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Chapter 4. ATM LAN backbone interoperability and migration 81

Figure 52. LECS General

The LECS needs a selector byte, which is generated to be 00. The LECS is

assigned the ELAN name as policy and enabled as shown in Figure 53.

Figure 53. LECS Assignment Policies

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 155 156

IBM and Cisco 1
LAN Switching 1
May 2000 3
Contents 5
Comments welcome 9
Important 11
1.1 Migration methods 12
1.1.2 Cutover migration 13
1.1.3 Overlaying network 13
Figure 3. Overlaying network 14
1.2 Network management 15
Enterprise products. See 16
2.1 Ethernet switches 17
2.1.1 Criteria for comparison 17
Self-learning IP routing 21
Table 2. IBM 8271-E12/24 22
1 LAG/ EtherChannel 23
Table 6. 8271-324 24
1 100Base-FX uplink 27
2.2 ATM switches 28
2.2.1 Criteria for comparison 29
NHRP and MPOA 32
SNA support 32
ATM Networks, SG24-5384-00 36
IBM8275-322 37
Cisco 2924XL 37
VLAN 1 VLAN 1 37
Figure 10. System Reset 41
Figure 12. Trunk Config 43
Figure 21. Port Configuration 52
Figure 22. Port Grouping 53
Figure 28. 8275-225 Main Menu 59
Figure 30. System Restart 61
Figure 40. CVSH Home Page 71
Figure 41. VLAN Configuration 72
Figure 43. VLAN Membership 74
4.1.2 The migration phase 79
Migration 80
4.1.3 Future phases 82
4.2 Interoperability testing 83
ETHERNETTOKEN-RING 84
Cisco 5500 87
Enhancements 89
ATM Configuration Examples 89
Figure 52. LECS General 91
Figure 59. Creating a LEC 97
Add to add the IP address 99
Emulation 106
ATM device 106
Figure 71. Device Interfaces 107
Protocol -> 109
MPOA/NHRP -> MPOA Client 109
4.3.3.1 Creating a VLAN 114
Figure 83. Enabling MPC 116
Figure 85. MPC status 118
Figure 86. Status of MPS 119
Figure 89 shows: 122
1 The client is enabled 122
Figure 91. MPC, List-VCCs 124
Figure 92. Ingress Cache 125
Encapsulation type TAG 127
4.3.4.4 IBM 8265 VCCs 128
2 LECS address 130
Appendix C. Special notices 139
APPN ESCON 140
IBM Nways 140
D.1 IBM Redbooks 143
D.2 IBM Redbooks collections 143
D.3 Other resources 144
D.4 Referenced Web sites 144
How to get IBM Redbooks 145
IBM Redbooks fax order form 146
IBM Redbooks review 151
IBM and Cisco LAN Switching 153

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