Hi All, As Nexus 7K platform doesn't support multihop BFD so i have to use faster the BGP hello and hold timers. When i try to configure BGP timers to "timers 2 6" (hold time = 6), i get a warning message as below
"% ISSU will be affected if hold time is less than system switchover time (8 seconds)" Does it means if hold time is higher than 8 seconds (e.g. timers 3 10 or timers 5 15), ISSU can be performed in future. I was in impression that if i make any change in default timers (keepalive 60sec & hold 180sec), ISSU is not longer an option. Moreover, below highlighted in red seem contrary statements. Can someone please clarify? ======================== ISSU Cisco NX-OS supports in-service software upgrades (ISSU). ISSU allows you to upgrade software without impacting forwarding. The following conditions are required to support ISSU: - Graceful restart must be enabled (default) - *Keepalive and hold timers must not be smaller than their default values* If either of these requirements is not met, Cisco NX-OS issues a warning. You can proceed with the upgrade or downgrade, but service might be disrupted. Note ------------------------------ *Cisco NX-OS cannot guarantee ISSU for non-default timer values if the negotiated hold time between BGP peers is less than the system switchover time.* Source: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/6_x/nx-os/unicast/configuration/guide/b-7k-Cisco-Nexus-7000-Series-NX-OS-Unicast-Routing-Configuration-Guide-Release-6x/n7k_unicast_config_adv_bgp.html#concept_3126984786C2406680150E527351AA2D Thanks YH _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
