any suggestion for networktool

Hi all Any tool can help to collect destination ip in graph for different location? eg: Germany Thank you so much

need help about free bandwidth graph program

Hi all Do you know any opensource program bandwidthgraph by ipaddess? Thank you

can you share ipv6 addressallo cation

Hi all I am searching information about ipv6 addressallocation for /32 Any experience and advice can be shared eg: loopback. peer to peer, Thank you so much

bgp for ipv6 question

Hi all Can I know how many ipv6 full bgp table routes now? how many memory can run one ipv6 full bgp table? how many peer for ipv6 in Router reflector you suggest? Do you suggest to separate the ipv4 and ipv6 in router reflector? Thank you for your info

need help 40 G

Hi all I would like to ask any free program/method can test 40G I tested it by ip erf program but it is not over 20G Thank you

need help about 40G

Hi all Do you have experience in 40G equipments eg: switch and NIC? Any brand name is reliable Thank you so much

please helpconfederation and ibgp question

Hi all I would like to ask questions aboutconfederation and ibgp We know confederation from nanog achieve 101,102 and setup lab. bgp and ibgp can work properly but not sure we are doing right. We have quesions 1/ for the annoucing networks, do we have to announce it in border routers? eg: bor

need help about bgd and ospf

Hi all Can I have questions about bgp and ospf 1/ Do I have to redistrt bgd in ospf to make ospf to know which upstrem bgp routers to go out 2/ If yes, how many routes can ospf database handle as one full bgp table is about 400,000 routes 3/ When we have 8 ospf routers to run "redistrubt bgp",

any sites about interent networkissue

Hi Yesterday I have internet nework issue. I checked our interent providers but their answers are fine But the traceroute can't reach to some desintations. eg: gogle and stopped somewhere Any websites can provide about network issue Thank you

packet question

Hi Can I know what tools can investigate the small packets? Thank you

Re: bgp question

Jan 18, 2012 at 5:58 AM, Deric Kwok wrote: >> ls it supporting equally multipath in different bgp connections? > > Most software routing protocols have support for this in their RIBs, > but the actual forwarding ability of the underlying kernel will > determine the support for this

Re: bgp question

: > On Tue, 10 Jan 2012, Deric Kwok wrote: > >> When we get  newip, we should let the upstream know to expor it as >> there should have rule in their side. > > > Correct.  Ideally, two things happen: > 1. You tell your upstreams and peers about the new space, and th

bgp question

Hi all When we get newip, we should let the upstream know to expor it as there should have rule in their side. how about upstream provider, does they need to let their all bgp interconnect to know those our newip? If no, Can I know how it works? If they don't have rules each other, ls it any p

Any tools to help network security

Hi We discover there are so many (source) ip not belonging to our network to go to outside. We can block it but don't know how to locate the source. Any tools can be easily found out. Thank you

Any recommended router. They are reliable and have good support.

Hi Can I know any selection of Linux routers except cisco / juniper? They are reliable and have good support provided We would like to get one for testing. Thank you

mtu question. more should be better, right?

Hi all When I setup the server mtu as 9100. why I have to configure the switch mtu 9300 to make it working? What this extra 200 bytes is for what purpose? ls it standard? What is disadvantage of setting our all internal networks (host / equipment) mtu more than 1500? Thank you for your advice.

Re: the route is not in our bgprouter

d the answer then try talking to > your provider. > > Regards > Patrick > > > On 25/10/2011 13:26, Deric Kwok wrote: >> >> Hi >> >> When we try to reach to outside ip, this route doesn't have in our bgp >> router >> >> How can we check whether it doesn't advertise from our upstream to us? >> >> Any web site and tools can help? >> >> Thank you >> > > >

the route is not in our bgprouter

Hi When we try to reach to outside ip, this route doesn't have in our bgp router How can we check whether it doesn't advertise from our upstream to us? Any web site and tools can help? Thank you

Can this bgp work?

Hello We would like to split our network advertising with same AS no. in different our bgp routers to same or different upstream provider eg: 66.70.0.0/20 in bgpRouterA 67.170.0.0/20 in bgpRouterB 174.70.0.0/20 in bgpRouterC ls it working? Thank you

network issue help

Hi There is problem in our network. The connection is disappearing. ls it about lop ing? How can I check it in switch? ls spammingtree disable by default? Thank you so much

32 and directallocate

Hi I have the following questions. hope you can help 1/ In ipv6 /32. ls it same as ipv4 /32 2/ If our company is using our ISP AS and their IP for providing internert ds line service, can we transfer those ip from them to us when we change other provider? 3/What is meaning directallcoate? Than

Re: website in ipv6

Thank you all Two questions: If I get the HE as upstream to advertsie our ipv6, 1/ Do we still have www.tunnelbroker.net as tunneling connection? 2/ All the internet users can access our ipv6 website? Thank you On Tue, Jun 28, 2011 at 2:09 PM, Kenny Sallee wrote: >> >> > > >> > I did this by

Re: AS and advertisen questions

was-in".  Here's a breif > doc from Cisco on configuring this > http://www.cisco.com/image/gif/paws/112236/allowas-in-bgp-config-example.pdf > > David. > > On Sat, Jun 25, 2011 at 9:39 PM, Joel Jaeggli wrote: >> >> On Jun 25, 2011, at 6:03 PM, Deric Kwok wrote:

website in ipv6

Hi all I am trying to configure website for testing ipv6 Just wander how internet users eg: DSL users can visit this website and any people can access this website over the world Thank you

AS and advertisen questions

Hi Can we use same AS to advertise different networks in different location? We would like to use Seattle as production network and New York as testing eg: Seattle: network 66.49.130.0/24 New York: network 67.55.129.0/24 and ipv6 network. Thank you

Re: whoi modify question

ger, then your customer would need to get an >>> ASN (autonomous system number) and then you could register the network to >>> them. >> >> negative, blocks are swiped at /29 and larger. >> >>> More info here: https://www.arin.net >>> >>&

whoi modify question

Hi My boss wants me to resign part of ip /25 to customer For the whois record to this customer, how can I do it? Thank you

ip 6 questions

Hi Our company will prepare ipv6. I have the following questions We will apply ipv6 from ARIN and try to use it in hosting business 1/ Can we use it in our current AS which is using ipv4? If not. Do we have to apply new AS? 2/ Can arin not allow us to apply ipv4 for the future after we apply i

rwhois website

Hi all I am trying to use http://www.rwhois.net/rwhois/prwhois.html to check my rwhois server but it is not reachable now Do you know why the websie is not in existing? and how can i check it Thank you

switch networking help

Hello I would like to ask general question about switch speed experience. How can I increase speed in switch port? ls it to combine more than one port? Any other solution? In combing ports, what are the advantages and disadvantages? Any info and experience. Thank you for your sharing.

need help about switch montior

Hi ls there any program/way to monitor the switch port/switch status when it reaches to certain bandwidth? Thank you so much

download speed very fast.

Hi all Do you know about sppedboost? Why it can suddenly burst to higher transfer rate from first 10M Can you share what equipment behinds to make it work? eg: cisco, juniper? Thank you so much

switch about routing p

Hi I read switch that supports PIM / ESRP / VRRP What are they? Thank you

mtu question

Hi I just see that the mtu in lo is different from standard eth 1500 Any meaning of it? eg: Standard eth 1500 in linux. lo mtu 16436 in solaris. lo mtu is 8232 How about cisco / juniper loopback? Thank you so much

Anyone can share the Network card experience

Hi Anyone can share the Network card experience ls onborad PCI Expresscard better or Plug in slot PCI Express card good? How are their performance in Gig transfer rate? Thank you so much

fibr question - Please help

Hi all I don't have two fibr card so that I can't test it If i have one setting as mode "NOT negot, one is using AU To mode Can they ping each other? Thank you for your help

pls help about mtu setting again

Hi Thank you for your reply about DSL mtu Now I have question about internet cable connection. ls it same as DSL? I tested it in my friend cable connection. 1470 is fine but 1480 is problem. Why it needs header in cable connection also? C:\Documents and Settings\deric>ping yahoo.com -f -l 1470

ls my modem or DSL company issue? 1300 not good but 1200 is fine

Hi It is very nice that Ina replied me about mtu help Now I am using ping to check but not sure it is my modem or DSL company issue? C:\Documents and Settings\derek>ping yahoo.com -f -l 1300 Pinging yahoo.com [98.137.149.56] with 1300 bytes of data: Packet needs to be fragmented but DF set. Pa

pls help about mtu setting

Hi My DSL company asks me to set the modem 146 2 and my old company used 14 92 What is the different? Why it is not standard 1 500? Thank you

any suggestion about ppp device

Hi Any suggestion about dsl ppp modem? How can I test it? or everyone should be same Thank you so much

useful bgp example

Hi My company will get 2 upstream provider. We will plan 2 routers and each router to connect one provider to use bgp for redundant. Do you have any useful bgp example and website to set it up? Thank you for your help

Re: dark fiber

Can I have question? What is dark fiber? Thank you On Wed, Feb 10, 2010 at 5:08 PM, James Jones wrote: > I am doing some researchis there a way to find out where there is dark > fiber and who own's it? > >

Re: domain registra question

trars/de-accredited-registrar-transition-procedure-01oct08.pdf> > [PDF, >121K] > > > On Sat, Jan 30, 2010 at 10:07 PM, Deric Kwok wrote: > >> Hi >> >> We are doing hosting and >> >> We are interested in doing Domain registra >> >> Could you provide more info? >> >> Thank you >> >> >

domain registra question

Hi We are doing hosting and We are interested in doing Domain registra Could you provide more info? Thank you

why it happens short packet. Which network device is problem?

Hi all I got the following message. UDP: bad checksum. From 67.204.26.203:1054 to 66.49.0.97:55290 ulen 43 UDP: short packet: From 67.55.92.141:23801 30368/46 to 66.49.0.0:24617 What is this meaning? Which network device is problem? Why it happens in the network? Thank you

Re: how it routes and network question

Hi Bruce Thank you so much to explain me in detail. I would like to know about this it in case i can get another hosting company Yes. I think the netmask should be 255.255.255.255 1/ but why they are using this netmask setting? save ip address? then does the router handle many routes in this set

how it routes and network question

Hi I recently get two dedicated servers in hosting company the ip address of the server is eg: 192.168.32.4/32 and 192.168.57.2/32 I try to check the gateway but it seems no any trace command in the server. hosting company is using dhcp in those servers network configuration. I have concern and

Optical fiber question

Hi My provider said they can provide single / mulit mode Optical fiber Apart from the length and cost different, what is the Adv/Disadv between them for our connection? Thank you

need your suggestion about switch

Hi I am requested to get not brand list switch how can I test it? any software or methods eg: reliable speed or any need Thank you so much

need help in bandwidth

Hi all Any better ways to contr ol the bandwidth? and how? eg: in hardware : switch, router or software: iptables...tc, access-list Thank you for your help

Data centre info

Hi all Any suggestion about data center 1/ to put on the switch in rack? eg: top. middle or bottom position 2/ There is no raise floor - adv - disadv Thank you for your information

Re: real hardware router VS linux router

Anymore success to use multiple CPU to bind NIC to increase the performance Thank you On Sun, Feb 22, 2009 at 4:52 AM, Nathan Ward wrote: > On 22/02/2009, at 8:27 AM, Leen Besselink wrote: > > If you had to choose, it's probably smarted to go with OpenBSD, it has a >> lot better integration of

Can I know how this network works (resend)?

Hi all main router- 3 static routes ip route 192.168.0.0/24 10.0.0.1 (routerA) ip route 192.168.1.0/24 10.0.0.2 (routerB) same switch ---telecom company---client request ip route 192.168.2.0/24 10.0.0.3 (routerC) Diagram === ---routerA--- main

Can I know how this network works out?

Hi all main router- 3 static routes ip route 192.168.0.0/24 10.0.0.1 (routerA) ip route 192.168.1.0/24 10.0.0.2 (routerB) same switch ---telecom company---client request ip route 192.168.2.0/24 10.0.0.3 (routerC) Diagram === ---routerA--- ma

switch speed question

Hi Can you share your experience what is fastest Gig switch? I see there is CEF feature in cisco. ls it big different when i enable it in switch vs other switch? ls there any problem? Thank you

real hardware router VS linux router

Hi All Actually, what is the different hardware router VS linux router? Have you had experience to compare real router eg: cisco VS linux router? eg: streaming speed... tcp / udp Thank you for your information

Networking performance

Hi I would like to ask your professional experience about switch throughput I have Gig Switchs eg: H P3400 /3500, cisco c4 948../ dlink In their spec, they said that it can handles Gig So far, I couldn't see their ports are used up over 200M in mrtg graph when I try to transfer 3G size files to f