OmniSwitch OS6860/OS6900/OS10K Troubleshooting Guide Part No.032996-00 Rev.A
AOS Release 7.X and 8.X January 2015
Alcatel-Lucent Page 96 of 148
ip route-pref {static |ospf | ibgp | ebgp | import} <value>
BGP - Syslog Tools
swlog appid bgp_0 subapp all enable
swlog appid bgp_0 subapp all level debug3
swlog log swlog | grep bgp | tail
Note: If using multiple vrf, log by vrf name. Replace bgp_0 with bgp_<vrf_name> .
ROUTING Troubleshooting Flow
Other issues with “routing” symptoms:
MTU mismatch, unidirectional link, duplex mismatch, link errors, L2 config errors, QOS rules, TTL setting,
mismatched subnet masks, ip helper, ip-source-filtering, port security?
Then
Redistribution configuration
Protocols not advertising a route when “intended”
Routes not redistributed when “intended”
Incorrect route filtering with prefix list / mask
“Start in the middle” approach
show ip protocols //which protocols are loaded
show ip [bgp | ospf |… //admin up, operational up
show ip route summary //adding any routes to routing table?
show ip route-pref //are “ad’s” at default?
show ip redist
show ip route-map
show ip access-list
show ip bgp policy prefix-list
show ip router database
show ip route [gateway | protocol | summary | destination]
show ip interface [<int name>]
BGP v6 additions
ipv6 bgp unicast
ipv6 redist static into bgp route-map static
ipv6 bgp network 2001:470:4979:1::/64
ipv6 bgp network 2001:470:4979:1::/64 status enable
ipv6 interface "v6if-v99" vlan 99
ipv6 address 2001:470:4979:99::1/64 "v6if-v99"
ipv6 bgp neighbor 2001:470:4979:99::24
ipv6 bgp neighbor 2001:470:4979:99::24 timers 10 30
ipv6 bgp neighbor 2001:470:4979:99::24 remote-as 2152
ipv6 bgp neighbor 2001:470:4979:99::24 activate-ipv6
ipv6 bgp neighbor 2001:470:4979:99::24 status enable
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