Youtube won’t work on Wireless Network but works on Wired Network : networking

Hi everyone,

We are a public school and we have had this problem for a long time now. If I can provide any more details, please let me know.

Following is the topology:

ISP -> Firewall(ip: -> Core Layer3 Switch(ip:

Core Layer 3 Switch is connected to WLC(ip: and 2951 Router(ip:, serving DCHP server)

We are using Google’s DNS( and in our network and couple months ago we tried to change the DNS servers to GoGuardian’s(Filtering and Monitoring) DNS servers, but that day we have seen couple issues(like YouTube not working) so we had to revert back everything. Ever since we have had this issues even though everything is reverted back.

We can go to YouTube on wired network but not on wireless. We can ping fine on wireless but not

But can do nslookup for so DNS works fine.

BTW Ping to and on wired network shows “Redirect Network”. But remember works on wired. This “Redirect Network” does not happen on pinging on wireless network.

#nslookup on wired network

Non-authoritative answer:

>ping on wired network

PING ( 56 data bytes
64 bytes from icmp_seq=0 ttl=115 time=18.267 ms
36 bytes from Redirect Network(New addr:
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 c6f7   0 0000  40  01 394a

64 bytes from icmp_seq=1 ttl=115 time=18.607 ms
64 bytes from icmp_seq=2 ttl=115 time=18.594 ms
64 bytes from icmp_seq=3 ttl=115 time=18.532 ms
64 bytes from icmp_seq=4 ttl=115 time=18.181 ms
64 bytes from icmp_seq=5 ttl=115 time=18.726 ms
64 bytes from icmp_seq=6 ttl=115 time=18.606 ms
64 bytes from icmp_seq=7 ttl=115 time=18.201 ms
64 bytes from icmp_seq=8 ttl=115 time=18.387 ms
64 bytes from icmp_seq=9 ttl=115 time=18.608 ms
64 bytes from icmp_seq=10 ttl=115 time=18.639 ms
64 bytes from icmp_seq=11 ttl=115 time=18.536 ms
64 bytes from icmp_seq=12 ttl=115 time=18.399 ms
36 bytes from Redirect Network(New addr:
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 ba68   0 0000  40  01 45d9

64 bytes from icmp_seq=13 ttl=115 time=18.445 ms
64 bytes from icmp_seq=14 ttl=115 time=18.800 ms
64 bytes from icmp_seq=15 ttl=115 time=18.728 ms

#nslookup on wireless network

$ nslookup
Non-authoritative answer:

Ping YouTube on wireless network

$ ping
PING ( 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
Request timeout for icmp_seq 4
Request timeout for icmp_seq 5

OMG: Just did, whois and got

OrgAbuseHandle: ABUSE5250-ARIN
OrgAbuseName: Abuse OrgAbusePhone: +1-650-253-0000 OrgAbuseEmail: OrgAbuseRef:

but did whois

OrgAbuseHandle: ABUSE898-ARIN
OrgAbuseName: Abuse Department OrgAbusePhone: +1-661-554-0287 OrgAbuseEmail: OrgAbuseRef:

This ip is not even show org is Google.

Seriously lost here. Would WLC cache stuff and somehow affect us?

Some of current DHCP configs on our 2951 Router:

ip dhcp pool WIRED

ip dhcp pool WIFI
lease 7

Wireshark shows TCP traffic to	TCP	78	[TCP Retransmission] 53468 → 443 [SYN] Seq=0 Win=65535 Len=0 MSS=1460 WS=64 TSval=110210111 TSecr=0 SACK_PERM=1  TCP Analysis Flag: This frame is a(suspected) retransmission 

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