1. Configure the AW peer to send out a community number 89:89

Examples

BGP route table

Flags: >=Best route for the given prefix, *=Unreachable next hop, W=Withdrawn

m=Community, a=Aggregate route, s=Aggregate Suppressed, D=Damped Learned from: L=Local, e=eBGP Peer, i=iBGP Peer, c=Confederate

Peer

---------------------------------------------------------------------

Fl Prefix

Next hop

Origin

MED

Local pref

Path

 

 

 

 

Originator

Cluster List

 

 

 

---------------------------------------------------------------------

<SNIP>

>

64.0.0.0/4

45.45.45.45

INCOMPLETE -

100

 

SEQ 34567 11 22 33 44 55 66 77 88 99 1010 1111 1212 1313 1414 1515

 

1616;

 

 

 

e -

-

 

 

---------------------------------------------------------------------

Example G A community-list based filter dropping incoming updates based on community number

1. Configure the AW peer to send out a community number 89:89

add ip routem=com entry=1 set commmun=89:89

set bgp peer=45.45.45.45 outroutemap=com sendcommunity=yes

The routes coming from that peer has community 89:89

BGP#show ip bgp 52.0.0.0/8

BGP routing table entry for 52.0.0.0/8

Paths: (1 available, best #1, table Default-IP-Routing-Table) Not advertised to any peer

34568

45.45.45.46 from 45.45.45.46 (45.45.45.46)

Origin IGP metric 0, localpref 100, valid, external, best Community: 89:89 ----------------------------

Last update: Wed Oct 1 06:47:01 2008

1.Then, on the AlliedWare Plus switch, create a community-list that matches on some community values.

ip community-list 78 permit 55:66 ip community-list 78 permit 89:89 ip community-list 78 permit 9999:89

2.Create a prefix-list that matches the route 52.0.0.0/8 ip prefix-list test1 permit 52.0.0.0/8

3.Set the community-list to be the match criterion on a deny entry in a route map route-map com deny 1

match community 78

Use Route Maps and Other Filters to Filter and Alter BGP and OSPF Routes Page 39

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Allied Telesis X8100 Configure the AW peer to send out a community number, The routes coming from that peer has community

X8100, x908 specifications

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