Cisco Cisco ASA for Nexus 1000V Series Switch Manual Técnica
Introduction
This document describes the steps required to enable Border Gateway Protocol (BGP) (eBGP/iBGP) routing,
establish a BGP routing process, configure general BGP parameters, route−filtering on an Adaptive Security
Appliance (ASA), and troubleshoot neighborship related issues. This feature was introduced in ASA Software
Version 9.2.1.
establish a BGP routing process, configure general BGP parameters, route−filtering on an Adaptive Security
Appliance (ASA), and troubleshoot neighborship related issues. This feature was introduced in ASA Software
Version 9.2.1.
Prerequisites
Requirements
Cisco recommends that you have knowledge of these topics:
Dynamic Routing Protocols
•
The Cisco BGP Implementation
•
Basic BGP Configuration Task List
•
BGP Case Studies
•
Components Used
This document is based on Cisco ASA 5500−X Series Firewall that runs Cisco ASA Software Version 9.2.1.
The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.
Background Information
Guidelines and Limitations
The BGP IPv4 address family is supported in both single mode and multi−mode.
•
Multi−mode is equivalent to the Cisco IOS
®
BGP VPNv4 (VPN Routing and Forwarding (VRF)
address family). Per context router, BGP is similar to per VRF IPv4 address family in Cisco IOS.
•
Only one Autonomous System (AS) number is supported for all contexts similar to one global AS for
all address families in Cisco IOS.
all address families in Cisco IOS.
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The AS number should be configured with the use of the router bgp <as_num> command which can
be used in order to enable per context address family.
be used in order to enable per context address family.
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BGP has six processes that support all of the contexts, and the details are available with the show
process command. These processes are BGP Task, BGP Scheduler, BGP Scanner, BGP Router, BGP
I/O, and BGP Event.
process command. These processes are BGP Task, BGP Scheduler, BGP Scanner, BGP Router, BGP
I/O, and BGP Event.
ASA−1(config)# show proc | in BGP
Mwe 0x00000000010120d0 0x00007ffecc8ca5c8 0x0000000006136380
0 0x00007ffecc8c27c0 29432/32768 BGP Task
Mwe 0x0000000000fb3acd 0x00007ffecba47b48 0x0000000006136380
11 0x00007ffecba3fd00 31888/32768 BGP Scheduler
Lwe 0x0000000000fd3e40 0x00007ffecd3373e8 0x0000000006136380
26 0x00007ffecd32f5f0 30024/32768 BGP Scanner
Mwe 0x0000000000fd70b9 0x00007ffecd378cd8 0x0000000006136380
10 0x00007ffecd370eb0 28248/32768 BGP Router
Mwe 0x0000000000fc9f84 0x00007ffecd32f3e8 0x0000000006136380
2 0x00007ffecd3275a0 30328/32768 BGP I/O
Mwe 0x000000000100c125 0x00007ffecd33f458 0x0000000006136380
0 0x00007ffecd337640 32032/32768 BGP Event
•