Routers and modems

Hi!
This is not a question - but more some thoughts and ideas.
I have for some days now been using iChat very much. I am using it in a TV-program where I stream my TV-signal out to families in Norway with help of iChat.
My experience is that when the modem is in BRIDGE mode - and I am using my own router - ie. Airport or Linksys WRT54g everything works very easy.
But when the modem is PPPoE modus - and I need to use ie DHCP on my local router or MAC -I can Chat, but the macs dont respond.
I have tried to us the Thomson Speedtouch 510 and the Cisco 800 series, but I need to set them in bridge to make it to work. Even routine every IP and ports to my streaming MAC does not work.
Anyone having comments to this?
Regards,
Jarle

HI Jarle,
I know that the Thomson Alcatel 510 is SIP aware and this will cause you problems.
http://www.ralphjohnsuk.dsl.pipex.com/page4.html
Scroll down to the SIP paragraph and the TExt in a BOx just a bit further down for a Fix
The 510 can also have the DHCP turned Off or an IP can be set to have a lease time of "infinite" if the DHCP server is still on.
As far As I can tell on mine it can not be set to "Bridge" or Pass through.
I am not sure about the Cisco but maybe James Weston will be able to help there.
Ralph

Similar Messages

VDSL modem/routers and FTTC self-install

Has anybody seen any more information related to this story? The possibility of using VDSL combined modem/routers and customer self-installation looks interesting.
http://recombu.com/digital/news/fibre-broadband-whos-doing-it_M10883.html#BT%20pilot%20could%20pave%...

Icarus wrote:
An FTTC Self Install Pack. Openreach had best start training an army of Broadband Boost trained engineers before that comes out.
Can see it now;
Customer: I was told I should get 76/19 but at best get 7/0.9
Engineer: Lets have a look at your set up.
Customer: Well, there is the master socket, well what I think is the master socket (the actual master socket is normally hidden away behind a wall unit) with an FTTC Filter, I then have a double adaptor with a 25 metre untwisted aliminium extension reel I bought from Wilko's. On the end of that is another FTTC Filter with 2 adaptors squeezed into it for my Sky Box, phone and another 10 metre untwisted aliminium extension reel which lead to yet another FTTC Filter with my VDSL Modem on it.
That's not funny, I've already seen so called engineer installed FTTC connections like that. Hate to think what it's going to be like with self install (Nightmare I think).

Fax and modem via Drop & Insert card (VWIC 2MFT-E1-DI)

Currently installing pair of 2610XM rtrs with Drop & Insert cards (VWIC 2MFT-E1-DI) between them.
At each side there is PABX connected via E1 to Drop&Inser card, and 2Mbs leased line between locations.
Configured 15 CH for data and 15 CH for voice.
Data works fine.
Voice services work fine as well, BUT!!!
- When trying to use analog modems between locations its not working
- When trying to send fax between locations, its hardly working (i.e. 1/10 success & even then copy is hardly readable).
All problems not present when I bypass routers and 2Mbs leased line with 120Ohm cable.
Any knowledge about similar problems?
Any tip for sorting this kind of problems, or this is by default behavior for such setup?

Thanks for tip, sorry for delay in reply (I was on leave).
re synchronization, it is properly synchronized (as you can see in output attached.
All other phone services/functions (standard voice calls, CallBack, CLIP etc.) and data transfer is working fine. If any problems with link sync I suppose there should be some problems with those as well.
rtr#sh controller e1 0/0
E1 0/0 is up.
Applique type is Channelized E1 - balanced
Description: Connecton to 2Mbs leased line
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20011015, FPGA: 11
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
Data in current interval (530 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 1:
! each Interval equals 900 Secs (15 min)
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 2:
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
! etc, etc. Data in Interval XX:

Slow network speed after connecting to routers and switch

Hello
The following is my test setup I have running at my house for some practice and leaning
Some reason the PC1 which is a laptop is getting very horrid internet / download speeds, and I am trying to narrow down why.
Example, on my main desktop that is connected right to the Arris Cable modem / router I get around 34Mbps down. But the laptop that is connected in the topology above, is getting 0.06 Mbps down
I am not sure if there are settings that need to be checked on the routers or what could cause this, I am figuring the traffic is bogging at some place.
Thanks

Update on some things I have tried
As I am not sure the cause, I have been reading and trying different things, last thing was to set the interfaces to Duplex Full
I did this on both the Ethernet ports on the routers, and both of the Fast Ethernet ports being used on the switch, but has not changed the speed that PC1 is getting.
Also turned on CEF on both routers

How to protect a PIM-SM network from unauthorized pim routers and multicast sources?

Hi,
we're using pim sparse mode in a customer network with catalyst 2/3/4/6K switches, all multicast routers are redundant with pim dr running for access subnets. RPs are configured with anycast rp.
A) Is there any possiblity to prevent rogue pim routers/igmp queriers connected to host ports from getting connected to the legal pim routers and from getting involved in the local igmp traffic?
Maybe like DHCP Snooping used with DHCP. I read that in the latest Sup2T ios (http://www.cisco.com/c/dam/en/us/td/docs/switches/lan/catalyst6500/ios/15-2SY/config_guide/sup2T/15_2_sy_swcg_2T.pdf) there is a feature called 'ipv4 router guard' which does exactly what we're looking for:
'When configured, the Router Guard feature makes the specified port a host port only. The port is prevented from becoming a router port, even if a multicast router control packets are received. In addition, any control packets normally received from multicast routers, such as IGMP queries and PIM joins, will also be discarded by this filter.'
Afaik, PIM authentication isn't supported in current catalyst ios versions.
Using a normal port ACL is not an option in our case because of a management decision.
B) Is there any possibility to prevent (on a per-subnet basis) rogue sources from sending multicast streams to legal multicast-groups?
Maybe, can I configure a svi of a host subnet or a host port to drop any incoming multicast stream while still accepting IGMP and sending out legal multicast streams?
Using 'ip pim accept-register' command on the rp is not an option because we've tons of legal sources which would end in an very huge error-prone acl
Unfortunately, a normal ACL is not an option here, too.
Best Regards
Thorsten

We use two pim routers in each host subnet for redundancy, they elect the PIM DR.
Does pim passive mode work here?
(Config Guide: If the ip pim passive command is configured on an interface enabled for IP multicast, the router will operate this interface in PIM passive mode, which means that the router will not send PIM messages on the interface nor will it accept PIM messages from other routers across this interface. The router will instead consider that it is the only PIM router on the network and thus act as the DR and also as the DF for all bidir-PIM group ranges. IGMP operations are unaffected by this command. ... The redundant PIM stub router topology is not supported. The redundant topology exists when there is more than one PIM router forwarding multicast traffic to a single access domain. PIM messages are blocked, and the PIM asset and designated router election mechanisms are not supported on the PIM passive interfaces.)
ip pim neighbor-filter maybe would work to prevent rogue pim routers to connect to the legal pim routers but wouldn't rogue pim routers still be able to manipulate the layer2 switch to send all igmp traffic to them and not to the legal pim routers?

Multiple routers and subnets - can't access across subnets

Hey all, I'm having an issue with multiple routers and subnets on my FIOS connection. Here's how everything is setup:
Primary router:
ActionTec MI424WR Rev D (from Verizon)
WAN IP: From ISP
WAN NETMASK: From ISP
LAN IP: 192.168.1.1LAN NETMASK: 255.255.255.0
Secondary router (WAN connected to ActionTec LAN):
Belkin N750 gigabit w/ 802.11n
WAN IP: 192.168.1.2
WAN NETMASK: 255.255.255.0
LAN IP: 192.168.2.1
LAN NETMASK: 255.255.255.0
With this setup, I have the secondary router's WAN port connected to a LAN port on the primary router. Each are broadcasting an SSID and each are running DHCP to assign address to their respective subnets. Everything was well and good, except that I could reach 192.168.1.* systems from 192.168.2.*, but not vice versa -- anything connected to the Primary router was blind to systems connected to Secondary. Also, I could not ping anything on .2 from .1.
So, I added the following static route to the primary router:
DESTINATION: 192.168.2.0
NETMASK: 255.255.255.0
GATEWAY: 192.168.1.2
Once this was added to the router, I could ping everything, so that was good. However, even though .1 can now ping .2, I can't access certain things such as the web interface of my NAS (192.168.2.2). I can ping it, but accessing it in the browser from .1 doesn't work; however, accessing from .2 does work.
I think the ActionTec router might be blocking it, but that's just a guess. The firewall on this thing has me thoroughly confused. Currently, I have 192.168.1.2 in the DMZ on the ActionTec, but that didn't make a difference. I've also completely disabled the firewall on the secondary Belkin router, but still nothing.
Any help from the pros here? Much appreciated!
Solved!
Go to Solution.

Ok, I figured it out and everything is now working. The issue appears to be that the ActionTec router doesn't recognize traffic from Subnet 1 to Subnet 2 as internal traffic -- it treats it as external traffic and closes it off. To fix this, it required some Advanced Firewall Filters that were far from unituitive and took a lot of testing to get it just right. If anyone runs into a similar situation in the future, here's a rundown of what I did to make it all work:
Primary Router:
ActionTec, MI424WR Rev D
WAN IP/NETMASK:Assigned by ISP
LAN IP/NETMASK:192.168.1.1 / 255.255.255.0
Secondary Router:
Belkin N750 Gigabit w/ 802.11n
WAN IP/NETMASK:192.168.1.2 / 255.255.255.0
LAN IP/NETMASK:192.168.2.1 / 255.255.255.0
Plug Secondary router's WAN port into a LAN port on the Primary router.
Setup Secondary router to have static LAN address (192.168.1.2)
At this point, you should have 2 separate subnets: Subnet 1 (192.168.1.*) and Subnet 2 (192.168.2.*).
Systems on both subnets should be able to reach the internet. Also, Subnet 2 should be able to ping and reach systems on Subnet 1; however, systems on Subnet 1 should not be able to ping or reach systems on Subnet 2. For this, we need to create a static route so Subnet 1 can reach Subnet 2.
Create and apply the following static route in the Primary router: (Advanced > Routing)
RULE NAME:Network (Home/Office)
DESTINATION:192.168.2.0(your secondary subnet)
GATEWAY:192.168.1.2(secondary router's WAN IP)
NETMASK:255.255.255.0
METRIC:1
The router now has a route between Subnet 1 (192.168.1.*) and Subnet 2 (192.168.2.*). You should be able to ping systems on Subnet 1 from 2, and ping systems on Subnet 2 from 1. You should not be able to access any systems, though -- the firewall is still blocking all but ping traffic from Subnet 1 to Subnet 2. We need to create some firewall rules to allow this communication.
Make sure Primary firewall is set to at least typical/medium (Firewall Settings > General).
We need to create some network objects to make it easier to manage the rules we'll create. Go to Advanced > Network Objects and do the following:
1.Click Add. You are now on Edit Network Object screen.
2.Set Description to 'Subnet 1'.
3.In Items section below, click Add.
4.Set Network Object Type to 'IP Subnet'.
5.Set Subnet IP Address to 192.168.1.0.
6.Set Subnet Mask to 255.255.255.0.
7.Click Apply. You are now back on Edit Network Object screen.
8.Click Apply. You are now back on Network Objects Screen.
9.Repeat the above steps again, but this time creating a second network object called 'Subnet 2':
Nameubnet 2
IP Subnet:192.168.2.0
Subnet Mask:255.255.255.0
Now we create the firewall rules. Go to Firewall Settings > Advanced Filtering.
In the Inbound/Input rules section, click the Add link next to Network (Home/Office) Rules.
Create the following Advanced Filter:
SOURCE ADDRESSelect 'Subnet 1'
DEST. ADDRESSelect 'Subnet 2'
PROTOCOL:'Any'
OPERATION:'Accept Packet'
OCCUR:'Always'
Click Apply. You will now be back on the Advanced Filtering page.
In the Outbound rules section, click the Add link next to Network (Home/Office) Rules.
Create the following Advanced Filter:
SOURCE ADDRESSelect 'Subnet 1'
DEST. ADDRESSelect 'Subnet 2'
PROTOCOL:'Any'
OPERATION:'Accept Packet'
OCCUR:'Always'
Click Apply. You will now be back on the Advanced Filtering page.
Click Apply.
You're all done. You should now have internet access on both subnets, be able to ping across subnets and also be able to access services across subnets (local webservers, SSH, telnet, mail, etc). You will not be able to see network file shares across subnets in Windows, however, as this requires a WINS server (which is well outside the scope of this post). For instance, I have a Western Digital NAS on the 192.168.2.0 subnet that I can access as \\Mybooklive\ from within Subnet 2; on Subnet 1, however, I have to access it by its IP \\192.168.2.10\.

The difference of the IEEE802.1x Auth between Cisco Routers and Catalyst switches

Hello
I am investigating the difference of the IEEE802.1x Auth between Routers and Switches.
Basically dot1x auth is availlable on Catalyst Switches. however if I want to check to
PortBased Multi-Auth , MAC address Auth and any certification Auth with this feature,
Is it possible to integrate into Cisco Router such as Cisco 891F ?
In my opinion Cisco891F is also available to use basic IEEE802.1x but if it compares with Catalyst switches such as Cat3560X
I think there might be any unsupported feature on Cisco 891F.
I appreciate any information. thank you very much in advance.
Best Regards,
Masanobu Hiyoshi

Many time in interviews asked comaprison between cisco routers and switches that i was answerless bcoz i dont have much knowledge about that.Can anyone provide me the compariosin sheet of the same.how are the cisco devices differ with each other how much Bandwidth each routres support and Etc...
Ummmm ... The most common question I get is "what is the difference between a router and a switch".
However, if you get a question like this, then my impression to this line of questioning are:
1. The candidate they are looking for has in-depth knowledge of routers and switches. And I mean IN-DEPTH!;
2. They are not looking for a candidate. They just want to stroke their ego. There is not alot of people who can give you the "names and numbers" of routers and switches at a snap of a finger. And if you do happen to know the answer, then and there, then expect a tougher follow-up question.

Fax and Modem with UC560

Dear All,
I have a somewhat tricky configuration to make happen and hope you can help me.
I have a UC560-BRI-K9 (located in Germany) that is connected via BRI/ISDN and also utilizes an external SIP-Trunk.
The UC is shared by two related businesses and the Trunks are separated using COR-Lists.
I am now tasked with making both Faxes and Modems work. Via the SIP-Trunk, I only need T.38 to work for inbound and outbound faxes; no problem here. On the BRI-Port however, it is quite a different story: Here, I need both Fax and Modem working. The modem functionality is required by a Power Generator to call for maintenance in case of failure (or be called on a designated number for preventive checks). Furthermore, there also is a Postage Meter that also requires outbound modem comms.
Digging through the configuration documents, I see that the UC500-Series does not support Fax-passthrough and modem-passthrough to be enabled simultaneously as they are handled similarly.
If anyone has come across a solution for my problem, please let me know.
Thank you very much in advance!
Best regards,
Colin

If you use BRI and the fax or modem is conneceted to a FXS port in the same router, you don't need to worry about anything. It will work fine without any configuration.

Fax and Modem Over IP

Is it successful and reliable to deploy the fax and modem over IP in production? Does it stable enough to replace the PSTN connection?
Do delay and packet drops in the network affect so much for fax and modem traffic?
How about to implement fax and modem over IP via microwave link?

i have read in the article in the web. here is the link
http://www.soft-switch.org/foip.html
1) Can you comment about implementing POS modem over IP is not reliable and workable.
2) What the fine tune need to do most to successfully deploy the POS over IP?
3) We had using Linksys SPA2102 ATA for the POS machine to be connected to the CUCM. Is it recommended brand ATA for impementing the POS?
4) What is your experience implementing the POS modem? To CUCM or any Media gateway or IP PABX?

Issue with Linksys Router and Modem with Vonage Device

Hello,
I have a Linksys Router and Cable Modem. Plus I have Vonage for my home phone. I have been having several problems and now, my Vonage phone will not work at all. I have cable internet and my ISP is Cox Commuication. I do not know how to connect my Vonage device with my Router and Modem. People have been giving me advice, but nothing has worked.
Does anyone know how to intergrate all three of these items together? Basically which plug goes where. Currently my phone is not working. The only thing that is in use right now is my linksys cable modem. I have the power cord plugged in, the blue cord from the modem plugged into my laptop, and the cable from the modem to the wall jack. Please help. Thank-You!
Linksys Router: WRT54G version 6
Linksys Cable Modem: BEFCMU10
Vonage (Motorola): VT2143-VD
Message Edited by preshe79 on 03-16-2008 03:56 PM
Message Edited by preshe79 on 03-16-2008 03:58 PM

The router should be online first. Can you get into the router's configuration page?
The box said windows xp or better... So I installed Linux!

I will be travelling abroad but use time machine and modem at home. Do I need to leave these switched on while away for iCloud to work?

I will be travelling abroad but use time machine and modem at home. Do I need to leave these switched on while away for iCloud to work?

No. iCloud has nothing to do with Time Machine on your computer, and as long as your computer has synched all desired content and settings to iCloud, not only does the modem not need to be switched on, your computer doesn't need to be on either.
Regards.

Cable between hub and modem

Hi I had infinity installed yesterday. The engineer installed the hub & modem in my hallway. I explained that my existing setup comprised of 3 desktop computers in the loft and two laptops. From the main bt socket in the hall a cable runs up to the first floor. The engineer said he could fit the hub and modem on the first floor which I did not want as it was in a bedroom by the door. He installed the equipment and connected a laptop using the wireless connection @ 20mb explaining that I could hardwire my desktops if I wanted a faster speed. My question is: Would it be possible to replace (extend) the red etherent cable from the hub to the modem so that I could have the hub in the loft or will I have to run 3 seperate ethernet cables from the hub in the hallway up to the loft. Any help is appraciated Thank you in advance. (sorry I posted this in the wrong form yesterday)

i also had to use a longer ethernet cable from my PC to my hub,about 10ft which i bought on the net,i can give you the web address if needed for ethernet cables.
Q. There is smoke coming out of my open reach box... so can I have a new one.
A. Sorry sir, The fault is showing at the exchange so your box should be ok.
BRING BACK UK CALL CENTRES!!!!!

For all those with D-Link routers and problems with iTunes dropping AppleTV

My setup: Custom built WinXP PC with iTunes 7.6.2. Apple TV w/Take 2. D-link DI-624 wireless N router, wired to the PC, wireless to the aTV.
I have an intersting phenomenon occuring with my Apple TV. I can sync the aTV to my PC and it works fine, but the first time we receive a phone call on our VOIP phone, the router drops the ATV connection to the PC. aTV still has internet connectivity, but iTunes on the PC cannot see the aTV, and I cannot sync.
A search yielded gobs of folks with D-link routers and iTunes/AppleTV connection issues. I just won an Airport Extreme router off ebay...as soon as I have a chance to test it out I will post back in this thread as to the results.
I know folks don't like the solution to be "spend more money", but I think it would be worth it to a lot of people if they knew a different router would solve their issues (rather than continuing to guess or throw money at the problem randomly).

I have a WinXP PC and a Linksys G class router. I am on Comcast broadband cable. Both ATV and PC are on wireless link. And I have tried a borrowed Apple Airport router (G class). That didn't help resolve this problem so far. I don't think it is a router issue as you will see that many folks on this forum have the same problem with a wide mix of environments. Many of them are on pure Apple components and so one cannot blame Microsoft and non-Apple devices.
Having said this, I hope the new router resolves your issues. In my case, the only option left is to keep calling Apple Care.

Ask the Expert: Packet Capture Capabilities of Cisco Routers and Switches

With Rahul Rammanohar
Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about packet capture capabilities of Cisco routers and switches.
In May 2013, we created a video that included packet capture capabilities across multiple Cisco routers and switches. For each product, we began with a discussion about the theory of the capabilities, followed by an explanation of the commands, and we concluded with a demo on real devices. In this Ask the Expert event, you’re encouraged to ask questions about the packet capture capabilities of these Cisco devices:
•       7600/6500: mini protocol analyzer (MPA), ELAM, and Netdr
•       ASR9k: network processor capture
•       7200/ISRs: embedded packet capture
•       Cisco Nexus 7K, 5K, and 3K: Ethanalyzer
•       Cisco Nexus 7K: ELAM
•       CRS: show captured packets
•       ASR1K: embedded packet capture
More Information
Blog URL: Packet Capture Capabilities of Cisco Routers and Switches
Watch the Video: https://supportforums.cisco.com/videos/6226
Hitesh Kumar is a customer support engineer in the High-Touch Technical Services team at Cisco specializing in routing protocols. He has been supporting major service providers and enterprise customers in routing, Multiprotocol Label Switching (MPLS), multicast, and Layer 2 VPN (L2VPN) issues on routing platforms for more than three years. He has more than six years of experience in the IT industry and holds a CCIE certification (number 38757) in service.
Rahul Rammanohar is a technical leader with the High-Touch Technical Support Team in India. He handles escalations in the area of routing protocols and large-scale architectures for devices running Cisco IOS, IOS-XR, and IOS-XE Software. He has been supporting major service providers and large enterprise customers for routing, MPLS, multicast, and L2VPN issues on all routing platforms. He has more than 13 years of experience and holds a CCIE certification (number 13015) in routing/switching and service provider.
Remember to use the rating system to let Hitesh and Rahul know if you have received an adequate response.
Because of the volume expected during this event, Hitesh and Rahul might not be able to answer each question. Remember that you can continue the conversation in the Service Provider, sub-community forum shortly after the event. This event lasts through November 1, 2013. Visit this forum often to view responses to your questions and the questions of other Cisco Support Community members.

Hello Erick
    Thanks for the topology. The trigger will be different for labelled packet as you would need to mention the values of labels too in the trigger.
     Below are two examples of one or two labels being used, it depends on where you are capturing the packet in mplsvpn scenario which will decide teh number of labels being imposed on the packet.
Trigger for one label. (if the router on which you are capturing the packet PHP is being performed)
VPN label - 5678
Source Address - 111.111.111.111
Destination Address - 123.123.123.123
show platform capture elam trigger dbus others if data = 0 0 0 0x88470162 0xE0000000 0 0 0x00006F6F 0x6F6F 7B7B 0x7B7B0000 [ 0 0 0 0xffffffff 0xf0000000 0 0 0x0000ffff 0xffffffff 0xffff0000 ]
Trigger for two labels. (for other core routers)
IGP label - 1234
VPN label - 5678
Source Address - 111.111.111.111
Destination Address - 123.123.123.123
show platform capture elam trigger dbus others if data = 0 0 0 0x8847004D 0x20000162 0xE0000000 0 0 0x00006F6F 0x6F6F7B7B 0x7B7B0000 [ 0 0 0 0xffffffff 0xf000ffff 0xf0000000 0 0 0x0000ffff 0xffffffff 0xffff0000 ]
    You can check the labels being used (by using show ip cef <> details) and covert their values to hex and change the trigger accordingly.
     I have changed the colors for better understanding. If you notice carefully in the trigger the values for ip address, labels have just been converted to their respective hex values which could be replaced.
     Please let me know if this helps.
Thanks & Regards
Hitesh & Rahul

Time and date are set incorrectly on the routers and switches

I've just noticed that the date and time on all my Cat4006's, Cat3548's and Cat6000 were grossly incorrect. I was wondering if this would contribute to problems I am having on the network. Does the switches/routers check the timestamp on the packets it's passing and/or append or add thereto?

Date and time set on routers and swithces will not affect your user data traffic.
Keeping Date and time synchronized across network devies will help if you are troubleshooting your network.
If you need to keep date and time synchronized across all the network devices, use NTP (Network Time Protocol)

Routers and modems

Similar Messages

Maybe you are looking for