Jumbo frame Question
Hi Does anyone have experience on design / implementing the Jumbo frame enabled network? I am working on a project to better utilize a fiber link across east coast and west coast with the Juniper devices. Based on the default TCP windows in Linux / Windows and the latency between east coast and west coast (~80ms) and the default MTU size 1500, the maximum throughput of a single TCP session is around ~3Mbps but it is too slow for us to backing-up the huge amount of data across 2 sites. The following is the topology that we are using right now. Host A NIC (MTU 9000) <--- GigLAN ---> (MTU 9216) Juniper EX4200 (MTU 9216) <---GigLAN ---> (MTU 9018) J-6350 cluster A (MTU 9018) <--- fiber link across site ---> (MTU 9018) J-6350 cluster B (MTU 9018) <--- GigLAN ---> (MTU 9216) Juniper EX4200 (MTU 9216) <---GigLAN ---> (MTU 9000) NIC - Host B I was trying to test the connectivity from Host A to the J-6350 cluster A by using ICMP-Ping with size 8000 and DF bit set but it was failed to ping. Does anyone have experience on it? please advise. Thanks :-)
AT&T to Level 3 routing issue?
Hi, Does anyone using AT&T seeing the routing issue to Level3? We saw some issue with the end users using AT&T as a service provider having issue to our upstream provider. Thanks Tracing route to 74.220.121.100 over a maximum of 30 hops: 1 1 ms 1 ms 1 ms 9.126.177.132 2 5 ms 5 ms 3 ms 9.182.248.14 3 4 ms 3 ms 4 ms 9.182.229.20 4 6 ms 3 ms 3 ms 9.64.194.210 5 9 ms 11 ms 14 ms 9.64.194.253 6 38 ms 34 ms 40 ms 9.64.193.214 7 40 ms 35 ms 32 ms 9.64.193.179 8 32 ms 32 ms 32 ms 9.182.211.22 9 34 ms 33 ms 35 ms 9.124.118.4 10 33 ms 32 ms 33 ms 122.248.182.2 11 241 ms 169 ms 252 ms 122.248.176.50 12 32.114.248.9 reports: Destination host unreachable. NetRange: 32.0.0.0 - 32.255.255.255 CIDR: 32.0.0.0/8 OriginAS: NetName:ATT-32-0-0-0-A NetHandle: NET-32-0-0-0-1 Parent: NetType:Direct Allocation NameServer: NS.DE.PRSERV.NET NameServer: NS.UK.PRSERV.NET NameServer: NS.NL.PRSERV.NET RegDate:1990-05-30 Updated:2009-06-19 Ref:http://whois.arin.net/rest/net/NET-32-0-0-0-1 OrgName:AT&T Global Network Services, LLC OrgId: ATGS Address:3200 Lake Emma Road City: Lake Mary StateProv: FL PostalCode: 32746 Country:US RegDate: Updated:2009-05-04 Ref:http://whois.arin.net/rest/org/ATGS
AT&T routing issues at 32.114.248.9 in Middletown US
Hi, Does anyone from AT&T can contact me off the list? We experienced a routing issues at 09:07GMT to 10:18GMT. The traffics to our subnet was stopped at one the AT&T router 32.114.248.9 in Middletown US. Tracing route to 74.220.121.100 over a maximum of 30 hops: 1 1 ms 1 ms 1 ms 9.126.177.132 2 5 ms 5 ms 3 ms 9.182.248.14 3 4 ms 3 ms 4 ms 9.182.229.20 4 6 ms 3 ms 3 ms 9.64.194.210 5 9 ms 11 ms 14 ms 9.64.194.253 6 38 ms 34 ms 40 ms 9.64.193.214 7 40 ms 35 ms 32 ms 9.64.193.179 8 32 ms 32 ms 32 ms 9.182.211.22 9 34 ms 33 ms 35 ms 9.124.118.4 10 33 ms 32 ms 33 ms 122.248.182.2 11 241 ms 169 ms 252 ms 122.248.176.50 12 32.114.248.9 reports: Destination host unreachable.
Single AS Number for multiple prefixes in different country
Hi, We have an AS Number AS2 and have 2 /24 subnets belongs to this AS Number. It is using in US and peering with US Service Providers now. We are going to deploy another site in Asia, can we use the same AS Number AS2 and have 2 other /24 subnets and peering with other Asia Service Providers? Will it affect the routing or BGP Path of our existing subnets in US? Please advise. Thanks Harris :-)
Location of Akamai Edge servers in Hong Kong
Hi, Does anybody know where is the Akamai Edge servers located in Hong Kong? Which ISPs they are using? Are they peering with HKIX? Please advise. Thanks Harris
