Source route bridging

I need to usnderstand what role does SRB and 5500 (with no RSM) when talking to a token ring AS/400.
Does the ring number on the switch need to match the routers ring number when setting up the i.e source-bridge ring-group 100
Any helpfull hints or links to understand it better.

You use SRB to bridge SNA traffic. IP and IPX traffic from the AS/400 is not handled by SRB.
If you want to bridge/transport SNA traffic from the AS/400 to controllers in remote site via DLSw, you need to enable SRB on the router.
You need to match the ring number on the router and that on the CAT5500 (i.e. TRCRF). However, it is not the number on source-bridge ring-group needs to match. It is the first number on the source-bridge under the token ring interface.
I cannot find an exact example. The closet example is from Configuration Guide of TRISL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fibm_c/bcfpart1/bcfvlan.htm#1003141
As you are not doing TRISL, it is kind of misleading. However, the idea is similar.

Similar Messages

Source Route Bridging/ Translational Bridging

Has anyone been able to source route bridge on a router with a single token ring interface? I want to bridge traffic between token ring and ethernet. My router 2612 has only one token ring card. What are my options? We are migrating to ethernet one step at a time. Basically this router will replace a bridge. Thx

What kind of traffic requires Source Route? (SNA). What device hosts are you coming off of?
The attached shows you how to do it from a Token Ring environment to Ethernet. You need to set up your Source-bridge group and source bridge transparent statements. You need to keep in mind that in a Token Ring environment the bits are in a non-canonical format. In Ethernet they are canonical. ex. A MAc address in non-canonical form is 4000.A26A.8802 Translated to canonical form is 0200.4556.1140. This may seem clear as mudd, but it is a bit flipping process. So when you observe mac addresses in the Tomen Ring world you will see the 4000 macs and in Ethernet you will see the 0200 macs. You need to keep this in mind if you ever have to troubleshoot this.

How to enable source routing on outgoing packets?

Hi all
Perhaps some of you can help me with this. I recently read http://enclaveforensics.com/Blog/files/ … 8d9-5.html about loose source routing, and would like to do the experiment myself in an isolated network dedicated for testing purposes.
I know how to filter source routed traffic with firewalls (ip-tables), but have no idea of how to enable either loose or strict source routing in the ip-headers for those packets i'm sending out. Maybe there are some kind of setting in some configuration-file? Or are we talking the source code of an application? Kernel compilation setting? Please let me know, if you know how to do it.
And also please notice this: I've got no malicious intentions. I will only perform this in an isolated network dedicated for testing purposes. So please do not accuse me for beeing a cracker/hacker/whatever...
Thankyou

the best way to actually enable it system-wide is to use mangle table of iptables to manually enable the ipv4 options and adding the routing info with each packet, on the other hand, you can create a program with python's scapy that does LSRR and SSRR.
Last edited by Sin.citadel (2010-07-01 12:00:07)

Source Routing - Connection Manager

Hi,
I need some help understanding the following source routing function of Connection Manager. The book says:
"Source routing is used with Connection Manager. CM servers as a proxy server for Oracle Net traffic, enabling Oracle Net traffic to be routed securely though a firewall. Oracle Net treats the addresses as a list of relays, connecting to the first address that then requesting to be passed from the first to the second until the destination is reached. It differs from failover and load balancing in that all addresses are used each time a connection is made".
I do understand it is possible to configure CM in such a way that it can act as a firewall, accepting and rejecting connections based on certain criteria. What I do not understand is the second part where the addresses are treated as a list of relays. Why would something like this be necessary and how could that be configured in CM.
Any help would be greatly appreciated....
Thanks in advance.

Hi,
Oracle connection manager enables greater resource utilization for increased scalability,
multiprotocol connectivity and secure network acces control.
Example tnsnames.ora:
     CMExample.world =
     (DESCRIPTION=
     (ADDRESS_LIST=
     (ADDRESS=
     (PROTOCOL=tcp)
          (PORT=1610)
               (HOST=CM_SERVER)
     (ADDRESS=
          (PROTOCOL=tcp)
               (PORT=1521)
               (HOST=LSNR_SERVER)
(CONNECT_DATA=
          (SID=ORCL)
(SOURCE_ROUTE=yes)
Example cman.ora:
     cman = (ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=h)(PORT=1610))
(ADDRESS=(PROTOCOL=tcp)(HOST=h)(PORT=1620))
     cman_profile = (parameter_list=
(MAXIMUM_RELAYS=1024)
(LOG_LEVEL=1)
(TRACING=no)
(RELAY_STATISTICS=yes)
(SHOW_TNS_INFO=yes)
(USE_ASYNC_CALL=yes)
(AUTHENTICATION_LEVEL=1)
Configuring CM for Network Acces Control(Firewall support):
Example:
cman = (ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=h)(PORT=1610))
(ADDRESS=(PROTOCOL=tcp)(HOST=h)(PORT=1620))
cman_rules = (rule_list=
(rule=(src=spcstn)(dst=x)(srv=x)(act=accept))
"For more information Note:126079.1"

What is IP source Route ?

Please let me know what is IP source Route and why is it disable for security purpose.
Thanks in advance

Hello Nitin,
Cisco routers normally accept and process source routes. Unless a network depends on it, source routing should be disabled.
Source routing is a technique whereby the sender of a packet can specify the route that a packet should take through the network. As a packet travels through the network, each router will examine the destination IP address and choose the next hop to forward the packet to. In source routing, the "source" (i.e., the sender) makes some or all of these decisions.
Reason for disabling: Attackers can use source routing to probe the network by forcing packets into specific parts of the network. Using source routing, an attacker can collect information about a network's topology, or other information that could be useful in performing an attack. During an attack, an attacker could use source routing to direct packets to bypass existing security restrictions.
Remedy:
Use the 'no ip source-route' command to disable IP source routing on the router. Refer to your router documentation for specific instructions.
Regards,
Mohit

Source Routing and Sendmail

Hi all
This is probably not directly related to IronPort, but I'm sure you guys might be able to help.
We installed an IronPort applicane a few months ago and everything works great. Unfortunately, we forward the mails to our internal sendmail server which has to be reachable from the Internet for some legacy stuff. The sendmail box in conjunction with IronPort (smarthost) seems to enable source routing of email addresses, rendering the box an open relay.
Is there a way to drop all source routed e-mails at sendmail? Based on what I read, IronPort does drop source routed e-mails anyway.
thx
reto

You will need to disable the loose_relay_check option in Sendmail. This option turns off the default behavior of rechecking recipients using the % addressing. For example, if the recipient address is user%site@othersite, the default behavior without the loose_relay_check option is that Sendmail will check if any @othersite is an allowed relay host specified in either class R macro or the access db file. If a site is an allowed relay host, the check_rcpt ruleset strips @othersite and checks user@site for relaying. Sendmail does not recheck user@site if loose_relay_check option is set to ON.

Multiple page PDF source in Bridge CS5

[X-posted from CS Windows]
Hello,
I am using Bridge CS5 on Windows to create multiple page PDFs from source PDF and PSD files. I can create multipage PDFs from a number of single-page source files, but when a source PDF has multiple pages, only the first page of the source PDF appears in the final PDF. Bridge recognizes that the source files are multipage in the preview window (the multipage PDF appears as a single page in the preview window, which can be paged through), but it silently omits the extra pages in the final product. How do I get all the pages to show up in the final PDF?
TIA,
Michael

I have seen the answer for this in the past 8? months, but can't remember the exact details on how to get around it. If my memory serves me correctly Bridge sees the mullti page PDF as one document which causes the problems you encountered.

Best way to make a router bridge

I have a airport extreme and a Netgear N600 WNDR3400 dual band router. I would like to make one of them into a bridge so I can have ethernet ports in a back room. What is the best way or the easiest way to do this?
Is this even possible?
Thank you

It is not possible to have the AirPort Extreme in the back room connect wirelessly to the Netgear router and provide Ethernet signals at its LAN ports.
If the AirPort Extreme is in the back room, you will need to establish a wired Ethernet connection from the Netgear router to the AirPort Extreme.
Then, when the AirPort Extreme is configured in Bridge Mode, the Ethernet ports on the AirPort Extreme will be enabled.
If you need for the routers to connect wirelessly.....whether the Netgear product which would be located in the back room would do what you want is really a question for Netgear.....or someone who might happen to see this post and know the answer.

Airport Express via Wired Cable/DSL Router - Bridge?

Any advice appreciated! Just purchased Airport Express 802.11n and was looking to use it as a wireless ethernet bridge for Macbook. Network configuration is: cable modem (touchstone via comcast)-> wired ethernet cable router (linksys BEFSR41) -> airport express (AX)~> macbook. Simply plugged and played here - ethernet cable into AX and plugged into outlet. AX is showing steady green (good?)! How does the Macbook use AX to connect to internet? Shouldn't this be plug-n-play? Confused on next steps....Thanks for any help.

neocro, Welcome to the discussion area!
Configure the AX to act as a bridge (not sharing a single IP address).
Assuming that the DHCP server is enabled on the Linksys, configure the MacBook to use AirPort and DHCP to connect to the internet.

Router Bridge

Hi all,
Sorry if this has been asked before.
I'm thinking of getting BT Infinity but my current router is in the middle of the room with BTvission box, my Xbox and my suresignal connected, all the wires to the router are hidden under the carpet and behind the fake fireplace so I can'tn really have the new wires going all round the room.
Is it possible to bridge 2 HH3's so the infinitely hub can be in the corner of the room and the second hub stay where it is without the need of wires (except the power!)?
If so how do I do it? (I'm not a beginner but not advanced either! )
Solved!
Go to Solution.

Tubhead wrote:
Thanks,
Would I still get the increased speed via powerline adapters?
What make would be best to buy?
Provided your mains wiring is good, there should be no drop in speed. Look for the TP-Link PA411KIT AV500 500 Mbps Powerline Adapter - Twin Pack
They should be more than adequate.
One end will plug into the LAN port of the Openreach modem, and the other one will plug into your existing HH3 WAN port.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Set up with fios mi424wr router bridge

can I set up the new TC with a FiOS MI424WR Rev. F router. I'd like to use the TC as my rouer and have the FiOS modem/router set up as a bridge (I have TV service and phone service, and the modem is connected with coax cable).

In my case I have the TC right next to the Verizon FiOs modem/router. So, I turned off the Verizon wireless so as not to create interference. As for the configuration, I set the TC to bridged not because I'm savy with these things but because the AirPort Utility on my iPhone told me to.
@LaPastenague, I'm confused about your suggestion the guest wireless doesn't work in bridge mode, mine does.
If you are able to run an ethernet cable from your Verizon FiOs modem/router to another part of your house, that will allow you to set up your TC a distance away to give you better wifi coverage in your house. Stone walls prevent me from doing this. If I need better coverage, I will buy the $99 AirPort Express and set it up in bridge mode working wirelessly from the TC.
I hope this helps.
Richard Ellis

Router Bridge Issue

Another user asked me why routers need to be bridged. I did not have an intelligent answer. It is my understanding that 'bridge mode' nullifies the feature of the router. Guidance sought

#1 They can do that.
I point to
http://www.dslreports.com/faq/13600
#2 Do thet have to: No, but there will be issues.
If you are the original poster (OP) and your issue is solved, please remember to click the "Solution?" button so that others can more easily find it. If anyone has been helpful to you, please show your appreciation by clicking the "Kudos" button.

Time Capsule and Linksys router bridging two networks

I have set up a Time Capsule on a small business network and have made use of its dual wifi to set up guest access to the internet separate from our private network. It defaults to IP address 192.168.1.1 which conflicts with a computer that must be assigned that address so I have given it the IP address 192.168.0.1. I was hoping to bridge between the 192.168.0.x and 192.168.1.x networks using a Linksys BEFSR41 router. I have been able to get internet access from the 192.168.1.x network and port forward to our Windows e-mail server but can't get individual computers to see each other from one network to the other.
Can I set the Time Capsule IP to anything other than x.x.x.1 or alternately use it or another router to bridge two different networks?

Ethernet speed on your local network is determined by the slowest connected device which most likely will be the LinkSys router or your computer.

Source route calls

Hi, I have to questions.
1. I have a 3845 gateway with 2 ISDN PRA(E1) trunks. Is it possible to route the out-bound calls out of a particualar PRA based on the calling number? How can I achieve this?
2. For inbound calls, if a destination is not available, an 'error message' is sent back to ISDN provider. Can I over-write this with a 'busy' signal? This is for the provider to send the call to another location.
Thanks in advance.

1. yes, see: http://www.cisco.com/en/US/tech/tk652/tk90/technologies_configuration_example09186a00801c0a88.shtml
2. should be possible with configuration of voice-class and causecode, but I've never personally done that.
Hope this helps, please rate post if it does!

AX as a ADSL router & bridge - would this work?

I actually use a wired (ethernet) bound ADSL router, and an AXn wireless station, connected to the wired network, which includes an ethernet enabled laser printer and an MacMini used as a backup machine.
I would like to replace the ADSL router by another AXn, which would use its ethernet port as a WAN port and be connected as a remote WDS base to the existing AXn.
Basically this would look like this
Internet (WAN) <---> AXn (new) <........> AX (existing <----> wired ethernet network
1. Is this feasible?
2. How should I configure the wireless side of the new AX connected to the WAN ?
Thx in advance

2. How should I configure the wireless side of the new AX connected to the WAN ?
The new AXn's Ethernet port will need to be connected to your ADSL modem by Ethernet cable. If your ISP requires PPPoE credentials (username/password) in order to access their service, you would need to configure the AXn with these credentials through the AirPort Utility.

Source route bridging

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