{"id":23391,"date":"2023-03-16T15:03:30","date_gmt":"2023-03-16T14:03:30","guid":{"rendered":"https:\/\/www.dbi-services.com\/blog\/?p=23391"},"modified":"2023-03-16T15:03:31","modified_gmt":"2023-03-16T14:03:31","slug":"oda-vnetwork-bridge-with-no-ip-address","status":"publish","type":"post","link":"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/","title":{"rendered":"ODA vnetwork bridge with no IP address"},"content":{"rendered":"\n

It is not mandatory to setup an IP address on a bridge interface. A bridge forwards packets at MAC layer. But of course, if I would like to reach the DB System or the Compute Instance from the ODA, then an IP address will be needed on the bridge interface. I have demonstrate and explain this in one of my blogs : https:\/\/www.dbi-services.com\/blog\/creating-kvm-database-system-on-separate-vlan-network-on-oda\/<\/a><\/p>\n\n\n\n

I have also successfully implemented on customer with ODA running version 19.14, DB System on vnetwork bridge having no IP address. And this to totally isolate the DB System. I recently realised that last 19.17 and 19.18 ODA version will not allow this natively any more. IP address is now mandatory to be supplied. Opening a SR I could get an official WA that I would like to share in this blog.<\/p>\n\n\n\n\n\n\n\n

Trying to create a new vnetwork bridge without IP address<\/h2>\n\n\n\n

This would be totally unsuccessful as we can see in the following results.<\/p>\n\n\n\n

\n[root@dbi-oda-x8 ~]# odacli create-vnetwork -n tagged38 -if btbond2 -t bridged-vlan -vlan 38\nDCS-10045:Validation error encountered: Parameter 'vNetwork IP address' cannot be null.\n\n[root@dbi-oda-x8 ~]# odacli create-vnetwork -n tagged38 -if btbond2 -t bridged-vlan -ip 0.0.0.0 -nm 255.255.255.0 -vlan 38 -gw 10.38.0.1\nDCS-10045:Validation error encountered: The IP address 0.0.0.0 is already in use in the network.\n\n[root@dbi-oda-x8 ~]# odacli create-vnetwork -n tagged38 -if btbond2 -t bridged-vlan -ip none -vlan 38\nDCS-10045:Validation error encountered: Parameter 'vNetwork netmask' cannot be null.\n\n[root@dbi-oda-x8 ~]# odacli create-vnetwork -n tagged38 -if btbond2 -t bridged-vlan -ip none -nm none -vlan 38\nDCS-10045:Validation error encountered: Parameter 'vNetwork IP address' is not a valid IP: none.\n<\/pre>\n<\/br>\n\n\n\n
Workaround<\/h2>\n\n\n\n
To workaround this, we need to create the interface with an IP address, and then to remove it later on.<\/p>\n\n\n\n
Creating the vnetwork with bridge IP address:<\/p>\n\n\n\n
\n[root@dbi-oda-x8 ~]# odacli create-vnetwork -n tagged38 -if btbond2 -t bridged-vlan -ip 10.38.0.10 -nm 255.255.255.0 -vlan 38 -gw 10.38.0.1\n\nJob details\n----------------------------------------------------------------\n                     ID:  0f11b59f-2ebc-4122-a8e5-d8498f8123f9\n            Description:  vNetwork tagged38 creation\n                 Status:  Created\n                Created:  March 15, 2023 3:15:33 PM CET\n                Message:\n\nTask Name                                Start Time                          End Time                            Status\n---------------------------------------- ----------------------------------- ----------------------------------- ----------\n\n[root@dbi-oda-x8 ~]# odacli describe-job -i 0f11b59f-2ebc-4122-a8e5-d8498f8123f9\n\nJob details\n----------------------------------------------------------------\n                     ID:  0f11b59f-2ebc-4122-a8e5-d8498f8123f9\n            Description:  vNetwork tagged38 creation\n                 Status:  Success\n                Created:  March 15, 2023 3:15:33 PM CET\n                Message:\n\nTask Name                                Start Time                          End Time                            Status\n---------------------------------------- ----------------------------------- ----------------------------------- ----------\nValidate Virtual Network doesn't exist   March 15, 2023 3:15:33 PM CET       March 15, 2023 3:15:33 PM CET       Success\nValidate interface to use exists         March 15, 2023 3:15:33 PM CET       March 15, 2023 3:15:33 PM CET       Success\nValidate interfaces to create not exist  March 15, 2023 3:15:33 PM CET       March 15, 2023 3:15:33 PM CET       Success\nCreate bridge                            March 15, 2023 3:15:33 PM CET       March 15, 2023 3:15:33 PM CET       Success\nCreate VLAN                              March 15, 2023 3:15:33 PM CET       March 15, 2023 3:15:33 PM CET       Success\nBring up VLAN                            March 15, 2023 3:15:33 PM CET       March 15, 2023 3:15:38 PM CET       Success\nCreate metadata                          March 15, 2023 3:15:38 PM CET       March 15, 2023 3:15:38 PM CET       Success\nPersist metadata                         March 15, 2023 3:15:38 PM CET       March 15, 2023 3:15:38 PM CET       Success\n\n[root@dbi-oda-x8 ~]# odacli list-vnetworks\nName                  Type             Interface        Bridge                Uniform   Created                   Updated\n--------------------  ---------------  ---------------  --------------------  --------  ------------------------  ------------------------\ntagged38              BridgedVlan      btbond2          brtagged38            NO        2023-03-15 15:15:38 CET   2023-03-15 15:15:38 CET\npubnet                Bridged          btbond1          pubnet                NO        2022-11-03 12:06:43 CET   2022-11-03 12:06:43 CET\n\n[root@dbi-oda-x8 ~]# odacli describe-vnetwork -n tagged38\nVNetwork details\n--------------------------------------------------------------------------------\n                       ID:  1356a164-6e46-42b3-b8c8-953bc62f2e84\n                     Name:  tagged38\n                  Created:  2023-03-15 15:26:20 CET\n                  Updated:  2023-03-15 15:26:20 CET\n                     Type:  BridgedVlan\n           Interface name:  btbond2\n              Bridge name:  brtagged38\n                  VLAN ID:  38\n                       IP:  10.38.0.10\n                  Netmask:  255.255.255.0\n                  Gateway:  10.38.0.1\n Attached in VMs (config):  NONE\n   Attached in VMs (live):  NONE\n<\/pre>\n<\/br>\n\n\n\n
We can see the bridge interface has been created and have the IP address assigned on:<\/p>\n\n\n\n
\n[root@dbi-oda-x8 ~]# ip addr sh brtagged38\n25: brtagged38:  mtu 1500 qdisc noqueue state UP group default qlen 1000\n    link\/ether 52:54:00:e1:fa:51 brd ff:ff:ff:ff:ff:ff\n    inet 10.38.0.10\/24 brd 10.38.0.255 scope global brtagged38\n       valid_lft forever preferred_lft forever\n<\/pre>\n<\/br>\n\n\n\n
And I can ping it from my laptop:<\/p>\n\n\n\n
\nmaw@DBI-LT-MAW2 ~ % ping 10.38.0.10\nPING 10.38.0.10 (10.38.0.10): 56 data bytes\n64 bytes from 10.38.0.10: icmp_seq=0 ttl=62 time=39.865 ms\n64 bytes from 10.38.0.10: icmp_seq=1 ttl=62 time=130.809 ms\n64 bytes from 10.38.0.10: icmp_seq=2 ttl=62 time=46.843 ms\n^C\n--- 10.38.0.10 ping statistics ---\n3 packets transmitted, 3 packets received, 0.0% packet loss\nround-trip min\/avg\/max\/stddev = 39.865\/72.506\/130.809\/41.325 ms\n<\/pre>\n<\/br>\n\n\n\n
We will now remove the IP address from the bridge with modify-vnetwork:<\/p>\n\n\n\n
\n[root@dbi-oda-x8 ~]# odacli modify-vnetwork -n tagged38 -ip none\n\nJob details\n----------------------------------------------------------------\n                     ID:  5d60bfb8-6598-4e48-b329-cf2ad7730dc8\n            Description:  vNetwork tagged38 modification\n                 Status:  Created\n                Created:  March 15, 2023 3:22:44 PM CET\n                Message:\n\nTask Name                                Start Time                          End Time                            Status\n---------------------------------------- ----------------------------------- ----------------------------------- ----------\n\n[root@dbi-oda-x8 ~]# odacli describe-job -i 5d60bfb8-6598-4e48-b329-cf2ad7730dc8\n\nJob details\n----------------------------------------------------------------\n                     ID:  5d60bfb8-6598-4e48-b329-cf2ad7730dc8\n            Description:  vNetwork tagged38 modification\n                 Status:  Success\n                Created:  March 15, 2023 3:22:44 PM CET\n                Message:\n\nTask Name                                Start Time                          End Time                            Status\n---------------------------------------- ----------------------------------- ----------------------------------- ----------\nValidate Virtual Network exists          March 15, 2023 3:22:44 PM CET       March 15, 2023 3:22:44 PM CET       Success\nModify VLAN                              March 15, 2023 3:22:44 PM CET       March 15, 2023 3:22:44 PM CET       Success\nUpdate metadata                          March 15, 2023 3:22:44 PM CET       March 15, 2023 3:22:44 PM CET       Success\nPersist metadata                         March 15, 2023 3:22:44 PM CET       March 15, 2023 3:22:44 PM CET       Success\n<\/pre>\n<\/br>\n\n\n\n
I can see that my bridge interface has no more IP address:<\/p>\n\n\n\n
\n[root@dbi-oda-x8 ~]# ip addr sh brtagged38\n25: brtagged38:  mtu 1500 qdisc noqueue state UP group default qlen 1000\n    link\/ether 52:54:00:e1:fa:51 brd ff:ff:ff:ff:ff:ff\n<\/pre>\n<\/br>\n\n\n\n
And, of course, I can not ping it any more:<\/p>\n\n\n\n
\nmaw@DBI-LT-MAW2 ~ % ping 10.38.0.10\nPING 10.38.0.10 (10.38.0.10): 56 data bytes\nRequest timeout for icmp_seq 0\nRequest timeout for icmp_seq 1\nRequest timeout for icmp_seq 2\nRequest timeout for icmp_seq 3\n<\/pre>\n<\/br>\n\n\n\n
My vnetwork shows now a configuration without any IP configuration:<\/p>\n\n\n\n
\n[root@dbi-oda-x8 ~]# odacli describe-vnetwork -n tagged38\nVNetwork details\n--------------------------------------------------------------------------------\n                       ID:  b9cbfb0f-5c40-4421-8fd4-439872d630b3\n                     Name:  tagged38\n                  Created:  2023-03-15 15:15:38 CET\n                  Updated:  2023-03-15 15:22:44 CET\n                     Type:  BridgedVlan\n           Interface name:  btbond2\n              Bridge name:  brtagged38\n                  VLAN ID:  38\n                       IP:\n                  Netmask:\n                  Gateway:\n Attached in VMs (config):  NONE\n   Attached in VMs (live):  NONE\n<\/pre>\n<\/br>\n\n\n\n
I could even put the IP address back:<\/p>\n\n\n\n
\n[root@dbi-oda-x8 ~]# odacli modify-vnetwork -n tagged38 -ip 10.38.0.10 -nm 255.255.255.0 -gw 10.38.0.1\n\nJob details\n----------------------------------------------------------------\n                     ID:  0fe45b34-23af-4bea-a887-ff36b76acf22\n            Description:  vNetwork tagged38 modification\n                 Status:  Created\n                Created:  March 15, 2023 3:33:20 PM CET\n                Message:\n\nTask Name                                Start Time                          End Time                            Status\n---------------------------------------- ----------------------------------- ----------------------------------- ----------\n\n[root@dbi-oda-x8 ~]# odacli describe-job -i 0fe45b34-23af-4bea-a887-ff36b76acf22\n\nJob details\n----------------------------------------------------------------\n                     ID:  0fe45b34-23af-4bea-a887-ff36b76acf22\n            Description:  vNetwork tagged38 modification\n                 Status:  Success\n                Created:  March 15, 2023 3:33:20 PM CET\n                Message:\n\nTask Name                                Start Time                          End Time                            Status\n---------------------------------------- ----------------------------------- ----------------------------------- ----------\nValidate Virtual Network exists          March 15, 2023 3:33:20 PM CET       March 15, 2023 3:33:20 PM CET       Success\nModify VLAN                              March 15, 2023 3:33:20 PM CET       March 15, 2023 3:33:25 PM CET       Success\nUpdate metadata                          March 15, 2023 3:33:25 PM CET       March 15, 2023 3:33:25 PM CET       Success\nPersist metadata                         March 15, 2023 3:33:25 PM CET       March 15, 2023 3:33:25 PM CET       Success\n<\/pre>\n<\/br>\n\n\n\n
And my bridge configuration will get the IP configuration again:<\/p>\n\n\n\n
\n[root@dbi-oda-x8 ~]# odacli describe-vnetwork -n tagged38\nVNetwork details\n--------------------------------------------------------------------------------\n                       ID:  b6f174d2-6b78-4c2d-8ae7-875b1c7c9705\n                     Name:  tagged38\n                  Created:  2023-03-15 15:30:25 CET\n                  Updated:  2023-03-15 15:33:25 CET\n                     Type:  BridgedVlan\n           Interface name:  btbond2\n              Bridge name:  brtagged38\n                  VLAN ID:  38\n                       IP:  10.38.0.10\n                  Netmask:  255.255.255.0\n                  Gateway:  10.38.0.1\n Attached in VMs (config):  NONE\n   Attached in VMs (live):  NONE\n\n[root@dbi-oda-x8 ~]# ip addr sh brtagged38\n29: brtagged38:  mtu 1500 qdisc noqueue state UP group default qlen 1000\n    link\/ether 52:54:00:9e:0f:78 brd ff:ff:ff:ff:ff:ff\n    inet 10.38.0.10\/24 brd 10.38.0.255 scope global brtagged38\n       valid_lft forever preferred_lft forever\n<\/pre>\n<\/br>\n\n\n\n
To finally be able to ping it again:<\/p>\n\n\n\n
\nmaw@DBI-LT-MAW2 ~ % ping 10.38.0.10\nPING 10.38.0.10 (10.38.0.10): 56 data bytes\n64 bytes from 10.38.0.10: icmp_seq=0 ttl=62 time=47.394 ms\n64 bytes from 10.38.0.10: icmp_seq=1 ttl=62 time=46.711 ms\n64 bytes from 10.38.0.10: icmp_seq=2 ttl=62 time=47.371 ms\n<\/pre>\n<\/br>\n","protected":false},"excerpt":{"rendered":"
It is not mandatory to setup an IP address on a bridge interface. A bridge forwards packets at MAC layer. But of course, if I would like to reach the DB System or the Compute Instance from the ODA, then an IP address will be needed on the bridge interface. I have demonstrate and explain […]<\/p>\n","protected":false},"author":48,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[59],"tags":[2877,2878,2567,96,2876,2875],"type_dbi":[],"class_list":["post-23391","post","type-post","status-publish","format-standard","hentry","category-oracle","tag-bridge","tag-no-ip-address","tag-oda-2","tag-oracle","tag-virtual-network","tag-vnetwork"],"acf":[],"yoast_head":"\nODA vnetwork bridge with no IP address - dbi Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ODA vnetwork bridge with no IP address\" \/>\n<meta property=\"og:description\" content=\"It is not mandatory to setup an IP address on a bridge interface. A bridge forwards packets at MAC layer. But of course, if I would like to reach the DB System or the Compute Instance from the ODA, then an IP address will be needed on the bridge interface. I have demonstrate and explain […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/\" \/>\n<meta property=\"og:site_name\" content=\"dbi Blog\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-16T14:03:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-03-16T14:03:31+00:00\" \/>\n<meta name=\"author\" content=\"Marc Wagner\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Marc Wagner\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/\"},\"author\":{\"name\":\"Marc Wagner\",\"@id\":\"https:\/\/www.dbi-services.com\/blog\/#\/schema\/person\/225d9884b8467ead9a872823acb14628\"},\"headline\":\"ODA vnetwork bridge with no IP address\",\"datePublished\":\"2023-03-16T14:03:30+00:00\",\"dateModified\":\"2023-03-16T14:03:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/\"},\"wordCount\":288,\"commentCount\":0,\"keywords\":[\"bridge\",\"no ip address\",\"oda\",\"Oracle\",\"virtual network\",\"vnetwork\"],\"articleSection\":[\"Oracle\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/\",\"url\":\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/\",\"name\":\"ODA vnetwork bridge with no IP address - dbi Blog\",\"isPartOf\":{\"@id\":\"https:\/\/www.dbi-services.com\/blog\/#website\"},\"datePublished\":\"2023-03-16T14:03:30+00:00\",\"dateModified\":\"2023-03-16T14:03:31+00:00\",\"author\":{\"@id\":\"https:\/\/www.dbi-services.com\/blog\/#\/schema\/person\/225d9884b8467ead9a872823acb14628\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.dbi-services.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ODA vnetwork bridge with no IP address\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.dbi-services.com\/blog\/#website\",\"url\":\"https:\/\/www.dbi-services.com\/blog\/\",\"name\":\"dbi Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.dbi-services.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.dbi-services.com\/blog\/#\/schema\/person\/225d9884b8467ead9a872823acb14628\",\"name\":\"Marc Wagner\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/secure.gravatar.com\/avatar\/a873cc6e7fbdbbcbdbcaf5dbded14ad9a77b2ec2c3e03b4d724ed33d35d5f328?s=96&d=mm&r=g\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/a873cc6e7fbdbbcbdbcaf5dbded14ad9a77b2ec2c3e03b4d724ed33d35d5f328?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/a873cc6e7fbdbbcbdbcaf5dbded14ad9a77b2ec2c3e03b4d724ed33d35d5f328?s=96&d=mm&r=g\",\"caption\":\"Marc Wagner\"},\"url\":\"https:\/\/www.dbi-services.com\/blog\/author\/marc-wagner\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"ODA vnetwork bridge with no IP address - dbi Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.dbi-services.com\/blog\/oda-vnetwork-bridge-with-no-ip-address\/","og_locale":"en_US","og_type":"article","og_title":"ODA vnetwork bridge with no IP address","og_description":"It is not mandatory to setup an IP address on a bridge interface. 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