Amer.com SS3GR50i Configuration Manual page 186

CONFIGURATION GUIDE
AS1
Switch A 192.68.11.1
VLAN1
VLAN2
VLAN3
192.68.6.2
172.16.20.1
VLAN3
172.16.20.2
SwitchD VLAN2
172.16.1.1
configuration procedure: (only SwitchA is listed,configurations for other switches are omitted.)
The configuration of Layer 3 switchA:
SwitchA#config
SwitchA (config) #router bgp 1
SwitchA (config-router)#network 192.68.11.0 mask 255.255.255.0
SwitchA(config-router)#neighbor 172.16.20.2 remote-as 3
SwitchA(config-router)#neighbor 172.16.20.2 route-map AddAsNumbers out
SwitchA(config-router)#neighbor 192.68.6.1 remote-as 2
SwitchA(config-router)#exit
SwitchA(config)#route-map AddAsNumbers permit 10
SwitchA(config-route-map)#set as-path prepend 1 1
23.2.4 Troubleshooting
Faq: The routing protocol could not achieve the routing messages study under normal protocol
running state
Troubleshooting: check following errors:
Each node of route-map should at least has one node is permit match mode. When the route
map is used in routing messages filtering, the routing messages will be considered not pass the
routing messages filtering if certain routing messages does not pass the filtering of any nodes.
When all nodes are set to deny mode, all routing messages will not pass the filtering in this
route-map.
Items in address prefix list should at least have one item set to permit mode.
The deny mode items can be defined first to fast remove the unmatched routing messages,
however if all the items are set to deny mode, any route will not be able to pass the filtering of
this address prefix list. We can define a permit 0.0.0.0/0 le 32 item after several deny mode
items are defined so to permit all other routing messages pass through. Only default route will be
matched in less-equal 32 is not specified.
AS2
VLAN3
192.68.10.1
VLAN2
192.68.6.1
VLAN1
AS3 192.68.5.1
VLAN2
172.16.1.2 SwitchC
Fig 1-1
Policy routing Configuration
186
SS3GR50i/26i
SwitchB
VLAN1
192.68.5.2