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I'm Cisco Champion Community member for 2017!

I'm Cisco Champion Community member for 2017!
"Cisco Champions are passionate about Cisco and happy to share our knowledge, experience, and feedback."

пятница, 1 апреля 2011 г.

Do you know what...

- Default ARP entry timeout is 4 hours in IOS!
- DHCP Offer can be sent to all ones broadcast address instead of unicast address in certain situations.
- You can policy route route locally generated broadcast and multicast traffic with "ip local policy". For example this can lead to problems with dhcp server responses  to broadcast address.
- You can't use "match interface" in "ip local policy route-map"
- 255 is inaccessible administrative distance in IOS, you can use it for route filtering
- RIP doesn't generates corresponding Null0 routes for summary addresses opposit to EIGRP and OSPF. This can lead to different interesting situations like routing loops.
- You can't make as-path repend for IBGP routes
- "ip split-horizon" is disabled by default on frame-relay physical interfaces

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