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When you need to only the change the unified ports inside an expansion slot of a Nexus 5500, you do not have to reload the entire switch to activate the unified port changes. You can simply restart only the module like this:
… Read morenx5548up-a# config t
nx5548up-a(config)# slot 2
nx5548up-a(config-slot)# port 1-16 type fc
nx5548up-a(config-slot)# end
nx5548up-a# copy run start
nx5548up-a# poweroff module 2
nx5548up-a# no poweroff module 2
Brad Hedlund‘s blog is one of my favorite sources of excellent UCS (and other general) material. I just found the exceptional UCS videos, which deserved a re-share.
In this video we take a look at the physical network architecture of Cisco UCS and incorporate the new capability of connecting both blade and rack mount servers to UCS Manager.
Here we look at how Cisco UCS virtualizes every significant component of the physical architecture; switches, cables, adapters, and servers. Then we look at how … Read more
I had a corrupted IOS image on a 3750E switch today and feared for a xmodem transfer to eat up my day, until I found that you can copy from TFTP. It’s very well hidden, but still possible. Here’s how:
When the switch has ‘booted’ without a proper IOS, you’ll be in the ‘switch: ‘ command line. In the following example, I will assume that the TFTP server has IP 192.168.0.10 and the switch will use 192.168.0.1.
Connect your TFTP server to the ethernet management port, then follow this sequence:
switch: set IP_ADDR 192.168.0.1/255.255.255.0… Read more
switch: set DEFAULT_ROUTER 192.168.0.10
switch: copy
For some reason a Cisco ME3400 doesn’t have both IPv4 and IPv6 routing enabled. Still wondering why, but this is how you enable it:
conf t sdm prefer dual-ipv4-and-ipv6 routing exit wr mem reload… Read more
If your replay window size has not been set to a number that is high enough for the number of packets received, you will receive a system message such as the following:
*Nov 17 19:27:32.279: %CRYPTO-4-PKT_REPLAY_ERR: decrypt: replay check failed connection id=xxx
To prevent this error, you can do following:
rtr(config)# crypto ipsec security-association replay window-size 1024
… Read more© 2024 Lostdomain
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