Useful training for beginners. If you want to start your adventure with Huawei VRP just click on the link and enjoy!
What do we have in traditional IP networks?
Let’s assume that there is a fault at the physical or data link layers. Router sees that a physical interface becomes DOWN. After the router detects this fault, it informs upper layer routing system to update routing information. The convergence time is several seconds, what is critical for sensitive services.
That’s why IP FRR has been developed. After we configure IP FRR, a router doesn’t wait for network convergence but a backup link is immediately used to forward packets.
We have 2 scenarios of using IP FRR:
- To protect routers in public networks.
- To protect CE routers in private networks.
Let’s focus on the first one.
Some time ago I had a case with damaged file system on Huawei S5300 switch. It had been caused by power failure on one site. The switch was not able to decompress VRP software and rebooted itself all the time.
BIOS LOADING ... Copyright (c) 2008-2010 HUAWEI TECH CO., LTD. (Ver107, Jan 18 2011, 22:52:53) Press Ctrl+B to enter BOOTROM menu... 1 Auto-booting... Update Epld file ............................ None Decompressing VRP software .................. BIOS LOADING ... Copyright (c) 2008-2010 HUAWEI TECH CO., LTD. (Ver107, Jan 18 2011, 22:52:53) Press Ctrl+B to enter BOOTROM menu... 1 Auto-booting... Update Epld file ............................ None Decompressing VRP software ..................
That was to be expected. Poland is out of Euro Cup. The only thing we can do is to come back to the real world :).
Today I will show you how to use ACLs and traffic policies for packets’ lost troubleshooting in a network.
Huawei ACL and traffic policy configuration
Let’s assume that we have such topology:
What we have to do is to check end-to-end connectivity between CE and R2 Loopback100 interface, to find where packets are being lost.
24 – the default number of lines on one screen
<NE40E> display current-configuration # sysname NE40E # super password level 1 simple huawei1 super password level 3 simple huawei super password level 15 simple labnario # FTP server enable FTP acl 2000 # info-center source BFD channel 1 log level informational info-center loghost source GigabitEthernet0/0/0 info-center loghost 172.16.20.90 facility local4 # vlan batch 31 to 32 98 100 # hotkey CTRL_U "display ip interface brief" # undo cluster enable # snmp-agent trap type base-trap # load-balance ip-enhance all ---- More ----