Bug 629239
| Summary: | [4u8] Bonding in ALB mode sends ARP in loop [rhel-4.8.z] | ||
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| Product: | Red Hat Enterprise Linux 4 | Reporter: | RHEL Program Management <pm-rhel> |
| Component: | kernel | Assignee: | Don Howard <dhoward> |
| Status: | CLOSED ERRATA | QA Contact: | Liang Zheng <lzheng> |
| Severity: | high | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 4.8 | CC: | agospoda, dhoward, fleitner, jwest, kzhang, lzheng, pm-eus, vgoyal |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
When two systems using bonding devices in the adaptive load balancing (ALB) mode communicated with each other, an endless loop of ARP replies started between these two systems due to a faulty MAC address update. With this update, the MAC address update no longer creates unneeded ARP replies.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2010-10-19 18:48:38 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 610236 | ||
| Bug Blocks: | |||
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Description
RHEL Program Management
2010-09-01 12:04:02 UTC
A patch for this issue has been included in kernel 2.6.9-89.0.30. Test in kernel 2.6.9-89, Steps to Reproduce: 1. config two systems both running bonding in ALB mode 2. System A ping system B,the ARP being sent each 2 seconds between them [root@hp-dl320g5-01 mnt]# tcpdump -v arp tcpdump: WARNING: eth0: no IPv4 address assigned tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 03:49:49.056184 arp reply hp-dl320g5-01.rhts.eng.bos.redhat.com is-at 00:18:71:8c:16:22 03:49:49.056384 arp reply hp-dl320g5-01.rhts.eng.bos.redhat.com is-at 00:18:71:8c:16:22 03:49:53.156023 arp reply hp-dl320g5-01.rhts.eng.bos.redhat.com is-at 00:18:71:8c:16:22 03:49:53.156026 arp reply hp-dl320g5-01.rhts.eng.bos.redhat.com is-at 00:18:71:8c:16:22 Test in kernel 2.6.9-89.31.1: There are no unneeded ARP packets. [root@dell-pem605-01 ~]# tcpdump -v arp tcpdump: WARNING: eth0: no IPv4 address assigned tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 0 packets captured An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2010-0779.html
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New Contents:
When two systems using bonding devices in the adaptive load balancing (ALB) mode communicated with each other, an endless loop of ARP replies started between these two systems due to a faulty MAC address update. With this update, the MAC address update no longer creates unneeded ARP replies.
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