IBM Systems Session V29 Virtual Switch
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1. Session V29 Alan Altmark IBM z VM Development Endicott NY 2006 IBM Corporation IBM Systems Note References to IBM products programs or services do not imply that IBM intends to make these available in all countries in which IBM operates Any reference to an IBM product program or service is not intended to state or imply that only IBM s product program or service may be used Any functionally equivalent product program or service that does not infringe on any of the intellectual property rights of IBM may be used instead The evaluation and verification of operation in conjunction with other products except those expressly designed by IBM are the responsibility of the user The following terms are trademarks of the International Business Machines Corporation in the United States or other countries or both IBM IBM logo z VM Other company product and service names may be trademarks or service marks of others Copyright 2006 by International Business Machines Corporation 2 2006 IBM Corporation BM Systems Topics Routing vs Bridging What s a switch VLAN unaware migration VLAN aware migration 3 2006 IBM Corporation BM Systems Review Guest LAN vs Virtual Switch Guest LAN Virtual Switch J Ethernet LAN Virtual router is required No virtual router Different subnet Same subnet External router awareness Transparent bridge Guest ma2. CET SE Ge 2006 IBM Corporation IBM Systems Methodology 2 Use a single OSA port to carry traffic for both VM TCP IP and the Linux guests Use a VLAN aware VSWITCH Add a new router to the switch Allow VLAN tags for both subnets to flow on the OSA port 2006 IBM Corporation IBM Systems moa E En Ez mm Sg lt Fees gt Bea a ST 8 lu RI T CP SYSTEM CONFIG tron DEFINE MODIFY MODIFY MODIFY MODIFY MODIFY a Guest LAN RESTRICTED TYPE ODIO WEBNET WEBNET WEBNET WEBNET WEBNET WEBNET GRANT GRANT GRANT GRANT GRANT LINUXOOL LINUX002 LINUXO003 LINUXO04 TOPLE to a VLAN aware VSWITCH RDEV C200 VLAN 1 DEFINE MODIFY MODIFY MODIFY MODIFY MODIFY VSWITCH VSWITCH VSWITCH VSWITCH VSWITCH VSWITCH WEBNET WEBNET WEBNET WEBNET WEBNET WEBNET GRANT GRANT GRANT GRANT GRANT 202 202 202 202 LINUXOOIT VLAN LINUXOOZ VLAN LINUXUO3 VLAN LINUXOO4 VLAN TCPIP VLAN 201 The native VLAN id of the switch should match the VLAN specified on DEFINE VSWTICH 2006 IBM Corporation d d BM Systems Cisco Catalyst 6509 running CatOS While in ENABLE mode Eset vlan 202 name webnet mtu 1500 set trunk 2 7 on dotlg 1 201 202 While in CONFIG mode tinterface vlan 202 ip address 10 0 1 254 255 255 255 0 If you do not have a router function in your switch add another interface on your router
3. plug it into another port add the new port to vian 202 2006 IBM Corporation BM Systems VM TCP IP directory USER TCPIP XXXXXXXX 32M 128M ABG Virtual Switch NICDEF C200 TYPE ODIO LAN SYSTEM WEBNET 2006 IBM Corporation BM Systems VM TCP IP Profile Syntax 1s z VM 5 2 eth0 is the external OSA DEVICE ETHO OSD C200 LINK ETHO QDIOETHERNET ETHO MTU 1500 HOME 20 17 19 85 24 ETHO GATEWAY defaultnet 20 17 19 254 ETHO O 2006 IBM Corporation IBM Systems 2006 IBM Corporation BM Systems Summary Conversion is relatively easy Draw pictures There are choices Separate OSA ports each assigned to a separate VLAN Asingle OSA port that trunks multiple VLANs A combination 2006 IBM Corporation IBM Systems Thanks for Listening 2006 IBM Corporation BM Systems Contact Information By e mail Alan_Altmark us iom com In person USA 607 429 3323 On the Web http ibm com vm devpages altmarka Mailing lists IBMTCP L vm marist edu IBMVM listserv uark edu LINUX 390 vm marist edu http lom com vm techinto listserv htm 2006 IBM Corporation
4. Current Cisco 6509 Switch Configuration OSA is plugged into port 7 of slot 2 Port is defined as an access port VLAN unaware host Port is currently assigned to VLAN 201 While in ENABLE mode set vlan 201 name vlan201 mtu 1500 Eset vlan 201 2 7 While in CONFIG mode interface vlan 201 ip address 20 17 19 254 255 255 255 0 2006 IBM Corporation BM Systems CP SYSTEM CONFIG DEFINE LAN WEBNET TYPE ODIO RESTRICTED MODIFY LAN WEBNET GRANT LINUXOOQ1 MODIFY LAN WEBNET GRANT LINUX002 MODIFY LAN WEBNET GRANT LINUX003 MODIFY LAN WEBNET GRANT LINUX004 MODIFY LAN WEBNET GRANT TCPIP 2006 IBM Corporation BM Systems VM TCP IP directory USER TCPIP XXXXXXXX 32M 128M ABG Guest LAN NICDEF FOO TYPE ODIO LAN SYSTEM WEBNET x ODA DEDICATE C200 C200 DEDICATE C201 C201 DEDICATE C202 C202 2006 IBM Corporation BM Systems VM TCP IP Profile Syntax 1s z VM 5 2 eth0 is the external OSA DEVICE ETHO OSD C200 LINK ETHO ODIOETHERNET ETHO ethl 1s Guest LAN DEVICE ETH1 OSD KOU LINK ETHI ODIOETHERNET ETHI HOME 20 17 19 85 24 ETHO 10 0 1 254 24 ETH GATEWAY defaultnet 20 17 19 254 MTU 1500 MTU 1500 ETHO OU 2006 IBM Corporation IBM Systems Linux directory entry USER LINUXOO2 XXXXXXXX 128M 2048M G Guest LAN NICDEF C204 TYPE QDIO LAN SYSTEM WEBNET 2006 IBM Corporation IBM Systems Linux configuration network ifco
5. LTINUXOO4 Note that TCPIP ts not in the access list on the VSWITCH 2006 IBM Corporation IBM Systems e Lal re EE eg mem CET SE a beet TE But i want to keen TCP IP 2006 IBM Corporation IBM Systems A routed Guest LAN web web CC oi 10 0 1 254 Default gateway ferGue AN hosts TCPIP 20 17 19 85 20 17 19 85 Z VM Switch 2006 IBM Corporation IBM Systems VLAN aware switch An inside look 2006 IBM Corporation en mes Sg lt mmm eed SU E Il lo IBM Systems Trunk Port vs Access Port Access port carries traffic for a single VLAN Host not aware of VLANs Trunk port carries traffic from all VLANs Every frame is tagged with the VLAN id 2006 IBM Corporation 29 IBM Systems Physical Switch to Virtual Switch Each guest can bein Trunk port carries a different VLAN traffic between CP and switch NO i gt N LA C2 Aa EN Virtual Switch D D W O U 26 2006 IBM Corporation IBM Systems Z VM Virtual Switch VLAN aware Linux VM TCP IP VSE z OS Virtual QDIO Dan mien Virtual Switch Guest LAN IEEE 802 1q transparent bridge 2006 IBM Corporation IBM Systems Lal EE Es Eu mem em m
6. naged failover CP managed failover 4 2006 IBM Corporation IBM Systems routed Guest LAN web web web web Subnet B Virtual router to connect Guest LAN to Ethernet Often VM TCP IP OSA z VM Switch 9 2006 IBM Corporation IBM Systems A bridged Guest LAN using VSWITCH web web web web Subnet B No virtual router required Built in transparent bridge z VM Switch 6 2006 IBM Corporation Sen ge A box that creates a LAN It can be remotely configured E g Turn ports on and off Contains a built in router BM Systems Switch functions Enable and disable a port Set port type trunk or access Assign port to one or more VLANs Set port speed 10 100 1000 Auto Set port duplex mode Simplex Duplex Auto Define an internal router Define SNAP sniffer ports 8 2006 IBM Corporation IBM Systems A routed Guest LAN web web 10 0 1 254 Default gateway for Guest LAN hosts 20 17 19 85 Z VM OSA Default gateway for VSWITCH hosts 20 17 19 254 Switch 9 2006 IBM Corporation Ethernet LAN Virtual Switch Guest LAN OSA Express Virtual QDIO adapter LAN Bridge Same LAN segment and subnet VU a A le E IBM Systems II d II 2006 IBM Corporation IBM Systems
7. nfig eth0 10 0 1 5 mask 255 255 255 0 mtu 1500 route add default gw 10 0 1 254 2006 IBM Corporation IBM Systems Lal EE Es Eu mem em m CET SE Ge New Configuration 1 2006 IBM Corporation IBM Systems Methodology 1 Create a new VLAN in the Cisco switch to carry the subnet being moved Associate the OSA with the new VLAN Add a new router to the switch Delete the router from z VM Connect the VSWITCH 2006 IBM Corporation BM Systems Cisco Catalyst 6509 running CatOS While in ENABLE mode Eset vlan 202 name webnet mtu 1500 fset vlan 202 2 7 While in CONFIG mode tinterface vlan 202 ip address 10 0 1 254 255 255 255 0 If you do not have a router function in your switch add another interface on your router plug it into another port add the new port to vian 202 2006 IBM Corporation Sg bes mm mm IBM Systems CP SYSTEM CONFIG from Guest LAN DEFINE LAN WEBNET RESTRICTED TYPE ODIO MODIFY LAN WEBNET GRANT LINUXOOL MODIFY LAN WEBNET GRANT LINUX002 MODIFY LAN WEBNET GRANT LINUX003 MODIFY LAN WEBNET GRANT LINUXOO4 MODIFY LAN WEBNET GRANT TCPIP to VLAN unaware VSWITCH DEFINE VSWITCH WEBNET RDEV C200 MODIFY VSWITCH WEBNET GRANT LINUXOOL MODIFY VSWITCH WEBNET GRANT LINUX002 MODIFY VSWITCH WEBNET GRANT LINUXOO3 MODIFY VSWITCH WEBNET GRANT
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IBM Systems Session V29 Virtual Switch