTED]>
>To: "Yuen Me" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>
>Subject: RE: Transparent Briding over Frame Relay Hub and Spoke
>Date: Sun, 28 May 2000 19:54:24 -0400
>
>You can configure transparent bridging over Frame Relay point-multipoint
>interfaces.
>
>See:
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/wan_c
>/wcfrelay.htm#xtocid2427346
>
>Basically, on the point-multipoint subinterface, you need to associate the
>DLCI's with a bridge group using the "frame-relay map bridge" command.   An
>example is given here:
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/wan_r
>/wrfrelay.htm#xtocid18778220
>
>Ryan
>
>-Original Message-
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>Yuen Me
>Sent: Sunday, May 28, 2000 7:17 PM
>To: [EMAIL PROTECTED]
>Subject: Transparent Briding over Frame Relay Hub and Spoke
>
>
>Hi all,
>
>I tend to conclude the following statement and pls confirm whether I'm
>right:
>
>"point to point" subinterface is the only option in the HUB to allow spoke
>to spoke packet forwarding happen in transparent bridging environment.
>
>I've tried physical interface and multipoint subinterface on hub. I've
>tried:
>- making the hub as the root bridge
>- extensive map statements in the hub and spoke with "broadcast" keyword
>
>All of them fail. I believe transparent bridge does not allow the packet
>received on one interface to be forwarded to the same interface again, even
>though the paths (DLCI) are different.
>
>Yuenme
>
>
>Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
>
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>
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RE: Transparent Briding over Frame Relay Hub and Spoke

2000-05-29 Thread Yuen Me

Thanks. These are partial config excluding ip stuff. Topology is as follows. 
The purpose is to bridge appletalk between a station on Spoke2's ethernet 
and the Spoke 1 BVI

HUB-SwitchSpoke1
  \
   \
\
 \Spoke2

HUB

decnet routing 9.4
decnet node-type routing-iv
!
interface Serial0
encapsulation frame-relay
clockrate 125000
ip address 193.1.1.4 255.255.255.0
no ip directed-broadcast
decnet cost 30
frame-relay map bridge 402 broadcast
frame-relay map bridge 403 broadcast
bridge-group 1
!
bridge 1 protocol ieee
bridge 1 priority 10
!

Spoke1

decnet routing 9.3
decnet node-type routing-iv
!
bridge irb
!
interface Serial0
no ip address
no ip directed-broadcast
encapsulation frame-relay
!
interface Serial0.304 point-to-point
ip address 193.1.1.3 255.255.255.0
no ip directed-broadcast
decnet cost 30
frame-relay interface-dlci 304
bridge-group 1
!
interface BVI1
no ip address
no ip directed-broadcast
appletalk cable-range 100-100 100.3
appletalk zone try
!
router eigrp 2497
redistribute ospf 2497 metric 100 1000 255 1 1500
network 193.1.1.0
!
bridge 1 protocol ieee
bridge 1 route appletalk
bridge 1 route decnet
bridge 1 route ip
no bridge 1 bridge ip

Spoke 2

decnet routing 9.2
decnet node-type area
!
interface Ethernet0
ip address 199.73.2.2 255.255.255.0
no ip directed-broadcast
decnet cost 10
bridge-group 1
!
interface Serial0
no ip address
no ip directed-broadcast
encapsulation frame-relay
!
interface Serial0.204 point-to-point
ip address 193.1.1.2 255.255.255.0
no ip directed-broadcast
decnet cost 30
frame-relay interface-dlci 204
bridge-group 1
!
bridge 1 protocol ieee
!




>From: "Ryan Moffett" <[EMAIL PROTECTED]>
>To: "Yuen Me" <[EMAIL PROTECTED]>
>Subject: RE: Transparent Briding over Frame Relay Hub and Spoke
>Date: Mon, 29 May 2000 18:52:56 -0400
>
>I have made this work before on several occasions.   Spoke to Spoke
>connectivity was not the goal, but it worked.  Please send me your
>configuration files and if you want, I can help.
>
>
>-Original Message-
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>Yuen Me
>Sent: Monday, May 29, 2000 2:35 PM
>To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
>Subject: RE: Transparent Briding over Frame Relay Hub and Spoke
>
>
>I would say not as trival as it looks. As I emphasized before, spoke to
>spoke connectivity is the goal. While neither physical interface, nor
>multipoint interface in the HUB will make spoke to spoke happen. No matter
>how many "frame-relay map bridge ??? broadcast" is put in.
>
>It's neither a spanning tree issue. All ports in all bridges are in
>forwarding state.
>
>Appreciate if anyone can show me a working config (again spoke to spoke)
>with hub config other than point to point subinterface
>
>Yuenme
>
> >From: "Ryan Moffett" <[EMAIL PROTECTED]>
> >Reply-To: "Ryan Moffett" <[EMAIL PROTECTED]>
> >To: "Yuen Me" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>
> >Subject: RE: Transparent Briding over Frame Relay Hub and Spoke
> >Date: Sun, 28 May 2000 19:54:24 -0400
> >
> >You can configure transparent bridging over Frame Relay point-multipoint
> >interfaces.
> >
> >See:
> >http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/wan_
>c
> >/wcfrelay.htm#xtocid2427346
> >
> >Basically, on the point-multipoint subinterface, you need to associate 
>the
> >DLCI's with a bridge group using the "frame-relay map bridge" command.   
>An
> >example is given here:
> >http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/wan_
>r
> >/wrfrelay.htm#xtocid18778220
> >
> >Ryan
> >
> >-Original Message-
> >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> >Yuen Me
> >Sent: Sunday, May 28, 2000 7:17 PM
> >To: [EMAIL PROTECTED]
> >Subject: Transparent Briding over Frame Relay Hub and Spoke
> >
> >
> >Hi all,
> >
> >I tend to conclude the following statement and pls confirm whether I'm
> >right:
> >
> >"point to point" subinterface is the only option in the HUB to allow 
>spoke
> >to spoke packet forwarding happen in transparent bridging environment.
> >
> >I've tried physical interface and multipoint subinterface on hub. I've
> >tried:
> >- making the hub as the root bridge
> >- extensive map statements in the hub and spoke with "broadcast" keyword
> >
> >All of them fail. I believe transparent bridge does not allow the packet
> >received on one interface to be forwarded to the same interface again, 
&g