Enterasys Security Router X-PeditionTM User Manual page 17

Load Balancing ................................................................................................................................. 5-31
ARP Process on a VRRP Router ..................................................................................................... 5-31
Host ARP.......................................................................................................................................... 5-31
Proxy ARP ........................................................................................................................................ 5-31
Gratuitous ARP................................................................................................................................. 5-31
Traffic Process on a VRRP Router ................................................................................................... 5-31
ICMP Ping ........................................................................................................................................ 5-32
Interface Monitoring .......................................................................................................................... 5-32
Watch Group Monitoring................................................................................................................... 5-33
Physical Interface and Physical IP Address Change on a VRRP Router ......................................... 5-33
Equal-Cost Multi-Path (ECMP) .............................................................................................................. 5-34
Configuration Considerations ........................................................................................................... 5-34
Configuring RIP Examples ........................................................................................................................... 5-35
Configuring Unnumbered IP Serial Interface Example ................................................................................. 5-37
Configuring OSPF Example ......................................................................................................................... 5-37
Configuring NAT Examples .......................................................................................................................... 5-38
Basic One-to-One Static NAT ................................................................................................................ 5-38
Configuring Static Translation .......................................................................................................... 5-38
Dynamic Pool Configuration ................................................................................................................... 5-39
Configuring Dynamic Pool Translation ............................................................................................. 5-39
Network Address and Port Translation .................................................................................................. 5-40
Configuring NAPT............................................................................................................................. 5-40
Configuring NAPT............................................................................................................................. 5-41
Multiple NAT Pools within an Interface .................................................................................................. 5-41
Static NAT within an Interface ................................................................................................................ 5-42
NAT Port Forwarding ............................................................................................................................. 5-44
Configuring Policy Based Routing Example ................................................................................................. 5-44
Configuring VRRP Example ......................................................................................................................... 5-45
Router XSRa .................................................................................................................................... 5-45
Router XSRb .................................................................................................................................... 5-45
Configuring VLAN Examples ........................................................................................................................ 5-46
Chapter 6: Configuring the Border Gateway Protocol
Features ......................................................................................................................................................... 6-1
Overview ......................................................................................................................................................... 6-1
Describing BGP Messages ...................................................................................................................... 6-2
Open................................................................................................................................................... 6-2
Update ................................................................................................................................................ 6-3
Keepalive............................................................................................................................................ 6-3
Notification.......................................................................................................................................... 6-3
Defining BGP Path Attributes ................................................................................................................... 6-3
AS Path .............................................................................................................................................. 6-4
Origin .................................................................................................................................................. 6-4
Next Hop............................................................................................................................................. 6-5
Local Preference ................................................................................................................................ 6-5
Weight ................................................................................................................................................ 6-7
Atomic Aggregate ............................................................................................................................... 6-7
Aggregator.......................................................................................................................................... 6-8
Multi-Exit Discriminator ....................................................................................................................... 6-8
Community ......................................................................................................................................... 6-9
BGP Path Selection Process ................................................................................................................. 6-11
BGP Routing Policy ................................................................................................................................ 6-11
Access Control Lists ......................................................................................................................... 6-12
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