Multicast Host Address

Hi everyone,
I would like to know what's the meaning of these registry entries.
Aplication Server/6.0/CCS0/GMS/KAS and Aplication
Server/6.0/CCS0/GMS/KES
Thanks in advanced

See http://java.sun.com/j2se/1.4.2/docs/guide/rmi/faq.html#standalone. In NT, 2000, XP &c you can add a loopback adapter instead of the hack described therein.
EJP

Similar Messages

Multicast mac address isn't learned, igmp-snooping

I have PIM router which connects to the cat 2960 switch and also I have host which connects to another port on the same switch. Host was joined to the IGMP group 224.1.1.1. I see that the router generates igmp-query and the host respons. IGMP-snooping process sees that process and updates appropriate entries:
2960-5#sh ip igmp snooping mrouter
Vlan ports
15 Gi2/0/32(dynamic)
2960-5#sh ip igmp snooping groups
15 224.1.1.1 igmp v2 Gi2/0/32, Gi2/0/33
But when I command "sh mac address-table multicast" I see nothing:
2960#sh mac address-table multicast
Vlan Mac Address Type Ports
What is reason of this problem?

There is the following statement from the "CCNP Practical Studies: Switching:
the process of populating the bridge table with multicast MAC addresses is based upon inspection of the destination MAC address, unlike unicast MAC addresses where the source MAC address of unicast frames is examined to generate bridge table entries.
And this book describes other parts of the mac learning process and says that after exchanging IGMP-message MAC-table must be populated by multicast mac-addresses. But later I found some Cisco and Jupiner documentation which says there is two way to perform multicast forwarding - MAC and IP. Default metod is IP multicast forwarding. When this metod is used multicast MAC-addresses isn't learnt and process of packet forwarding uses special forwarding cache which includes list of mapping IP and appropriate interfaces. It all means that this book isn't actual. All modern switchs perform multicast forwarding by IP metod and MAC-addresses don't populate CAM.

Lb/cluster 사용시 Multicast IP address 에러.. 230.0.0.1에러

* 질문한 사람 : calua
* 질문 등록일 : 2001-11-22 14:00:30
* 조회 : 48767
* 답변 : 1건 (jino2002)
-- 질문 내용 --
썬에서 로드발란서1개와 클러스터2개를 뛰어놓고 사용중인데 잘 실행되고 있다가 갑자기 에러가 발생하였습니다.
이유는 모르겠고 로드발란서를 뛰우기 위해 실행시키면 Unable connection 230.0.0.1:2.... 이라고 나오면서 실행이 안되는데요..
지금은 클러스터 설정화일인 orion-web.xml의 <cluster .... 230.....> 이부분을 주석처리해서 클러스터 하나만 뛰어놓고 있습니다.
이유가 무엇입니까? 문서에서보니 230.0.0.1이 Multicast IP address이어야 한다는 것이 있던데 이해가 잘안되네요..
-- 답변 내용 --
1. jino2002 님의 답변
아마도 이전에 실행중이던 LB가 kill 되지 않아서 생기는 에러 같습니다.
일단 kill -9 <java_pid>로 실행중인 자바 인스턴스를 kill 하고 테스트 하시는게 좋을듯 합니다.
Multicast IP Address 는,
클러스터 환경에서 인스턴스간에 세션 정보를 중계하기 위한 방법입니다. 네트웍에서 사용하는 멀티케스팅이랑 같은 개념이고, OC4J에서는 기본적으로 230.0.0.1을 사용합니다.
orion-web.xml에서
<cluster-config host="230.0.0.1" id="123" port="9127" /> 와 같이 설정하도록 문서에 나와있는데, 제 경험으로 봐서는 <cluster-config /> 와 같이 특별하게 지정하지 않아도 잘 동작하더군요.

No your Database config does use hostname/ip + port or a tns-entry pointing to the local_listener. Neither method does care for the home the listener is running from.
You will however have to take care of the entries in the clusterware, as the listener is a controlled resource. If you manually relocate it, then it will only work until next restart of crs stack.
The simplest way to switch the home is by running first netca from database home and delete the listener and then switch to grid home run netca again and create the listener.
netca will take care of registering it with crs with the correct environment settings. You will have a short period where your rac won't have a listener and therefore won't accept new connections until the new listener is up and running.
Relocating the current listener requires to modify several parameters via crsctl in the cluster registry, but allows doing this node by node without complete outage.
If you want to go that way, then create another listener from grid home and compare the settings of current listener and of the new listener. You will need to update several parameter before you can relocate it.
Run this command to show the current settings and compare it to the listener from grid home:
crsctl stat res ora.LISTENER.lsnr -p
You will need to modify serveral parameters, ACTION_SCRIPT,AGENT_FILENAME,ALIAS_NAME,ORACLE_HOME and the ACL
Modify works like this, for ACL you must use the encasing single apostrophe ' and run it as root:
crsctl modify res ora.LISTENER.lsnr -attr "ACL='owner:oracle:rwx,pgrp:oinstall:rwx,other::r--'"
I would recommend Version 1 if short outage is acceptable. For both variants verify that you can resolve all tnsnames entries in both homes.
Regards
Thomas

Force mapping to a specific MAC address a multicast IP address in ARP cache table with netsh

Hi all,
I would like to know if there is any solution (netsh option, registry entry, whatever...) to force mapping a given MAC address to a multicast IP address (224.x.y.z) in my ARP cache table.
I am doing the following:
netsh.exe interface ip add neighbors "Ethernet" "224.224.xxx.yyy"
"00-80-EE-UU-VV-WW"
But the entry in the ARP table is substitued by the calculated multicast MAC@ corresponding to my multicast IP@ :
netsh.exe interface ip show neighbors "Ethernet"
Interface 12 : Ethernet
Internet Address
Physical Address Type
224.0.0.22
01-00-5e-XX-YY-ZZ
static
224.224.yyy.zzz
01-00-5e-UU-VV-WW
static
(For information, calculation of the Multicast MAC Address is described in RFC1112§6.4 -> The MAC@ equals 01-00-5e + the last 23 digits of the multicast MAC Address)
My problem is that I'm not using an Ethernet network but an AFDX (used on Airbus A380, Boeing 787 Dreamliner, by the NASA...). This network topology is a deterministic Ethernet. The network must know accurately where each network packet is going. Thus...
the multicast MAC@ cannot be accepted and packet destinated to that MAC@ are not going anywhere.
So, I must match accurately my multicast IP@ to my MAC@ (00-80...).
It used to work with Windows XP (which was not doing any "magical" MAC@ substitution on multicast IP@), but since Windows Vista, netsh is doing the substitution described above. Is there any way to disable this substitution or force my IP
to MAC mapping in ARP table? And of course, I'm not using XP anymore ;)... but a tablet with Windows 8.1.
Thanks for any help.
Cheers,
Olivier.

Hi,
The article you pointed me to is just an explanation of what I said in my original post : "Multicast MAC Address is described in RFC1112§6.4".
But, as I said in my original post, this is true ONLY for Ethernet network. And I am NOT on an Ethernet network.
So MAC address automatic calculation for my IP address done by Windows/netsh/arp is wrong in my case. The calculation Windows is doing is correct ONLY for Ethernet network. Since I am not on Ethernet, I don't want these calculations, and I'm looking for
a solution to disable them.
So, the underlying question is : "Is Microsoft/netsh/arp able to handle other network's type than Ethernet ?"
Thanks,
Olivier Dupré.

Multiple host-addresses

How can you declare multiple host-address and/or host-range elements in tangosol-coherence-override.xml?
<coherence><cluster-config><authorized-hosts>
<host-address>dnucacheclient1.sybase.com</fhost-address>
<host-address>dnucacheclient2.sybase.com</host-address>
</authorized-hosts></cluster-config></coherence>
Error:
2006-12-15 09:28:15.511 Tangosol Coherence AE 3.2/363 (RC2) <Info> (thread=main,member=n/a): Loaded operational overrides from resource "file:/C:/dscache/tangosol-coherence-override.xml"
2006-12-15 09:28:15.527 Tangosol Coherence AE 3.2/363 (RC2) <Error> (thread=main, member=n/a): Failed to apply the element override: /tangosol-coherence-override-dev.xml; java.lang.UnsupportedOperationException: Override element is not unique:
<host-address>dnucacheclient1.sybase.com</host-address>
How can you allow separate clusters to start on the same subnet? And how do you start a separate cluster on the same subnet, if a running cluster has an authorization restriction?
Error:
2006-12-18 13:09:22.629 Tangosol Coherence DGE 3.2/363 (RC2) <Error> (thread=Cluster, member=n/a): This member is not authorized to join the cluster. Rejected by Member(Id=1, Timestamp=2006-12-18 13:08:33.279, Address=10.20.17.122:8088, MachineId=3962).
Exception in thread "main" java.lang.RuntimeException: Failed to start Service "Cluster" (ServiceState=SERVICE_STOPPED, STATE_JOINING)
at com.tangosol.coherence.component.util.daemon.queueProcessor.Service.start(Service.CDB:61)

You can try something like this,
<authorized-hosts>
<host-address id="1" system-property="tangosol.coherence.authorized.host.1"></host-address>
<host-address id="2" system-property="tangosol.coherence.authorized.host.2"></host-address>
<host-address id="3" system-property="tangosol.coherence.authorized.host.3"></host-address>
<host-address id="4" system-property="tangosol.coherence.authorized.host.4"></host-address>
<host-address id="5" system-property="tangosol.coherence.authorized.host.5"></host-address>
</authorized-hosts>
Thanks
Prabhakar

Secure way to obtain host address

I'm doing a simple RMI project that guarantees a secure communication between a server and client residing on different computers.
So, for communication, I thought of using RMISocketFactory, with an SSLSocket.
My problem resides in obtaining the host address, I don't want it hard-coded in my program.
What secure ways do I have for obtaining an host address?
Encrypt in a text file and read from it?
Regards, Nuno.

>
What secure ways do I have for obtaining an host address?
Encrypt in a text file and read from it?Yes, but only if a person has to provide the password to decrypt the file every time the program starts. Otherwise, you have to hardcode the password in the app, and if you're going to do that, you might as well just hardcode the password.
Another alternative would be to put the address in a plain text file, but make that file readable only by the user id that runs the app.
It's impossible to know whether any particular solution is viable for you however, without knowing the details of your requirements and constraints.

Any command to get IP host address in Oracle Form 6i?

Dear all,
Any command to get IP host address in Oracle Form 6i?
Best Regards,
Amy

Amy,
There is sample code on OTN that allows you to fetch client information such as the IP Address with Forms 6i. Here is the link:[Get Client Information|http://www.oracle.com/technology/sample_code/products/forms/6idemos.html]
Hope this helps.
Craig...
-- If my response or the response of another is helpful or answers your question please mark the response accordingly. Thanks!

Error in getting host address

Hi All,
I am using
final InetAddress inetAddress=InetAddress.getLocalHost();
String fHostAddress=inetAddress.getHostAddress();for getting the host address. In windows It is working fine. I am getting the proper address (10.25.23.25). but in SUSE Linux its showing
127.0.0.1, i need your help pls
regards

I assume that you do not have a public interface, or your hostname entry in your hosts file is located on the same line as your localhost entry. Or possibly that your hostname is localhost (check with 'hostname' command).

Multicast IP address keep changing on music on hold

Hi
I am trying to set up multicast for music on hold on the cucm 9.
on the cucm, I enable multicast audio sources on MOH server, using base IP 239.1.1.1, and set increment multicast on " ip address"
however the multicast IP address keep changing, sometimes its 239.1.1.1, then after a while it suddenly change to 239.1.1.2 etc..
here is the config on our srst router ( which specify the multicast ip is 239.1.1.1):
is there any way that the multicast ip do not keep changing as its affecting the MOH at the moment.
" config for MOH"
telephony-service
video
srst mode auto-provision none
srst dn template 1
srst dn line-mode dual
max-ephones 265
max-dn 600
ip source-address 10.190.0.1 port 2000
timeouts interdigit 5
system message "GlobalDial Unavailable"
cnf-file location flash:
time-zone 48
date-format dd-mm-yy
voicemail 080758831#
max-conferences 8 gain -6
moh "xmas_jazz.wav"
multicast moh 239.1.1.1 port 16384 route 192.168.1.1
transfer-system full-consult
transfer-pattern 0.T
secondary-dialtone 0
create cnf-files version-stamp 7960 Nov 27 2013 18:23:59
I was thinking to put a few more multicast IP,. but it only allow you to put one ( while the cucm set the IP address as increment)
OC-MHO-VG-SRST(config)#telephony-service
OC-MHO-VG-SRST(config-telephony)#multi
OC-MHO-VG-SRST(config-telephony)#multicast ?
moh Set IP multicast address for use with music-on-hold from flash
OC-MHO-VG-SRST(config-telephony)#multicast moh ?
A.B.C.D Define music-on-hold IP multicast address from flash
OC-MHO-VG-SRST(config-telephony)#multicast moh 239.1.1.2 ?
port Define media port for multicast moh
OC-MHO-VG-SRST(config-telephony)#multicast moh 239.1.1.2

Hi Rachel,
If the Increment Multicast on radio button is set to IP address, each MOH audio source and codec combination is multicast to different IP addresses but uses the same port number. If it is set to Port Number, each MOH audio source and codec combination is multicast to the same IP address but uses different destination port numbers.
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cusrst/admin/sccp_sip_srst/configuration/guide/SCCP_and_SIP_SRST_Admin_Guide/srst_appendix_b_.html#50022
HTH
Manish

Remote host address in Java Server Faces

how to get remote host address in JSF/Portlet application.
getFacesContext().getExternalContext().getRequest().getRemoteAddr() is not available, even header map (getRequestHeaderMap()) does not contain any data about client.

In a portletcontext the getRequest() have to be casted to PortletRequest. Then you can use getRemoteUser() on it.

Multicast mac-address Nexus 7k

Hi,
i'm going to use Nexus 7000 in Data Center.
During analysis configuration, I need define mac-address-static configuration for multicast mac address for Firewall Checkpoint cluster.
In "Layer 2 Switching Configuration Guide, Release 4.1.pdf" documentation speak about
"Configuring a Static MAC Address
[..]You cannot configure broadcast or multicast addresses as static MAC addresses[..]"
Have you a suggestion to manage this problem and why is it not possible configure mac address static multicast?
Regards
Dino

Joseph - The ClusterXL A/A configuration is a variation of the StoneSoft or Rainfinity clustering technologies that have been used to cluster Solaris and other *NIX flavored servers and firewalls for years. (In fact, StoneSoft filed suit against Check Point in Europe 8 or 9 years ago for patent violations, and lost.) These configurations were very common on Check Point clusters running on Solaris from the late 90's forward - and, as you describe, have unicast IP's with a multicast MAC for the VIP. Even from the days of installing these on the brand new (at the time) 2900 series switches you had to do exactly as you state above - static MAC entries (or in some cases port mirrors) so traffic was directed to both active switch ports. In Active/Passive mode Check Point ClusterXL clusters are almost always "plug and play" today - rarely do the switches need anything beyond speed/duplex settings. The VIP assumes the MAC of the physical NIC it is currently bound to, and therefore there are no issues as far as switch config or proxy ARP entries on the gateways. All of these issues have to do with traffic flowing to the VIP and through the firewall, and the ability of the switch to correctly identify which physical switch port(s) the VIP is currently patched in to. This is one of three types of traffic associated with ClusterXL itself. The second is state synchronization, which is accomplished through a crossover cable and therefore not relevant. Even when using a switch state sync is a typical TCP 18181 connection from a unicast IP/unicast MAC on one gateway to the other through a dedicated interface pair.
The challenge described by CJ is not with the traffic flowing to the VIP, however. It is an entirely separate process - Check Point Clustering Protocol (aka CPHA if filtering in WireShark) is essentially the heart beat traffic. Every interface pair within a Check Point cluster continually communicates with its "partner" interface on the other cluster members. If any packet takes over 100ms or shows more than a 5% loss the gateway is forced in to "probing" mode where it falls back to ICMP to determine the state of the other cluster member. Depending on the CPHA timing settings an active gateway will failover to the passive in as quickly as 500ms or so. ClusterXL will fail over the entire gateway to the standby to avoid complications with asynchronous routing.
Out of the box, CCP is configured to use multicast, but it supports broadcast as well. To change this in real time (no restart required) simply issue the command:
cphaconf set_ccp {broadcast/multicast}
At the Ethernet level, CCP traffic will always have a source MAC of the Magic MAC of 00:00:00:00:xx:yy where XX is the “Cluster ID” – something identical on each cluster member but unique from one cluster to another, and YY is the cluster priority (00, 01, etc.) based on the priority levels set on cluster members within Dashboard on the cluster object. The destination MAC will always be the Ethernet broadcast of ff:ff:ff:ff:ff:ff.
At the IP level the source of CCP will always appear as 0.0.0.0. The destination will always be the network address (ie, x.x.x.0).
Similarly in multicast mode you will see the same traffic at the IP level but at the Ethernet level the destination will now be a IPv4 multicast MAC (ie, 01:00:5e:4e:c2:1e).
In a tcpdump with the –w flag opened in WireShark and a filter applied of just “cpha” (without the quotes) you should see a continual stream of traffic with the same source and destination IPs on all packets (0.0.0.0 and network IP), the destination of either a bcast or mcast MAC and the source MAC alternating between 00:00:00:00:xx:00 and 00:00:00:00:xx:01.
Long story short, the problem CJ is describing is a behavior on the 7K where a packet capture taken on the Check Point interface itself (ie, tcpdump –i eth0 –w capture.cap) ONLY shows CPHA traffic from it’s own source MAC and no packets from it’s partner. A tcpdump on the 7K itself will show traffic from both.
As CJ mentioned, a simple NxOS upgrade will fix the issue per:
This one:CSCtl67036 basically pryer to NX-OS 5.1(3) the nexus will discard packets that have a source of 0.0.0.0. Which in broadcast mode is exactly what the CCP heartbeat is. We bypassed this one.CSCsx47620 is the bug for the for static multicast MAC address feature but it requires 5.2 code on the 7k
(NOTE:Additional RAM may be required for the 5.2 update)
Also note that Check Point gateways do support IGMP multicast groups, given that you have the correct license. It is a feature of SecurePlatform Professional on the higher end gateways or as a relatively inexpensive upgrade on the lower end boxes or open platforms. For lab purposes you can simply type “pro enable” at the CLI (without the quotes). As of the latest build there is no technical limitation (no license check) so you can enable advanced routing features as needed for testing in a lab. For step by step details on configuring IGMP on SPLAT Pro go to the Check Point support site and search for sk32702.
This can be a frustrating issue to troubleshoot, so hopefully this helps someone avoid the headaches I ran in to.

ACE How can we do a static arp to multicast mac address?

I have a architecture that uses ACE to do Firewall Load Balancing. I need to add a static map of a VIP IP to a multicast mac address (Microsoft servers with NLB in multicast mode). The ACE does not accept multicast mac address in the static arp statement, anybody knows why? Is there any other way to do that?
Regards,
Artur Pinto

Hi,
The ACE doesn't support multicast MAC addresses. This is a limitation impose by the hardware used on the boards. Syed has previously proposed a workaround at https://supportforums.cisco.com/message/464174#464174 . I don't know if that will be applicable in your case.
HTH
Cathy

Virtual Host Addressing in Oracle9iAS

Hi,
We have Oracle9iAS 9.0.2.3 installed on Windows-2000 (SP-4) OS. Both the Instances of Oracle9iAS i.e INFRA & Mid-Tier is installed on the same machine. Our applications developed in Forms/Reports9i is deployed successfully on Mid-Tier and working OK over web with URL:: http://<Host IP>:7779/<app_name>/myprog.html
[HTTP server running on Port 7779, <app_name> is application delployed in our OC4J Instance & myprog.html is first page which opens by above URL is kept in its relevant directory of deployed application]
Now, i want to create a Virtual Host Address for my application that is running by HTTP Server in Mid-Tier Instance so that above URL could be avoided and intutive name can be given for the URL. I do not wish to give IP, Port etc. in URL for opening my applicaiton deployed on Mid-Tier. I wish to open like IGFL.XEXP.COM (The relevant DNS entry is already placed in Main Domain Controller machine, which will redirect to this HOST).
I checked the documents on Metalink and followed the DocID: Note: 231351.1. I followed the steps of configuraiton without webcache setup, but this is not working properly and i am unable to trace it...Why so.?? Here, i am specifying my customized document root directory instead of AS default directory.
Can anyone give me steps how to do it or help me identifying what i am missing. People claim that it works, but i do not hv any idea and doing it for the first time. You help is needed....Expecting your response.
Regards,
Kamesh Rastogi
Indo Gulf - Jagdishpur

Sounds like you just want the URL to not have the port listed? If so, just change the listen port in the httpd.conf file or change it in Web Cache (if you are using Web Cache).
Plus, you need to register a DNS entry in your DNS server to map the IP address to a name. You don't need to do anything in 9iAS for this part.

Cannot resolve private host addresses

Hi,
I have a MacBookPro (10.5.5) in a Windows Network. After our Primary Domain Controller
was updated i get a strange error message when i want to view my network neighbourhood.
The name next to the network icon reads "cannot.resolve.private.host.addresses".
I googled but I have not found a single resource mentioning this error message.
I have access to the internet, i can access all shares in the network via command+k but i cannot
browse the network because of this error.
what is it? what is it that the mac cannot resolve? where can i look further into resolving this issue?
thnx very much
martin

Problem solved
It seems that the Mac made a reverse lookup for its own IP-Adress to get its own name.
Since the new Domain Controller did not have Reverse Lookups enabled the aforementioned problem occured.
After enabling them everything is working fine now

Cisco support of ldp host address FECs

I am wondering how I would configure my cisco 7206 for ldp host address fecs. When my cisco gets label mapping messages with prefix fecs (fec tlv type 2 as opposed to fec tlv type 3) with a prefix length of 32, it does the right thing, The label binding is added to the ldp lib and the mpls forwarding table is updated appropriately. However, when the cisco recieves a label mapping with a host address fec, it does nothing with the message. It seems to just drop it. How do I configure the cisco to do the appropriate thing with these label mappings?? Are host address fecs supported by cisco??

Host FECs are curently supported. We use an address prefix with a /32 to accomplish the same. A notification is sent to the peer issuing this type of FEC and this event should be logged locally on the receiving router as well.
Hope this helps,

Multicast Host Address

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