On 11/12/2014 21:28, Мурат Каипов wrote:
Hello Marco.
Can you provide what type of Line Cards you use and check your Cat6500
for this restrictions:
* Cisco Catalyst 6500 series switches support up to 100 BFD sessions
with a minimum hello interval of 50 ms and a multiplier of 3. The
multiplier specifies the minimum number of consecutive packets that
can be missed before a session is declared down.
* If SSO is enabled on a dual RP system, the following limitations apply:
o The maximum number of BFD sessions supported is 50.
o The minimum hello interval is 500 ms with a multiplier of 3 or
higher.
o If EIGRP is enabled, the maximum number of BFD sessions
supported is reduced to 30.
o Echo mode is supported on Distributed Forwarding Cards (DFCs) only.
* BFD SSO is supported on Cisco Catalyst 6500 series switches using
the E-chassis and 67xx line cards only. Centralized Forwarding Cards
(CFCs) are not supported.
* To enable echo mode the system must be configured with the no ip
redirects command.
* During the In Service Software Upgrade (ISSU) cycle the line cards
are reset, causing a routing flap in the BFD session.
Hello,
Gi2/7 is on a very old line card: WS-X6724-SFP
We're not running SSO on that box and the number of session is a lot
less the 100.
Also note that C6500_1 is not able to create the BFD session on the
interface Gi2/7 even if we disable the protocol on ME3600X.
ME3600X(config)#interface GigabitEthernet0/24
ME3600X(config-if)#no bfd template bfd-core
ME3600X(config-if)#do sho bfd neig
IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
192.0.2.202 8/199 Up Up
Gi0/23
ME3600X(config-if)#
C6500_1(config-if)#no bfd interval 300 min_rx 300 multiplier 3
C6500_1(config-if)# bfd interval 300 min_rx 300 multiplier 3
Dec 12 09:17:57.360: BFD-DEBUG EVENT: bfd_session_create failed, 6
C6500_1(config-if)#
So i guess that something went wrong on that box.
Do You have any ideas?
Thank You
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